https://scholars.lib.ntu.edu.tw/handle/123456789/362348
標題: | Efficient light harvesting and carrier transport in PbS quantum dots/silicon nanotips heterojunctions | 作者: | YANG-FANG CHEN | 公開日期: | 2011 | 卷: | 44 | 期: | 8 | 來源出版物: | Journal of Physics D: Applied Physics | 摘要: | Light harvesting from nanocomposites consisting of silicon (Si) nanotips and PbS quantum dots (QDs) has been investigated. We show that Si nanotips provide direct carrier transport paths, additional interfacial area and light trapping. We observe that there is a dramatic enhancement in short-circuit current (from 9.34 to 14.17mAcm-2) with nanotips structure than that of the bulk Si wafer. In addition, with an additional electron blocking layer, the photovoltaic performance can be further increased. The nanocomposites consisting of QDs and Si nanotips therefore open a promising route for efficient light harvesting from visible to infrared with improved power conversion efficiency. © 2011 IOP Publishing Ltd. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-79951782403&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/362348 |
DOI: | 10.1088/0022-3727/44/8/085103 | SDG/關鍵字: | Electron blocking layer; Interfacial areas; Light-harvesting; Light-trapping; Photovoltaic performance; Power conversion efficiencies; Quantum dots; Si wafer; Conversion efficiency; Harvesting; Heterojunctions; Nanocomposites; Nanotips; Quantum chemistry; Semiconducting lead compounds; Semiconductor quantum dots; Silicon; Silicon wafers; Semiconducting silicon compounds |
顯示於: | 物理學系 |
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