Chemical Bath Deposition of CdS Thin Films on Cuins2 and Si Substrates - A Comparative X-Ray Emission Study

Author

Bar, M. ; Weinhardt, L. ; Fuchs, O. ; Klaer, J. ; Peiser, J. ; Schock, H.W. ; Heske, C.

Author_Institution

Dept. of Chem., Nevada Univ., Las Vegas, NV

Volume

1

fYear

2006

fDate

7-12 May 2006

Firstpage

416

Lastpage

419

Abstract

Wide-gap chalcopyrite CuInS₂ ("CIS")-based thin film solar cells are far behind their low-gap counterparts in terms of photovoltaic performance. To date, most chalcopyrite-based devices include a CdS layer, which is deposited in a chemical bath (CBD). In order to shed light on the effects induced by the interface formation, the buried CdS/CIS interface was investigated by X-ray emission spectroscopy. By comparing the CdS/CIS interface with a CdS/Si reference heterostructure, we find that the properties of the substrate determine the chemical structure of the heterointerface. In particular, we find that the formation of the CBD-CdS on Si substrates is delayed compared to that on CIS absorbers

Keywords

II-VI semiconductors; X-ray photoelectron spectra; cadmium compounds; liquid phase deposition; semiconductor growth; semiconductor heterojunctions; semiconductor thin films; solar cells; CIS absorbers; CdS-CuInS₂; CdS-Si; CuInS₂; Si; X-ray emission spectroscopy; buried interface; chalcopyrite-based devices; chemical bath deposition; chemical structure; interface formation; low-gap counterparts; photovoltaic performance; reference heterostructure; wide-gap chalcopyrite semiconductor thin films; Chemicals; Computational Intelligence Society; Photovoltaic cells; Photovoltaic systems; Semiconductor thin films; Solar power generation; Spectroscopy; Sputtering; Substrates; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Energy Conversion, Conference Record of the 2006 IEEE 4th World Conference on

Conference_Location

Waikoloa, HI

Print_ISBN

1-4244-0016-3

Electronic_ISBN

1-4244-0017-1

Type

conf

DOI

10.1109/WCPEC.2006.279478

Filename

4059651