Title

Thin-Film Photovoltaics

Abstract

CdTe and Cu In1-x Gax Se2-y Sy (CIGSS) are ideal candidates for thin-film solar cells. Present photovoltaic (PV) conversion efficiencies of champion thin-film solar cells are: Cu In1-x Gax Se2 (CIGS) 19.5%, CdTe 16.5%, and a-Si: H 12.4%. Thin-film PV modules could spearhead production growth of photovoltaics in the United States because of their added production capacity. For this purpose, module efficiencies must be improved to the 13%-15% range. Obtaining Ohmic contacts is difficult, especially for CdTe, because of the inherently low p -type doping level. Therefore, increasing the p -type doping level is important. Growth of CIGSS film must be controlled carefully as it transitions from Cu-rich to In-rich composition. Other issues for CIGSS cells are minimizing indium consumption, and increasing process throughput of selenizationsulfurization and transparent conducting oxide deposition. Development of all-dry processing for CdS deposition would be beneficial for both cells. This paper discusses basic devices and related issues. © 2005 American Vacuum Society.

Publication Date

7-1-2005

Publication Title

Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films

Volume

23

Issue

4

Number of Pages

1208-1214

Document Type

Article; Proceedings Paper

DOI Link

https://doi.org/10.1116/1.1897697

Socpus ID

31044456833 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/31044456833

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