期刊
APPLIED PHYSICS LETTERS
卷 103, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4813074
关键词
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资金
- King Abdullah University of Science and Technology (KAUST) [KUS-11-009-21]
- Ontario Research Fund Research Excellence Program
- Natural Sciences and Engineering Research Council (NSERC) of Canada
A quantum junction solar cell architecture was recently reported that employs colloidal quantum dots (CQDs) on each side of the p-n junction. This architecture extends the range of design opportunities for CQD photovoltaics, since the bandgap can be tuned across the light-absorbing semiconductor layer via control over CQD size, employing solution-processed, room-temperature fabricated materials. We exploit this feature by designing and demonstrating a field-enhanced heterojunction architecture. We optimize the electric field profile within the solar cell through bandgap engineering, thereby improving carrier collection and achieving an increased open circuit voltage, resulting in a 12% improvement in power conversion efficiency. (C) 2013 AIP Publishing LLC.
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