Please anyone let me know whether I can use a III-V semiconductor material and/or their alloy composition e.g. AlxGa1-xAs, GaAs, GaN etc. as a window or buffer layer material in a CIGS, CdTe, or CZTS absorber based thin film solar cell or not?
Yes. There are lot of examples available in the literature.
Poortmans, Jef, and Vladimir Arkhipov, eds. Thin film solar cells: fabrication, characterization and applications. Vol. 5. John Wiley & Sons, 2006
http://onlinelibrary.wiley.com/doi/10.1002/pip.715/full
http://iopscience.iop.org/article/10.1088/0268-1242/17/8/305/meta
http://onlinelibrary.wiley.com/doi/10.1002/pssc.200564172/full
I think you did not get the point. Let say I want to use AlxGa1-xAs as a buffer layer in CIGS solar cell. Is it possible?
Dear Md
I think you must know the structure, electrical and optical properties for this layer such as lattice constants and energy gap value, after that you can choose the suitable compounds to use it as a buffer or window layer.
With my regards
Dear Md,
The most common compounds for CIGS are ZnS, ZnSe, ZnO, (Zn,Mg)O, In(OH)3, In2S3, In2Se3, InZnSex, SnO2, and SnS2. They can be as an alternative to more toxic CdS
Regards
A priori its possible if you respect some conditions related to band gap engineering, conductivity, optical agreement and so on. But the main problems are the cost of III-V compounds and the required temperatures for the deposition of such a compound..
materials with large band-gap, high transparency, and good electron affinity is preferred to use as buffer layer for solar cells,
Further, they should be cost effective, stable, easily synthesized and prepared with low cost deposition method.
make sure about this parameters with your required material property.
Dear Md.,
Yes it is possible from the conceptual point of view. As an example researchers combined two layer perovskite solar cell structure with three five compounds. According to the authors, the cells are based on an architecture of two perovskite layers (CH3NH3SnI3 and CH3NH3PbI3−xBrx), incorporating GaN, monolayer hexagonal boron nitride, and graphene aerogel. For more details please follow the link:http://www.nature.com/nmat/journal/vaop/ncurrent/full/nmat4795.html
However i have the same believe as Anton. Window layers for CIGS absorber solar cells can be made from two six compounds with large band gap such as ZnS rather than the three five compounds. For more details please refer to the link:http://www.sciencedirect.com/science/article/pii/S0040609004016062
Best wishes
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