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

Research output: Contribution to journalArticle

17 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 languageEnglish
Article number085103
JournalJournal of Physics D: Applied Physics
Volume44
Issue number8
DOIs
Publication statusPublished - 2011 Mar 2

Fingerprint

Nanotips
Carrier transport
Silicon
Semiconductor quantum dots
Heterojunctions
heterojunctions
quantum dots
silicon
Nanocomposites
nanocomposites
short circuit currents
Silicon wafers
Short circuit currents
Conversion efficiency
trapping
routes
wafers
Infrared radiation
Electrons
augmentation

ASJC Scopus subject areas

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

Cite this

Huang, C. Y., Wang, D. Y., Wang, C. H., Wang, Y. T., Jiang, Y. T., Yang, Y. J., ... Chen, Y. F. (2011). Efficient light harvesting and carrier transport in PbS quantum dots/silicon nanotips heterojunctions. Journal of Physics D: Applied Physics, 44(8), [085103]. https://doi.org/10.1088/0022-3727/44/8/085103

Efficient light harvesting and carrier transport in PbS quantum dots/silicon nanotips heterojunctions. / Huang, Chun Ying; Wang, Di Yan; Wang, Chun Hsiung; Wang, Yaw Tyng; Jiang, You Ting; Yang, Ying Jay; Chen, Chia Chun; Chen, Yang Fang.

In: Journal of Physics D: Applied Physics, Vol. 44, No. 8, 085103, 02.03.2011.

Research output: Contribution to journalArticle

Huang, Chun Ying ; Wang, Di Yan ; Wang, Chun Hsiung ; Wang, Yaw Tyng ; Jiang, You Ting ; Yang, Ying Jay ; Chen, Chia Chun ; Chen, Yang Fang. / Efficient light harvesting and carrier transport in PbS quantum dots/silicon nanotips heterojunctions. In: Journal of Physics D: Applied Physics. 2011 ; Vol. 44, No. 8.
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