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Title: Efficient light harvesting and carrier transport in PbS quantum dots/silicon nanotips heterojunctions
Authors: 國立臺灣師範大學化學系
C.-Y. Huang
D.-Y. Wang
C.-H. Wang
Y.-T. Wang
Y.-T. Jiang
Y.-J. Yang
Chia-Chun Chen
Y.-F. Chen
Issue Date: 2-Mar-2011
Publisher: IOP Publishing
Abstract: 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 14.17 mA cm−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.
ISSN: 0022-3727
Other Identifiers: ntnulib_tp_C0301_01_071
Appears in Collections:教師著作

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