Efficient light harvesting and carrier transport in PbS quantum dots/silicon nanotips heterojunctions

Chun Ying Huang; Di Yan Wang; Chun Hsiung Wang; Yaw Tyng Wang; You Ting Jiang; Ying Jay Yang; Chia Chun Chen; Yang Fang Chen

doi:10.1088/0022-3727/44/8/085103

Efficient light harvesting and carrier transport in PbS quantum dots/silicon nanotips heterojunctions

Chun Ying Huang^*, Di Yan Wang, Chun Hsiung Wang, Yaw Tyng Wang, You Ting Jiang, Ying Jay Yang, Chia Chun Chen, Yang Fang Chen

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

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 14.17mAcm^-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.

Original language	English
Article number	085103
Journal	Journal of Physics D: Applied Physics
Volume	44
Issue number	8
DOIs	https://doi.org/10.1088/0022-3727/44/8/085103
Publication status	Published - 2011 Mar 2

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

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10.1088/0022-3727/44/8/085103

Cite this

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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 14.17mAcm-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.",

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AU - Huang, Chun Ying

AU - Wang, Di Yan

AU - Wang, Chun Hsiung

AU - Wang, Yaw Tyng

AU - Jiang, You Ting

AU - Yang, Ying Jay

AU - Chen, Chia Chun

AU - Chen, Yang Fang

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AB - 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.

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Efficient light harvesting and carrier transport in PbS quantum dots/silicon nanotips heterojunctions

Abstract

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