Highly Asymmetric n super(+)-p Heterojunction Quantum-Dot Solar Cells with Significantly Improved Charge-Collection Efficiencies

Highly Asymmetric n super(+)-p Heterojunction Quantum-Dot Solar Cells with Significantly Improved Charge-Collection Efficiencies

The depletion region width of metal-oxide/quantum-dot (QD) heterojunction solar cells is increased by a new method in which heavily boron-doped n super(+)-ZnO is employed. It is effectively increased in the QD layer by 30% compared to the counterpart with conventional n-ZnO, and provides 41% and 37%...

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Veröffentlicht in:Advanced materials (Weinheim) 2016-03, Vol.28 (9), p.1780-1787
Hauptverfasser: Choi, Min-Jae, Kim, Sunchuel, Lim, Hunhee, Choi, Jaesuk, Sim, Dong Min, Yim, Soonmin, Ahn, Byung Tae, Kim, Jin Young, Jung, Yeon Sik
Format: Artikel
Sprache:eng
Schlagworte:
Asymmetry
Depletion
Energy conversion efficiency
Heterojunctions
Metal oxides
Photovoltaic cells
Quantum dots
Solar cells
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Zusammenfassung:The depletion region width of metal-oxide/quantum-dot (QD) heterojunction solar cells is increased by a new method in which heavily boron-doped n super(+)-ZnO is employed. It is effectively increased in the QD layer by 30% compared to the counterpart with conventional n-ZnO, and provides 41% and 37% improvement of J sub(sc) (16.7 mA cm super(-2) to 23.5 mA cm super(-2)) and power conversion efficiency (5.52% to 7.55%), respectively.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201503879