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Title: A novel structure, high conversion efficiency p-SiC/graded p-SiC/i-Si/n-Si/metal substrate-type amorphous silicon solar cell

Abstract

A novel structure, high conversion efficiency amorphous silicon (a-Si)/metal substrate-type solar cell has been developed. The new structure, deduced from the conventional pin junction by the use of a gradual compositional grading p-type a-SiC:H layer between an ultrathin (approx.20 A) wide optical band gap (approx.2.4 eV) p-type a-SiC:H layer and the i layer, exhibits markedly enhanced open-circuit voltage (V/sub oc/) and short-circuit current density (I/sub sc/) over the conventional a-Si pin/substrate-type solar cell. Especially, the collection efficiency in the newly developed structure was found to be remarkably increased at short wavelengths. The experimentally observed improvement in the blue response is due to the reduction in effective interface recombination combined with the enhanced window effect. An energy conversion efficiency of 8.40% under air mass (AM) 1 (100 mW/cm/sup 2/) illumination has been obtained in the first trial of a cell fabricated by the rf glow discharge decomposition of pure silane (SiH/sub 4/).

Authors:
; ;
Publication Date:
Research Org.:
Tokyo Institute of Technology, 2-12-1, Ohokayama, Meguro-ku, Tokyo 152, Japan
OSTI Identifier:
7034940
Resource Type:
Journal Article
Resource Relation:
Journal Name: J. Appl. Phys.; (United States); Journal Volume: 56:2
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; SILICON SOLAR CELLS; DESIGN; EFFICIENCY; P-N JUNCTIONS; AMORPHOUS STATE; ELECTRIC POTENTIAL; ELECTRICAL FAULTS; FABRICATION; GLOW DISCHARGES; SILANES; SILICA; SILICON; CHALCOGENIDES; DIRECT ENERGY CONVERTERS; ELECTRIC DISCHARGES; ELEMENTS; EQUIPMENT; HYDRIDES; HYDROGEN COMPOUNDS; JUNCTIONS; MINERALS; ORGANIC COMPOUNDS; ORGANIC SILICON COMPOUNDS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRIC CELLS; PHOTOVOLTAIC CELLS; SEMICONDUCTOR JUNCTIONS; SEMIMETALS; SILICON COMPOUNDS; SILICON OXIDES; SOLAR CELLS; SOLAR EQUIPMENT; 140501* - Solar Energy Conversion- Photovoltaic Conversion

Citation Formats

Lim, K.S., Konagai, M., and Takahashi, K. A novel structure, high conversion efficiency p-SiC/graded p-SiC/i-Si/n-Si/metal substrate-type amorphous silicon solar cell. United States: N. p., 1984. Web. doi:10.1063/1.333943.
Lim, K.S., Konagai, M., & Takahashi, K. A novel structure, high conversion efficiency p-SiC/graded p-SiC/i-Si/n-Si/metal substrate-type amorphous silicon solar cell. United States. doi:10.1063/1.333943.
Lim, K.S., Konagai, M., and Takahashi, K. Sun . "A novel structure, high conversion efficiency p-SiC/graded p-SiC/i-Si/n-Si/metal substrate-type amorphous silicon solar cell". United States. doi:10.1063/1.333943.
@article{osti_7034940,
title = {A novel structure, high conversion efficiency p-SiC/graded p-SiC/i-Si/n-Si/metal substrate-type amorphous silicon solar cell},
author = {Lim, K.S. and Konagai, M. and Takahashi, K.},
abstractNote = {A novel structure, high conversion efficiency amorphous silicon (a-Si)/metal substrate-type solar cell has been developed. The new structure, deduced from the conventional pin junction by the use of a gradual compositional grading p-type a-SiC:H layer between an ultrathin (approx.20 A) wide optical band gap (approx.2.4 eV) p-type a-SiC:H layer and the i layer, exhibits markedly enhanced open-circuit voltage (V/sub oc/) and short-circuit current density (I/sub sc/) over the conventional a-Si pin/substrate-type solar cell. Especially, the collection efficiency in the newly developed structure was found to be remarkably increased at short wavelengths. The experimentally observed improvement in the blue response is due to the reduction in effective interface recombination combined with the enhanced window effect. An energy conversion efficiency of 8.40% under air mass (AM) 1 (100 mW/cm/sup 2/) illumination has been obtained in the first trial of a cell fabricated by the rf glow discharge decomposition of pure silane (SiH/sub 4/).},
doi = {10.1063/1.333943},
journal = {J. Appl. Phys.; (United States)},
number = ,
volume = 56:2,
place = {United States},
year = {Sun Jul 15 00:00:00 EDT 1984},
month = {Sun Jul 15 00:00:00 EDT 1984}
}