Efficient light harvesting by photon downconversion and light trapping in hybrid ZnS nanoparticles/Si nanotips solar cells

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

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

A hybrid colloidal ZnS nanoparticles/Si nanotips p-n active layer has been demonstrated to have promising potential for efficient solar spectrum utilization in crystalline silicon-based solar cells. The hybrid solar cell shows an enhancement of 20% in the short-circuit current and approximately 10% in power conversion efficiency compared to its counterpart without integrating ZnS nanoparticles. The enhancement has been investigated by external quantum efficiency, photoluminescence excitation spectrum, photoluminescence, and reflectance to distinct the role of ZnS quantum dots for light harvesting. It is concluded that ZnS nanoparticles not only act as frequency downconversion centers in the ultraviolet region but also serve as antireflection coating for light trapping in the measured spectral regime. Our approach is ready to be extended to many other material systems for the creation of highly efficient photovoltaic devices.

Original languageEnglish
Pages (from-to)5849-5854
Number of pages6
JournalACS Nano
Volume4
Issue number10
DOIs
Publication statusPublished - 2010 Oct 26

    Fingerprint

Keywords

  • downconversion
  • light harvesting
  • light trapping
  • quantum dot
  • silicon nanotips
  • solar cell

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Huang, C. Y., Wang, D. Y., Wang, C. H., Chen, Y. T., Wang, Y. T., Jiang, Y. T., Yang, Y. J., Chen, C. C., & Chen, Y. F. (2010). Efficient light harvesting by photon downconversion and light trapping in hybrid ZnS nanoparticles/Si nanotips solar cells. ACS Nano, 4(10), 5849-5854. https://doi.org/10.1021/nn101817s