Thin Film Cadmium Telluride Photovoltaic Cells: Annual Subcontract Report, 1 November 1991 - 31 October 1992
This report describes work to develop and optimize radio-frequency (RF) sputtering and laser-driven physical vapor deposition (LDPVD) for CdTe-based thin-film solar cells. Both of these techniques are vacuum-based and share several other common physical principles. However, they differ somewhat in the typical kinetic energies of Cd, Te, and S that impact on the growth surface. The values of several processing parameters-optimized with the LDPVD technique-were taken as starting values for the RF sputtering method. We completed an initial optimization of the sputtering parameters for the CdTe growth and also successfully sputtered CdS for the first time. In addition, we successfully fabricated what we believe are the first CdS/CdTe cells in which RF sputtering was used for both CdS and CdTe layers. We achieved an all-LDPVD ell with an air mass (AM) 1.5 efficiency of 10.5% and an all-RF-sputtered cell with AM 1.5 efficiency of 10.4%, as tested by NREL.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 10190991
- Report Number(s):
- NREL/TP-451-5813; ON: DE94000201; BR: WM1020000
- Resource Relation:
- Other Information: PBD: Oct 1993
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thin Film Cadmium Telluride Photovoltaic Cells, Annual Subcontract Report, 23 July 1990-31 October 1991
High-efficiency thin-film cadmium telluride photovoltaic cells. Annual subcontract report, January 20, 1995--January 19, 1996