Siemens solar CIS photovoltaic module and system performance at the National Renewable Energy Laboratory
This paper evaluates the individual module and array performance of Siemens Solar Industries` copper indium diselenide (CIS) polycrystalline thin-film technology. This is accomplished by studying module and array performance over time. Preliminary temperature coefficients for maximum power, maximum-power voltage, maximum-power current, open-circuit voltage, short-circuit current, and fill factor are determined at both the module and array level. These coefficients are used to correct module/array performance to 25{degrees}C to evaluate stability. We show that CIS exhibits a strong inverse correlation between array power and back-of-module temperature. This is due mainly to the narrow bandgap of the CIS material, which results in a strong inverse correlation between voltage and temperature. We also show that the temperature-corrected module and array performance has been relatively stable over the evaluation interval (=2 years).
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC36-83CH10093
- OSTI ID:
- 236271
- Report Number(s):
- NREL/TP-411-20413; CONF-960513-2; ON: DE96007890; TRN: 96:003312
- Resource Relation:
- Conference: 25. photovoltaic solar energy conference, Washington, DC (United States), 13-17 May 1996; Other Information: PBD: May 1996
- Country of Publication:
- United States
- Language:
- English
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