The reliability and stability of multijunction amorphous silicon PV modules
- Solarex, Newtown, PA (United States)
Solarex is developing a manufacturing process for the commercial production of 8 ft{sup 2} multijunction amorphous silicon (a-Si) PV modules starting in 1996. The device structure used in these multijunction modules is: glass/textured tin oxide/p-i-n/p-i-n/ZnO/Al/EVA/Tedlar where the back junction of the tandem structure contains an amorphous silicon germanium alloy. As an interim step, 4 ft{sup 2} multijunction modules have been fabricated in a pilot production mode over the last several months. The distribution of initial conversion efficiencies for an engineering run of 67 modules (4 ft{sup 2}) is shown. Measurements recently performed at NREL indicate that the actual efficiencies are about 5% higher than those shown, and thus exhibit an average initial conversion efficiency of about 9.5%. The data indicates that the process is relatively robust since there were no modules with initial efficiencies less than 7.5%.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- OSTI ID:
- 175539
- Report Number(s):
- NREL/CP-411-20379; CONF-9509187-; ON: DE96000468; TRN: 96:000710-0004
- Resource Relation:
- Conference: Workshop on photovoltaic performance and reliability, Golden, CO (United States), 7-8 Sep 1995; Other Information: PBD: Nov 1995; Related Information: Is Part Of Photovoltaic performance and reliability workshop; Mrig, L. [ed.]; PB: 361 p.
- Country of Publication:
- United States
- Language:
- English
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