Research on high-efficiency, multiple-gap, multijunction, amorphous-silicon-based alloy thin-film solar cells
- Energy Conversion Devices, Inc., Troy, MI (USA)
This report presents results of research on advancing our understanding of amorphous-silicon-based alloys and their use in small-area multijunction solar cells. The principal objectives of the program are to develop a broad scientific base for the chemical, structural, optical, and electronic properties of amorphous-silicon-based alloys; to determine the optimum properties of these alloy materials as they relate to high-efficiency cells; to determine the optimum device configuration for multijunction cells; and to demonstrate proof-of-concept, multijunction, a-Si-alloy-based solar cells with 18% efficiency under standard AM1.5 global insolation conditions and with an area of at least 1 cm{sup 2}. A major focus of the work done during this reporting period was the optimization of a novel, multiple-graded structure that enhances cell efficiency through band-gap profiling. The principles of the operation of devices incorporating such a structure, computer simulations of those, and experimental results for both single- and multijunction cells prepared by using the novel structure are discussed in detail. 14 refs., 35 figs., 7 tabs.
- Research Organization:
- Solar Energy Research Inst., Golden, CO (USA); Energy Conversion Devices, Inc., Troy, MI (USA)
- Sponsoring Organization:
- DOE/CE
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 5563779
- Report Number(s):
- SERI/STR-211-3526; ON: DE89009444
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
AMORPHOUS STATE
DIRECT ENERGY CONVERTERS
DOCUMENT TYPES
EFFICIENCY
EQUIPMENT
FILMS
GRADED BAND GAPS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PROGRESS REPORT
RESEARCH PROGRAMS
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT
THIN FILMS
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
AMORPHOUS STATE
DIRECT ENERGY CONVERTERS
DOCUMENT TYPES
EFFICIENCY
EQUIPMENT
FILMS
GRADED BAND GAPS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PROGRESS REPORT
RESEARCH PROGRAMS
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT
THIN FILMS