Research on high-efficiency, single-junction, monolithic, thin-film amorphous silicon solar cells: Semiannual subcontract report No. 3, 1 December 1985--31 May 1986
This report describes progress in research on high-efficiency, single-junction into five lithic, thin-film amorphous silicon solar cells. The work was divided into five tasks, which include research on a-Si materials; nonsemiconductor materials; web growth; and monolithic, intraconnected cells and submodules. Also described is work done with a multichamber deposition system. Results included achieving an optical band gap of 1.73-1.75 eV in the intrinsic i-layer. A new roll coater was acquired for use as a multilayer transparent top-contact deposition system. Textured substrates were also investigated to increase the short-circuit current. In doping profile work, a model indicated that a carbon profile could be used in place of the boron profile to raise the open-circuit voltage. Silver-filled epoxy-ITO contacts were found to be unstable over time. Two-web growth methods were demonstrated to obtain submodule performance that is about 80% of small-area (1 cm /sup 2/) efficiency. With the multichamber deposition system, a-Si p-i-n layers were deposited onto metallized polyimide web in a continuous, roll-to-roll process. 11 refs., 36 figs., 2 tabs.
- Research Organization:
- Solar Energy Research Inst., Golden, CO (USA); Minnesota Mining and Mfg. Co., St. Paul (USA). Electronic and Information Sector Labs.
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 7229105
- Report Number(s):
- SERI/STR-211-3343; ON: DE88001176
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
AMORPHOUS STATE
DEPOSITION
DIRECT ENERGY CONVERTERS
DOCUMENT TYPES
DOPED MATERIALS
EFFICIENCY
EQUIPMENT
FILMS
MATERIALS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PROGRESS REPORT
RESEARCH PROGRAMS
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT
THIN FILMS