Title :
New type structure of a-Si solar cell submodules fabricated by microscopic hole spacing technique
Author :
Ohnishi, M. ; Shibuya, H. ; Okuda, N. ; Inoue, H. ; Kishi, Y. ; Kiyama, S. ; Kawata, H. ; Okamoto, S. ; Tsuda, S. ; Nakano, S. ; Kuwano, Y.
Author_Institution :
Sanyo Electr. Co. Ltd., Osaka, Japan
Abstract :
A laser patterning method is investigated as a fabrication technique for microscopic holes on a-Si solar cells. The optimum laser patterning conditions calculated from a three-dimensional thermal analysis were confirmed experimentally. It is shown that microscopic holes can be fabricated on an a-Si solar cell using this method without any significant damage to the photovoltaic performance around the holes. This technique was applied to two unique structures for a-Si solar cell submodules: a see-through integrated-type submodule, and a through-hole contact (THC) integrated-type submodule. The hole pattern of see-through submodules was optimized for the purpose of obtaining both high transmittance and light uniformity. The performance for THC submodules is estimated by numerical simulation based on a distributed equivalent circuit model. It is found that a 10% increase in the maximum output power can be expected using this structure
Keywords :
amorphous semiconductors; elemental semiconductors; laser beam machining; silicon; solar cells; 3D thermal analysis; amorphous Si solar cells; distributed equivalent circuit model; laser patterning method; light uniformity; maximum output power; microscopic hole spacing; see-through integrated-type submodule; semiconductor; through-hole contact integrated-type submodule; transmittance; Equivalent circuits; Laser beams; Microscopy; Optical materials; Pattern analysis; Photovoltaic cells; Photovoltaic systems; Power generation; Power lasers; Solar power generation;
Conference_Titel :
Photovoltaic Specialists Conference, 1990., Conference Record of the Twenty First IEEE
Conference_Location :
Kissimmee, FL
DOI :
10.1109/PVSC.1990.111839
