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...

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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
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Abstract 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.
AbstractList We have developed a compact concentrator photovoltaic (CPV) module that comprises micro-solar cells with an area of approximately 0.6 x 0.6mm super(2) 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 approximately 5 x 5mm super(2) 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.
We have developed a compact concentrator photovoltaic (CPV) module that comprises micro-solar cells with an area of ≈0.6 × 0.6 mm 2 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 mm 2 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.
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.
Author Fujii, Eiji
Wiemer, Michael
Matsushita, Akio
Inoue, Kazuo
Ueda, Daisuke
Arase, Hidekazu
Asano, Tetsuya
Hayashi, Nobuhiko
Yamamoto, Masaki
Fidaner, Onur
Itou, Akihiro
Inoue, Daijiro
Anda, Yoshiharu
Futakuchi, Ryutaro
Ishida, Hidetoshi
Nakagawa, Tohru
Ueda, Tetsuzo
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Snippet 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...
We have developed a compact concentrator photovoltaic (CPV) module that comprises micro-solar cells with an area of ≈0.6 × 0.6 mm 2 sandwiched between a...
We have developed a compact concentrator photovoltaic (CPV) module that comprises micro-solar cells with an area of approximately 0.6 x 0.6mm super(2)...
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StartPage 4
SubjectTerms Carrier recombination
Circuit boards
Concentrators
Electrodes
Energy conversion efficiency
Illumination
Modules
Photovoltaic cells
Solar cells
Title High-efficiency thin and compact concentrator photovoltaics using micro-solar cells with via-holes sandwiched between thin lens-array and circuit board
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