Jump to main content
Jump to site search


Effect of Cu/In ratio and shell thickness on photo-stability of CuInS2/ZnS nanocrystals

Abstract

CuInS2 core nanocrystals (NCs) with different Cu/In ratios were synthesized, and a rapid synthesis method was used to overcoat ZnS shells onto them. The time-resolved photoluminescence study revealed that the broad PL peak consists of the contribution from two kinds of donor-acceptor pairs (DAPs), and as indicated by the photo-stability measurement, the higher-energy DAPs are sensitive to irradiation, resulting in the photo-instability of the CuInS2 NCs. The intensity ratio between the high-energy DAPs and the low-energy ones is decreased with the decrease of the Cu/In ratio, and it is suggested that the high-energy DAPs are near the core/shell interfaces, and the lower-energy ones are inside the cores. The shell’s overcoating, which would make the higher-energy DAPs be away from the surroundings, can improve the photo-stability of the NCs.

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Sep 2017, accepted on 03 Nov 2017 and first published on 03 Nov 2017


Article type: Paper
DOI: 10.1039/C7TC04032F
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
  •   Request permissions

    Effect of Cu/In ratio and shell thickness on photo-stability of CuInS2/ZnS nanocrystals

    B. Huang, R. Xu, L. Zhang, Y. Yuan, C. Lu, Y. Cui and J. Zhang, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C7TC04032F

Search articles by author

Spotlight

Advertisements