H*****l
发帖数: 702 | 1 申请的时候被所谓的blooming吸引过来，放弃传统的device physics的方向
现在发现，基本没有什么大公司做，都是小公司，工作环境就那样，payment也不高
其实blooming什么和我们fresh phd一点关系都没有。。。。
只有能start up company的人才能挣钱
而且solar cell结构简单，就是玩一个pn junction...
我是做silicon 的
虽然问这个问题很俗。。。但是，唉。。。。 |
c*******l
发帖数: 4801 | 2 你当然不能只学这个！！
而且有几个人真的学什么出去就做什么的？？？
【在 H*****l 的大作中提到】
: 申请的时候被所谓的blooming吸引过来，放弃传统的device physics的方向
: 现在发现，基本没有什么大公司做，都是小公司，工作环境就那样，payment也不高
: 其实blooming什么和我们fresh phd一点关系都没有。。。。
: 只有能start up company的人才能挣钱
: 而且solar cell结构简单，就是玩一个pn junction...
: 我是做silicon 的
: 虽然问这个问题很俗。。。但是，唉。。。。
|
H*****l
发帖数: 702 | 3 but as PhD,my area is silicon solar cell
of course,i could take classes out of this area
but who will care classes taken by a PhD |
H*****l
发帖数: 702 | |
H*****l
发帖数: 702 | 5 i got it
but my research topic would be silion solar cell... 4 year silicon solar
cell...
i donot know in other Univ.,will PhD switch his research during 4 or 5 years
...... i am thinking my skills (like ideas, fab operation) are limited in a
very narrow and traditional area...
if comparing Nano groups, they are playing much much advanced facilities..
for me PECVD is enough. All my work is find a low temp. fast process on
PECVD....
I really do not know my way.
I think IC is for smart people,i ha |
c*******l
发帖数: 4801 | 6 agree.
phd will train for how to solve problems systematically....
that's very useful |
c*******l
发帖数: 4801 | 7 change your way of thinking
you should develop ability to solve problems systematically rather than
sticking to one specific area
years
a
【在 H*****l 的大作中提到】
: i got it
: but my research topic would be silion solar cell... 4 year silicon solar
: cell...
: i donot know in other Univ.,will PhD switch his research during 4 or 5 years
: ...... i am thinking my skills (like ideas, fab operation) are limited in a
: very narrow and traditional area...
: if comparing Nano groups, they are playing much much advanced facilities..
: for me PECVD is enough. All my work is find a low temp. fast process on
: PECVD....
: I really do not know my way.
|
j***j
发帖数: 324 | 8 传统的device 能好多少？？
【在 H*****l 的大作中提到】
: 申请的时候被所谓的blooming吸引过来，放弃传统的device physics的方向
: 现在发现，基本没有什么大公司做，都是小公司，工作环境就那样，payment也不高
: 其实blooming什么和我们fresh phd一点关系都没有。。。。
: 只有能start up company的人才能挣钱
: 而且solar cell结构简单，就是玩一个pn junction...
: 我是做silicon 的
: 虽然问这个问题很俗。。。但是，唉。。。。
|
H*****l
发帖数: 702 | 9 能做ultra short gate MOSFET 显然好了。。。。
没智商作ic design的飘过。。。。唉。。。
【在 j***j 的大作中提到】
: 传统的device 能好多少？？
|
j***j
发帖数: 324 | 10 每个方向都有hot的＆一般的，
device转design的也不少，
我觉得这个方向还行，起码回国能忽悠不少人。
【在 H*****l 的大作中提到】
: 能做ultra short gate MOSFET 显然好了。。。。
: 没智商作ic design的飘过。。。。唉。。。
|
|
|
H*****l
发帖数: 702 | 11 huyou....
现在发现 solid state electronics3大shits(sorry,说重了），就是solar cell,
display( esp.flexible) and LED
low cost industry=== payment for each engineer is lower...since payment
itself is one kind of cost...
啥东西台湾日本做好，啥就挂了。。
可能是说重了，不过这几个我都有同学在不错的学校和group做
大家都觉得终极王道还是老实做classical semiconductor: ultra short gate mosfet
...
hehe,可是不是每个人都够牛而且有命去做的。。。。
发牢骚。。。。
【在 j***j 的大作中提到】
: 每个方向都有hot的＆一般的，
: device转design的也不少，
: 我觉得这个方向还行，起码回国能忽悠不少人。
|
S****d
发帖数: 298 | 12 难道当下最领先的deep submicron mosfet是等闲之辈做得好的吗？
mosfet
【在 H*****l 的大作中提到】
: huyou....
: 现在发现 solid state electronics3大shits(sorry,说重了），就是solar cell,
: display( esp.flexible) and LED
: low cost industry=== payment for each engineer is lower...since payment
: itself is one kind of cost...
: 啥东西台湾日本做好，啥就挂了。。
: 可能是说重了，不过这几个我都有同学在不错的学校和group做
: 大家都觉得终极王道还是老实做classical semiconductor: ultra short gate mosfet
: ...
: hehe,可是不是每个人都够牛而且有命去做的。。。。
|
c*******l
发帖数: 4801 | 13 我告诉你个终极王道，那就是不要做device了
做device基本轮不到任何个人startup机会
还是改做电路。如果你够聪明，电路的变化如此多，足够你折腾了
mosfet
【在 H*****l 的大作中提到】
: huyou....
: 现在发现 solid state electronics3大shits(sorry,说重了），就是solar cell,
: display( esp.flexible) and LED
: low cost industry=== payment for each engineer is lower...since payment
: itself is one kind of cost...
: 啥东西台湾日本做好，啥就挂了。。
: 可能是说重了，不过这几个我都有同学在不错的学校和group做
: 大家都觉得终极王道还是老实做classical semiconductor: ultra short gate mosfet
: ...
: hehe,可是不是每个人都够牛而且有命去做的。。。。
|
r*****i
发帖数: 70 | 14 solar cell is a perfect place for device people to start up
【在 c*******l 的大作中提到】
: 我告诉你个终极王道，那就是不要做device了
: 做device基本轮不到任何个人startup机会
: 还是改做电路。如果你够聪明，电路的变化如此多，足够你折腾了
:
: mosfet
|
L****a
发帖数: 572 | 15 Most of the large solar cell company no longer do significant R&D,
especially
silicon based. Are you doing thin-film or traditional bulk-silicon ?
for bulk-silicon : did you try SunPower, Evergeen Solar ? they are middle-size
companies in CA
for thin-film : did you try Philips, ECD, Applied Matereial ? ECD is not
a big company but also not small, but doing a-Si thin-film solar. Applied
materiel is doing a-Si thin-film solar equipment. They may have position
since it's still in development.
【在 H*****l 的大作中提到】
: 申请的时候被所谓的blooming吸引过来，放弃传统的device physics的方向
: 现在发现，基本没有什么大公司做，都是小公司，工作环境就那样，payment也不高
: 其实blooming什么和我们fresh phd一点关系都没有。。。。
: 只有能start up company的人才能挣钱
: 而且solar cell结构简单，就是玩一个pn junction...
: 我是做silicon 的
: 虽然问这个问题很俗。。。但是，唉。。。。
|
H*****l
发帖数: 702 | 16 luckily,i am in my second year...not hurry for job hunting
we have cooperation with Sunpower
badly, i am sometimes lost when i am waitting for CVD process
thin film...you mean epi growth on Low quality sub?
or a-si?
GE and BP right now are shrinking their solar research
it seems big company does not think solar cell is a promising green source,
esp. silicon
size
【在 L****a 的大作中提到】
: Most of the large solar cell company no longer do significant R&D,
: especially
: silicon based. Are you doing thin-film or traditional bulk-silicon ?
: for bulk-silicon : did you try SunPower, Evergeen Solar ? they are middle-size
: companies in CA
: for thin-film : did you try Philips, ECD, Applied Matereial ? ECD is not
: a big company but also not small, but doing a-Si thin-film solar. Applied
: materiel is doing a-Si thin-film solar equipment. They may have position
: since it's still in development.
|
L****a
发帖数: 572 | 17 I mean a-Si. For silicon-based thin film, I only see a-Si based thin film
products, others may be still in the lab.
GE and BP's concern may be reasonable, because there are already many
players, and only a few of countries are suited for solar energy. Besides,
solar solar pannel usually lasts 15-25 years, so product replacement cycle
is very long.
【在 H*****l 的大作中提到】
: luckily,i am in my second year...not hurry for job hunting
: we have cooperation with Sunpower
: badly, i am sometimes lost when i am waitting for CVD process
: thin film...you mean epi growth on Low quality sub?
: or a-si?
: GE and BP right now are shrinking their solar research
: it seems big company does not think solar cell is a promising green source,
: esp. silicon
:
: size
|
H*****l
发帖数: 702 | 18 already many players?
i am shocked....
【在 L****a 的大作中提到】
: I mean a-Si. For silicon-based thin film, I only see a-Si based thin film
: products, others may be still in the lab.
: GE and BP's concern may be reasonable, because there are already many
: players, and only a few of countries are suited for solar energy. Besides,
: solar solar pannel usually lasts 15-25 years, so product replacement cycle
: is very long.
|
a*******c
发帖数: 48 | 19 很激动，竟然有人讨论俺的专业。俺也贡献一些消息把。
有没有包子阿？？
My PhD was basic on a-Si solar cells.Actually a-Si solar cell is already in
production now.Company already made money by selling a-Si solar pannels.
It has more advantage comparing pure c-Si.
GE and BP are not big players at all in solar cell industry.
United Solar is the best industry in a-Si solar cells.
First solar is also very good at CdSe/CdTe solar cells.
AMT only works on tandem cells.And they do not have good R&D group.
It is very promising to stay in s
【在 L****a 的大作中提到】
: I mean a-Si. For silicon-based thin film, I only see a-Si based thin film
: products, others may be still in the lab.
: GE and BP's concern may be reasonable, because there are already many
: players, and only a few of countries are suited for solar energy. Besides,
: solar solar pannel usually lasts 15-25 years, so product replacement cycle
: is very long.
|
H*****l
发帖数: 702 | 20 包子？
我搓，才来MITBBS，不知道什么是包子。。。
i agree with you
it is very strange, not many solar cell companies have good R&D groups
my research realm is silicon heterojunction solar cell(not mid-bandgap part
in a tandem cell but a-si/c-si solar cell) and.... play with new device
structure and fast process
i knew United Solar/First Solar/Sunpower......
but there are very limited vacancies in their R&D groups.
And i noticed that many solar guys finally jumped back to traditional
semiconductor area after 1or 2 ye
【在 a*******c 的大作中提到】
: 很激动，竟然有人讨论俺的专业。俺也贡献一些消息把。
: 有没有包子阿？？
: My PhD was basic on a-Si solar cells.Actually a-Si solar cell is already in
: production now.Company already made money by selling a-Si solar pannels.
: It has more advantage comparing pure c-Si.
: GE and BP are not big players at all in solar cell industry.
: United Solar is the best industry in a-Si solar cells.
: First solar is also very good at CdSe/CdTe solar cells.
: AMT only works on tandem cells.And they do not have good R&D group.
: It is very promising to stay in s
|
|
|
H*****l
发帖数: 702 | 21 what does " it is very promising to stay in solar cell after serveral years"
mean?
after serveral years work experience?
after serveral years that solar grows bigger?
i am very conservative in tech...
in
【在 a*******c 的大作中提到】
: 很激动，竟然有人讨论俺的专业。俺也贡献一些消息把。
: 有没有包子阿？？
: My PhD was basic on a-Si solar cells.Actually a-Si solar cell is already in
: production now.Company already made money by selling a-Si solar pannels.
: It has more advantage comparing pure c-Si.
: GE and BP are not big players at all in solar cell industry.
: United Solar is the best industry in a-Si solar cells.
: First solar is also very good at CdSe/CdTe solar cells.
: AMT only works on tandem cells.And they do not have good R&D group.
: It is very promising to stay in s
|
a*******c
发帖数: 48 | 22 aSi/ncSi is very popular now.Many groups are working on that.
I do not know too much about First solar ,because they are working on
CdSe/CdTe.And they did not tell anything about their technique. But I heard
they are good.
Sunpower are working on c-Si,and it is still a start up company.
United solar is the best until now in silicon industry.They have very
strong R&D group,but only hire citizen.
I do not know any one transfer from solar cells to traditional devices.I
only know that
lot
【在 H*****l 的大作中提到】
: 包子？
: 我搓，才来MITBBS，不知道什么是包子。。。
: i agree with you
: it is very strange, not many solar cell companies have good R&D groups
: my research realm is silicon heterojunction solar cell(not mid-bandgap part
: in a tandem cell but a-si/c-si solar cell) and.... play with new device
: structure and fast process
: i knew United Solar/First Solar/Sunpower......
: but there are very limited vacancies in their R&D groups.
: And i noticed that many solar guys finally jumped back to traditional
|
L****a
发帖数: 572 | 23 Indeed, it's a very exicing area and industry.
Yes, united solar is the best company in the a-Si thin-film area,
because the founder of ECD, which acquired united solar a few years back,
is the pioneer of a-Si material. At this moment, United solar is the only
company who can make triple-junction a-Si thinfilm solar cell on stainless
steel substrate.
First solar is currently the only player in CdSe/CdTe, nobody else can
make CdTe thin-film solar in large scale. The process technology is First
so
【在 a*******c 的大作中提到】
: 很激动，竟然有人讨论俺的专业。俺也贡献一些消息把。
: 有没有包子阿？？
: My PhD was basic on a-Si solar cells.Actually a-Si solar cell is already in
: production now.Company already made money by selling a-Si solar pannels.
: It has more advantage comparing pure c-Si.
: GE and BP are not big players at all in solar cell industry.
: United Solar is the best industry in a-Si solar cells.
: First solar is also very good at CdSe/CdTe solar cells.
: AMT only works on tandem cells.And they do not have good R&D group.
: It is very promising to stay in s
|
L****a
发帖数: 572 | 24 can you elaborate what are the main research directions in a-Si/ncSi area?
Prodcuts are already there, why people are interested in its research now?
The fundamental limitation of a-Si thin film is its convresion efficiency is
very low. I believe this problem would't be solved in the future.
heard
【在 a*******c 的大作中提到】
: aSi/ncSi is very popular now.Many groups are working on that.
: I do not know too much about First solar ,because they are working on
: CdSe/CdTe.And they did not tell anything about their technique. But I heard
: they are good.
: Sunpower are working on c-Si,and it is still a start up company.
: United solar is the best until now in silicon industry.They have very
: strong R&D group,but only hire citizen.
: I do not know any one transfer from solar cells to traditional devices.I
: only know that
: lot
|
L****a
发帖数: 572 | 25 Yes, sure. Just see how many products there. Thin-film area may
be a bit better. But whether or not it's able to compete with
bulk silicon solar cells remains a big problem.
I would say your concern is right. Those solar-cell company
once finish R&D, they wouldn't like to invest in significant
R&D further. I guess that's why you coun't find too many
positions in big companies ba.
【在 H*****l 的大作中提到】
: already many players?
: i am shocked....
|
H*****l
发帖数: 702 | 26 i could
a-si/c-si is junction interface----silicon heterojunction solar cell
a-si brings you high Ef difference, passivation on surface ( so no need on
diffusion) and still reasonable light transport
a-si is low temp process so no need to go to 800 for diffusion or anealing
and a-si dep is very fast since it is only 10-20 nm for a-si emitter/
passivator
the interest lies on " how to make efficiency from 200 degree process as
high as traditional 800-1000 degree process"
is
【在 L****a 的大作中提到】
: can you elaborate what are the main research directions in a-Si/ncSi area?
: Prodcuts are already there, why people are interested in its research now?
: The fundamental limitation of a-Si thin film is its convresion efficiency is
: very low. I believe this problem would't be solved in the future.
:
: heard
|
a*******c
发帖数: 48 | 27 Exactly.In United Solar,they at least work on this triple juntion 10 years
agon until they got profit recently.They have the highest efficiency as
triple junction.Their R&D group is very strong.
First Solar can reach at least 10% on CdSe/CdTe in production.They are the
best in this solar cells.And they did not talk at all.
AMT is not R&D company.They are making PECVD system,so I do not think they
are so focus on efficiency. But they still have pretty high efficiency on
their tandem cells in lar
【在 L****a 的大作中提到】
: Indeed, it's a very exicing area and industry.
: Yes, united solar is the best company in the a-Si thin-film area,
: because the founder of ECD, which acquired united solar a few years back,
: is the pioneer of a-Si material. At this moment, United solar is the only
: company who can make triple-junction a-Si thinfilm solar cell on stainless
: steel substrate.
: First solar is currently the only player in CdSe/CdTe, nobody else can
: make CdTe thin-film solar in large scale. The process technology is First
: so
|
H*****l
发帖数: 702 | 28 “I do not know any one transfer from solar cells to traditional devices.I
only know that
lots of guys transfer from traditional device to solar cells.” |
a*******c
发帖数: 48 | 29 It is a very good question.I also want to know what is the future on aSi
solar cells.And since I just graduated,so I can not tell what is the right
direction in aSi-ncSi area.
Again,United solar has reached very high efficiency by making aSi/ncSi/ncSi
if I remember correctly.Also,there are some groups try to dig out some other
silicon alloy to improve effiency.
The fundamental problem of a-Si is SW effect.It has not been solved after
thirty years when it was discovered.I also do not think there
【在 L****a 的大作中提到】
: can you elaborate what are the main research directions in a-Si/ncSi area?
: Prodcuts are already there, why people are interested in its research now?
: The fundamental limitation of a-Si thin film is its convresion efficiency is
: very low. I believe this problem would't be solved in the future.
:
: heard
|
a*******c
发帖数: 48 | 30
hehe,I do not know.I just know many guys try to transfer to this area.
also
in
I am not familar with NSF and DAPRA. Most of the funding I knew are from
DOE.And DOE cut 30% this year.Maybe it does not cut solar parts.
Anyway, it is very nice that we can discuss it here.Hopfully more people
can join in our discussion~~
【在 H*****l 的大作中提到】
: “I do not know any one transfer from solar cells to traditional devices.I
: only know that
: lots of guys transfer from traditional device to solar cells.”
|
|
|
H*****l
发帖数: 702 | 31 that is a-si silicon solar cell( traditioanl so-called thin film solar cell)
right now a new area is growing epi on MGS or other low quality substrate...
some of my friends demonstrate 13% derived from 15um epi on 500um MGS (in
other words, dead) substrate.
the a-si/c-si i talked here is HIT solar cell...
ncSi
other
【在 a*******c 的大作中提到】
:
: hehe,I do not know.I just know many guys try to transfer to this area.
: also
: in
: I am not familar with NSF and DAPRA. Most of the funding I knew are from
: DOE.And DOE cut 30% this year.Maybe it does not cut solar parts.
: Anyway, it is very nice that we can discuss it here.Hopfully more people
: can join in our discussion~~
|
r*********e
发帖数: 281 | 32 别提darpa
他家几乎入不敷出了
回国发展吧
向施同学学习
【在 a*******c 的大作中提到】
:
: hehe,I do not know.I just know many guys try to transfer to this area.
: also
: in
: I am not familar with NSF and DAPRA. Most of the funding I knew are from
: DOE.And DOE cut 30% this year.Maybe it does not cut solar parts.
: Anyway, it is very nice that we can discuss it here.Hopfully more people
: can join in our discussion~~
|
H*****l
发帖数: 702 | 33 学习 ZR Shi and JH Zhao 10年post doc?
【在 r*********e 的大作中提到】
: 别提darpa
: 他家几乎入不敷出了
: 回国发展吧
: 向施同学学习
|
r*********e
发帖数: 281 | 34 年轻人,总要走点弯路才能修成正果吧
【在 H*****l 的大作中提到】
: 学习 ZR Shi and JH Zhao 10年post doc?
|
S****d
发帖数: 298 | 35 Who is JH Zhao?
【在 H*****l 的大作中提到】
: 学习 ZR Shi and JH Zhao 10年post doc?
|
H*****l
发帖数: 702 | 36 Jian hua Zhao
【在 S****d 的大作中提到】
: Who is JH Zhao?
|
L****a
发帖数: 572 | 37 为什么 startup 就不好呢. 我不知道 device 公司 的规则.
一般 startup 都会给 stock options 吧. 如果公司上市了,
或卖了就可以发一笔. 我觉得目前的形势对 solar startup
非常的有利, 也许你应该抓住这个机会.
【在 H*****l 的大作中提到】
: 申请的时候被所谓的blooming吸引过来，放弃传统的device physics的方向
: 现在发现，基本没有什么大公司做，都是小公司，工作环境就那样，payment也不高
: 其实blooming什么和我们fresh phd一点关系都没有。。。。
: 只有能start up company的人才能挣钱
: 而且solar cell结构简单，就是玩一个pn junction...
: 我是做silicon 的
: 虽然问这个问题很俗。。。但是，唉。。。。
|
c******n
发帖数: 49 | 38 虽然startup都会给stock option,你查查startup最后能上市的百分比，你就知道大部
分的stock option都是废纸。
【在 L****a 的大作中提到】
: 为什么 startup 就不好呢. 我不知道 device 公司 的规则.
: 一般 startup 都会给 stock options 吧. 如果公司上市了,
: 或卖了就可以发一笔. 我觉得目前的形势对 solar startup
: 非常的有利, 也许你应该抓住这个机会.
|
H*****l
发帖数: 702 | 39 you are bloody right
i never think of joining a startup company...
i noticed that some CEO CTO of startup companies were PhD graduated at 2006
,even 2007..that is it....
horrible...
【在 c******n 的大作中提到】
: 虽然startup都会给stock option,你查查startup最后能上市的百分比，你就知道大部
: 分的stock option都是废纸。
|
j********1
发帖数: 628 | 40 现在job market情形应该不错吧。尤其是thin film方面的。
thin film solar 里发展最快的CdTe,first solar 已经把效率做到14%了（两周前san
diego PVSC keynote speech by first solar),一般bulk silicon solar cell 不过15
% 左右，而且成本低得惊人，三年后的产品都已经卖光了，一直在招人。ava solar也
做CdTe，马上也要大规模生产了，据说成本比first solar 还要低。
a-Si和micromorph Si方面，AMAT在做设备，把它在半导体和LCD方面的经验移植过来，
据说它sunfab已经卖掉好几台了。我知道有好多人从半导体公司跳到solar公司（有不
少是被迫的，因为被layoff).
cigs和dssc也有公司宣布开始工业生产（比如nanosolar),但偶不看好这两个技术。
把实验室里的技术放大到工厂里的流水线上，有大量的process engineering的工作要
做，只在大学实验室里做研究不跟工业界接触，体会不到的（就象欧以前一样）。现在
这方
【在 H*****l 的大作中提到】
: 申请的时候被所谓的blooming吸引过来，放弃传统的device physics的方向
: 现在发现，基本没有什么大公司做，都是小公司，工作环境就那样，payment也不高
: 其实blooming什么和我们fresh phd一点关系都没有。。。。
: 只有能start up company的人才能挣钱
: 而且solar cell结构简单，就是玩一个pn junction...
: 我是做silicon 的
: 虽然问这个问题很俗。。。但是，唉。。。。
|
|
|
L****a
发帖数: 572 | 41 15% ?? several months ago, First solar's efficiency was still 11%.
In fact, bulk silicon can achieve effiency way higher than 15% depending on
it's monocrystalline or multicrystalline silicon.
You are right that process engineering is very important. When people say
they achieve 30% 45% or whatever in the lab, never believe that. Nobody
know what it will happen in the large scale production.
san
15
【在 j********1 的大作中提到】
: 现在job market情形应该不错吧。尤其是thin film方面的。
: thin film solar 里发展最快的CdTe,first solar 已经把效率做到14%了（两周前san
: diego PVSC keynote speech by first solar),一般bulk silicon solar cell 不过15
: % 左右，而且成本低得惊人，三年后的产品都已经卖光了，一直在招人。ava solar也
: 做CdTe，马上也要大规模生产了，据说成本比first solar 还要低。
: a-Si和micromorph Si方面，AMAT在做设备，把它在半导体和LCD方面的经验移植过来，
: 据说它sunfab已经卖掉好几台了。我知道有好多人从半导体公司跳到solar公司（有不
: 少是被迫的，因为被layoff).
: cigs和dssc也有公司宣布开始工业生产（比如nanosolar),但偶不看好这两个技术。
: 把实验室里的技术放大到工厂里的流水线上，有大量的process engineering的工作要
|
H*****l
发帖数: 702 | 42 In 33 PVSC,First solar demo 15%
In May issue of Progressive in Photo, CIGS cell reaches 19.9% in lab
while in single crystal silicon solar cell...
Sanyo mass production efficiency is 21%
Sunpower is 22%
That is much near to the upper limitation of state of art silicon solar cell
under one sun illumination...while silicon in itself is just not suitable
for concentrated illumiation....
on
【在 L****a 的大作中提到】
: 15% ?? several months ago, First solar's efficiency was still 11%.
: In fact, bulk silicon can achieve effiency way higher than 15% depending on
: it's monocrystalline or multicrystalline silicon.
: You are right that process engineering is very important. When people say
: they achieve 30% 45% or whatever in the lab, never believe that. Nobody
: know what it will happen in the large scale production.
:
: san
: 15
|
H*****l
发帖数: 702 | 43 heared that unit price for gasoline would go dwon to 50 bucks in five years.
...
orz...
solar cell sucks again~
on
【在 L****a 的大作中提到】
: 15% ?? several months ago, First solar's efficiency was still 11%.
: In fact, bulk silicon can achieve effiency way higher than 15% depending on
: it's monocrystalline or multicrystalline silicon.
: You are right that process engineering is very important. When people say
: they achieve 30% 45% or whatever in the lab, never believe that. Nobody
: know what it will happen in the large scale production.
:
: san
: 15
|
s******e
发帖数: 4 | 44 最近国内上了很多太阳能大项目，都是看某Shi眼馋的
另外各位谈的都是米国的情况，但太阳能的市场不是主要在欧洲么
我在国内，说法是德国薄膜cell做的最好，不知道有没有人清楚那边的情况 |
f*****7
发帖数: 4 | 45 刚要跳solar cell这个坑
ls好像有人说不看好CIGS，能给个更清楚的解释不？
现在还在犹豫是跳silicon还是跳CIGS。。。
大家给比较比较 |
p******h
发帖数: 577 | 46 not promising as far as I know.
【在 H*****l 的大作中提到】
: 申请的时候被所谓的blooming吸引过来，放弃传统的device physics的方向
: 现在发现，基本没有什么大公司做，都是小公司，工作环境就那样，payment也不高
: 其实blooming什么和我们fresh phd一点关系都没有。。。。
: 只有能start up company的人才能挣钱
: 而且solar cell结构简单，就是玩一个pn junction...
: 我是做silicon 的
: 虽然问这个问题很俗。。。但是，唉。。。。
|
H*****l
发帖数: 702 | 47 go CIGS...
【在 f*****7 的大作中提到】
: 刚要跳solar cell这个坑
: ls好像有人说不看好CIGS，能给个更清楚的解释不？
: 现在还在犹豫是跳silicon还是跳CIGS。。。
: 大家给比较比较
|
d*******l
发帖数: 2567 | 48 怎么没人探讨其它技术，如，DSSC，GaAs。
DSSC 效率可到13%，成本也低,不过稳定性需提高。
GaAs成本高，但是可以用于multi-sun,multi-junction,效率>35%. |
c********g
发帖数: 26 | 49 Quantum dot solar cell 如何？
【在 d*******l 的大作中提到】
: 怎么没人探讨其它技术，如，DSSC，GaAs。
: DSSC 效率可到13%，成本也低,不过稳定性需提高。
: GaAs成本高，但是可以用于multi-sun,multi-junction,效率>35%.
|
j********1
发帖数: 628 | 50 四个元素搞在一起，要控制stoichiometry,crystallinity,morphology,无论是vapor
phase还是solution process生长，要有reproducibility，在实验室里都不容易做到。
工业化high throughput生产，藕觉得很难。
【在 f*****7 的大作中提到】
: 刚要跳solar cell这个坑
: ls好像有人说不看好CIGS，能给个更清楚的解释不？
: 现在还在犹豫是跳silicon还是跳CIGS。。。
: 大家给比较比较
|
|
|
s****e
发帖数: 86 | 51 我听下来为什么你们几个不共同开个STARTUP?
【在 j********1 的大作中提到】
: 四个元素搞在一起，要控制stoichiometry,crystallinity,morphology,无论是vapor
: phase还是solution process生长，要有reproducibility，在实验室里都不容易做到。
: 工业化high throughput生产，藕觉得很难。
|
H*****l
发帖数: 702 | 52 suck
【在 c********g 的大作中提到】
: Quantum dot solar cell 如何？
|
H*****l
发帖数: 702 | 53 因为现在startup的门槛越来越高
solar cell的难度不在于efficiecny破纪录，而在于如何用现在1/5的成本作一个20%的
cell,还要至少把这个技术转移到100cm2的pioneer line的 量产上
nano solar那种连个产房都没，拿着blueprint就敢去套风投，还能把钱搞来的时代结
束了。。。。
现在风投都会找那些退休的老头子去厂子里评估，没有量产能量是没钱给你的。。。。
平时看到到的真神，现在在startup都能看到。。。
advent solar，我很看好，也开始裁员了，他们的EWT似乎无法在pioneer line 上demo
剩下sunpower的smartsolar,不得不承认,stanford的这票人，确实牛x
量产22.4%
【在 s****e 的大作中提到】
: 我听下来为什么你们几个不共同开个STARTUP?
|
L****a
发帖数: 572 | 54 too many CIGS solar companies failed. just some examples :
DayStar : a few years back, tryed to put CIGS solar on plastic substrate,
it failed, so now focused on CIGS on glasses substrate. But
still haven't seen one piece of solar cell from their plants.
Ascent solar : have been working on CIGS on plastic substrates for many
years, currently even hasn't worked out a 1.5MW pilot production line. Now
it keeps burning investors' money.
Nano solar : probably the biggest boaster i
【在 f*****7 的大作中提到】
: 刚要跳solar cell这个坑
: ls好像有人说不看好CIGS，能给个更清楚的解释不？
: 现在还在犹豫是跳silicon还是跳CIGS。。。
: 大家给比较比较
|
H*****l
发帖数: 702 | 55 受不了了，感觉solar cell phd出来就是死翘
今天摊牌，MS毕业
老板养到年底毕业。。。
唉。。想想本科的时候多幼稚 |
t****9
发帖数: 4594 | 56 不错啊
能养你到年底毕业
【在 H*****l 的大作中提到】
: 受不了了，感觉solar cell phd出来就是死翘
: 今天摊牌，MS毕业
: 老板养到年底毕业。。。
: 唉。。想想本科的时候多幼稚
|
H*****l
发帖数: 702 | 57 2 年前如果选择去UVa做low power VLSI可能又是两样
当然可能会rise up和现在不同的问题
but solar的形势确实。。。
西班牙经济危机，第一个拿来开刀的就是solar
solar 股票狂跌到渣。。。
西班牙是第二大市场阿。。。。
没有信心读下去了。。。
【在 t****9 的大作中提到】
: 不错啊
: 能养你到年底毕业
|
t****9
发帖数: 4594 | 58 我意思是你老板不错
【在 H*****l 的大作中提到】
: 2 年前如果选择去UVa做low power VLSI可能又是两样
: 当然可能会rise up和现在不同的问题
: but solar的形势确实。。。
: 西班牙经济危机，第一个拿来开刀的就是solar
: solar 股票狂跌到渣。。。
: 西班牙是第二大市场阿。。。。
: 没有信心读下去了。。。
|
H*****l
发帖数: 702 | 59 我知道，我当然有这自知之明。。。。
不过是哀叹一句
以前还觉得start up很好，见识了够多VC和maagement board的斗争，在start up的师
兄钱多而累，stock option也不是立马可以变成购买力的
现在小心谨慎的操作自己的stock option,随时有挂的危险。。。。
【在 t****9 的大作中提到】
: 我意思是你老板不错
|
H*****l
发帖数: 702 | 60 depends...
如果CEO碰巧是学霸，而且direct 政府研究的时候，就不一样了
又或者，management 上面有太上皇。。。。
不过大家到要给CFO面子，大家都可以欺负CTO。。。赫赫 |
|
|
O*y
发帖数: 317 | 61 养到年底..不错了...hehe
【在 H*****l 的大作中提到】
: 受不了了，感觉solar cell phd出来就是死翘
: 今天摊牌，MS毕业
: 老板养到年底毕业。。。
: 唉。。想想本科的时候多幼稚
|
O*y
发帖数: 317 | 62 不过这个solar cell,俺不懂哈..
就是上课的时候，看到有人做这方面的的presentation,就是关于怎么长啊，怎么改进.
..很多都是material science和chemistry engineering的东东...是这样的不？请教..
. |
a*******i
发帖数: 11664 | 63 if you have a greencard, go III-V solar cell.
【在 d*******l 的大作中提到】
: 怎么没人探讨其它技术，如，DSSC，GaAs。
: DSSC 效率可到13%，成本也低,不过稳定性需提高。
: GaAs成本高，但是可以用于multi-sun,multi-junction,效率>35%.
|
a*******i
发帖数: 11664 | 64 淡定，淡定...
靠solar cell拿个Ph.D也挺好的，我ibm实习的时候，device group的tech lead就是做
Si solar cell出身的。如果你以
后想转cmos industry (even thought I don't think it is a good choice)，多学点
device physics就好了。
如果能转IC design是不错的，不知道你们那里好不好转。
【在 H*****l 的大作中提到】
: 受不了了，感觉solar cell phd出来就是死翘
: 今天摊牌，MS毕业
: 老板养到年底毕业。。。
: 唉。。想想本科的时候多幼稚
|
a*******i
发帖数: 11664 | 65 现在就是拼成本
进.
..
【在 O*y 的大作中提到】
: 不过这个solar cell,俺不懂哈..
: 就是上课的时候，看到有人做这方面的的presentation,就是关于怎么长啊，怎么改进.
: ..很多都是material science和chemistry engineering的东东...是这样的不？请教..
: .
|
H*****l
发帖数: 702 | 66 我想你是牛校出生拉，所以看法就不一样啦
我想那个tech lead可能是 UCB或者stanford 的曾经的silicon solar cell group出来的
比如Dr. Richard Swanson的学生
比如Dr.Alan L. Fahrenbruch /Dr. Richard H.Bube的学生
cmos industry不是好choice?
我现在就像回traditional coms industry呢。。。赫赫
对ic design没啥想法
【在 a*******i 的大作中提到】
: 淡定，淡定...
: 靠solar cell拿个Ph.D也挺好的，我ibm实习的时候，device group的tech lead就是做
: Si solar cell出身的。如果你以
: 后想转cmos industry (even thought I don't think it is a good choice)，多学点
: device physics就好了。
: 如果能转IC design是不错的，不知道你们那里好不好转。
|
a*******i
发帖数: 11664 | 67 我是ee烂校，排名30，40开外了，嘿嘿。
我说的那个人是git出来的，的确是名师名校。
cmos industry还能做今年，但是感觉越往后咱们这种device engineer或者process
engineer就越来越不重要
了。你从现在的趋势也能看出来，大家都要搞多核，横向扩展，当然有很多原因，一个
重要因素就是size往下
shrink不动了，从65nm到45nm还不难，但是到32nm就很难了，到22nm或者更小就非常难
了，而且这个东西
是有极限的。我感觉push到10几纳米就了不起了，以后的就是看怎么做connection，发
挥多核的优势。到那时候
就靠ic design, circuit level的了。真正还需要多少device/process engineering都
很难说。在si industry扎根越
深，越难往外跳啊。
不过这都我猜测，谁知道今后10年会是怎么样。
如果想读ph.d，还是安心继续吧。如果你都3，4年纪了，再换方向太不值了。
来的
【在 H*****l 的大作中提到】
: 我想你是牛校出生拉，所以看法就不一样啦
: 我想那个tech lead可能是 UCB或者stanford 的曾经的silicon solar cell group出来的
: 比如Dr. Richard Swanson的学生
: 比如Dr.Alan L. Fahrenbruch /Dr. Richard H.Bube的学生
: cmos industry不是好choice?
: 我现在就像回traditional coms industry呢。。。赫赫
: 对ic design没啥想法
|
O*y
发帖数: 317 | |
O*y
发帖数: 317 | 69 现在学校里的research都集中在什么方向啊？做这方面的研究需要很强大的材料和物理
背景?
【在 a*******i 的大作中提到】
: 我是ee烂校，排名30，40开外了，嘿嘿。
: 我说的那个人是git出来的，的确是名师名校。
: cmos industry还能做今年，但是感觉越往后咱们这种device engineer或者process
: engineer就越来越不重要
: 了。你从现在的趋势也能看出来，大家都要搞多核，横向扩展，当然有很多原因，一个
: 重要因素就是size往下
: shrink不动了，从65nm到45nm还不难，但是到32nm就很难了，到22nm或者更小就非常难
: 了，而且这个东西
: 是有极限的。我感觉push到10几纳米就了不起了，以后的就是看怎么做connection，发
: 挥多核的优势。到那时候
|
S****d
发帖数: 298 | 70 Semiconductor research usually requires the knowledge of materials and
physics, isn't it?
【在 O*y 的大作中提到】
: 现在学校里的research都集中在什么方向啊？做这方面的研究需要很强大的材料和物理
: 背景?
|
|
|
N**D
发帖数: 37 | 71 你这样说法已经提了很多年了，CMOS还不是到了现在，而且还能继续下去。至少Intel
是保持乐观的。除了单纯的scaling down,现在还有别的option来提高device
performance,比如strain silicon, Si-Ge, FinFET, multi-gate MOSFET, nanowire
MOSFET, even III-V on Si...这些都是可能的出路。现在还没有集中力量做，是因为
还没有到那一步，planar CMOS scaling down 还能继续。除了CMOS logic, memory 也
是一个很大的产业，而且由于memory本身的特点，相比于logic CMOS, 其device比较多
样，也有更多的创新，比如 innovative silicon 的single transistor DRAM,3-D
memory, phase change memory(当然，这不是基于CMOS)...总之，会有新的技术，新的
应用，新的产品出现，让这个行当继续下去。个人觉得，在solid state electronics
这个范围内，
【在 a*******i 的大作中提到】
: 我是ee烂校，排名30，40开外了，嘿嘿。
: 我说的那个人是git出来的，的确是名师名校。
: cmos industry还能做今年，但是感觉越往后咱们这种device engineer或者process
: engineer就越来越不重要
: 了。你从现在的趋势也能看出来，大家都要搞多核，横向扩展，当然有很多原因，一个
: 重要因素就是size往下
: shrink不动了，从65nm到45nm还不难，但是到32nm就很难了，到22nm或者更小就非常难
: 了，而且这个东西
: 是有极限的。我感觉push到10几纳米就了不起了，以后的就是看怎么做connection，发
: 挥多核的优势。到那时候
|
H*****l
发帖数: 702 | 72 赫赫
今天和人吃饭的时候狠狠的调侃了一下自己
说solar cell之于EE方向就像生物之于理科方向
【在 a*******i 的大作中提到】
: 我是ee烂校，排名30，40开外了，嘿嘿。
: 我说的那个人是git出来的，的确是名师名校。
: cmos industry还能做今年，但是感觉越往后咱们这种device engineer或者process
: engineer就越来越不重要
: 了。你从现在的趋势也能看出来，大家都要搞多核，横向扩展，当然有很多原因，一个
: 重要因素就是size往下
: shrink不动了，从65nm到45nm还不难，但是到32nm就很难了，到22nm或者更小就非常难
: 了，而且这个东西
: 是有极限的。我感觉push到10几纳米就了不起了，以后的就是看怎么做connection，发
: 挥多核的优势。到那时候
|
