Title :
Optical characterization of CuInSe2 solar cells obtained by the selenization method
Author :
Dhere, R.G. ; Ramanathan, K. ; Coutts, T.J. ; Basol, B.M. ; Kapur, V.K.
Author_Institution :
Nat. Renewable Energy Lab., Golden, CO, USA
Abstract :
A systematic step-by-step analysis of the optical characteristics of ZnO/CdS/CuInSe2 solar cells prepared by the selenization technique is reported. The CuInSe2 layer was found to be rough, with a surface feature size of approximately 0.7-1 μm. The final feature size of the cell after ZnO deposition is approximately 0.8 μm. The texturing provided by CuInSe2 and ZnO and the index matching combine effectively to reduce the reflectivity of the ZnO/CdS/CuInSe2 structure to about 5% over the entire spectral range. An estimate of the losses in the window layers and their effect on cell performance is provided
Keywords :
II-VI semiconductors; cadmium compounds; copper compounds; indium compounds; optical films; optical testing; semiconductor thin films; solar cells; ternary semiconductors; zinc compounds; 0.7 to 1 micron; 0.8 micron; CuInSe2-CdS-ZnO; deposition; index matching; losses; optical characteristics; performance; reflectivity; selenization method; solar cells; surface topography; texturing; window layers; Chemicals; Conductive films; Glass; Optical films; Photovoltaic cells; Reflectivity; Sputtering; Substrates; Windows; Zinc oxide;
Conference_Titel :
Photovoltaic Specialists Conference, 1991., Conference Record of the Twenty Second IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
0-87942-636-5
DOI :
10.1109/PVSC.1991.169377
