High-efficiency thin and compact concentrator photovoltaics using micro-solar cells with via-holes sandwiched between thin lens-array and circuit board

We have developed a compact concentrator photovoltaic (CPV) module that comprises micro-solar cells with an area of 0.6 × 0.6 mm2 sandwiched between a 20-mm-thick lens array and a 1-mm-thick circuit board with no air gap. To establish electrical connections between the circuit board and the micro-so...

Full description

Saved in:
Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 53; no. 4S; pp. 4 - 1-04ER01-5
Main Authors Itou, Akihiro, Asano, Tetsuya, Inoue, Daijiro, Arase, Hidekazu, Matsushita, Akio, Hayashi, Nobuhiko, Futakuchi, Ryutaro, Inoue, Kazuo, Yamamoto, Masaki, Fujii, Eiji, Nakagawa, Tohru, Anda, Yoshiharu, Ishida, Hidetoshi, Ueda, Tetsuzo, Fidaner, Onur, Wiemer, Michael, Ueda, Daisuke
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 2014
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:We have developed a compact concentrator photovoltaic (CPV) module that comprises micro-solar cells with an area of 0.6 × 0.6 mm2 sandwiched between a 20-mm-thick lens array and a 1-mm-thick circuit board with no air gap. To establish electrical connections between the circuit board and the micro-solar cells, we developed a micro-solar cell with positive and negative electrodes on the lower face of the cell. In this study, we demonstrated the photovoltaic performance of the micro-solar cell closely approaches that of the standard solar cell measuring 5 × 5 mm2 commonly used in conventional CPVs under concentrated illumination. Our study showed that the negative effect on PV performance of perimeter carrier recombination in the micro-solar cell was insignificant under concentrated illumination. Finally, we assembled our micro-solar cells into a CPV module and achieved the module energy conversion efficiency of 34.7% under outdoor solar illumination.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.53.04ER01