Template Synthesis of CuInS2 Nanocrystals from In2S3 Nanoplates and Their Application as Counter Electrodes in Dye-Sensitized Solar Cells

Bingkun Chen; Shuai Chang; Deyao Li; Liangliang Chen; Yongtian Wang; Tao Chen; Bingsuo Zou; Haizheng Zhong; Andrey L. Rogach

doi:10.1021/acs.chemmater.5b01971

Template Synthesis of CuInS₂ Nanocrystals from In₂S₃ Nanoplates and Their Application as Counter Electrodes in Dye-Sensitized Solar Cells

Bingkun Chen, Shuai Chang, Deyao Li, Liangliang Chen, Yongtian Wang, Tao Chen, Bingsuo Zou, Haizheng Zhong^*, Andrey L. Rogach

^*Corresponding author for this work

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

129 Citations (Scopus)

Abstract

We report the room temperature template synthesis of CuInS₂ nanocrystals through incorporation of Cu⁺ cations into In₂S₃ nanoplates whose chemical composition has been controlled by varying the amount of copper ions in the reaction mixture. As a result, bandgaps of the resultant CuInS₂ nanoplates can be tuned from 1.45 to 1.19 eV with [Cu]/[In] molar ratios increasing from 0.7 to 2.9, which was demonstrated by the cyclic voltammetry. We explored the use of CuInS₂ nanocrystals as potential counter electrodes in dye-sensitized solar cells, and a power conversion efficiency of 6.83% was achieved without selenization and ligand exchange. The value is comparable with the performance of a control device using Pt as a counter electrode (power conversion efficiency: 7.08%) under the same device architecture.

Original language	English
Pages (from-to)	5949-5956
Number of pages	8
Journal	Chemistry of Materials
Volume	27
Issue number	17
DOIs	https://doi.org/10.1021/acs.chemmater.5b01971
Publication status	Published - 8 Sept 2015

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title = "Template Synthesis of CuInS2 Nanocrystals from In2S3 Nanoplates and Their Application as Counter Electrodes in Dye-Sensitized Solar Cells",

abstract = "We report the room temperature template synthesis of CuInS2 nanocrystals through incorporation of Cu+ cations into In2S3 nanoplates whose chemical composition has been controlled by varying the amount of copper ions in the reaction mixture. As a result, bandgaps of the resultant CuInS2 nanoplates can be tuned from 1.45 to 1.19 eV with [Cu]/[In] molar ratios increasing from 0.7 to 2.9, which was demonstrated by the cyclic voltammetry. We explored the use of CuInS2 nanocrystals as potential counter electrodes in dye-sensitized solar cells, and a power conversion efficiency of 6.83% was achieved without selenization and ligand exchange. The value is comparable with the performance of a control device using Pt as a counter electrode (power conversion efficiency: 7.08%) under the same device architecture.",

author = "Bingkun Chen and Shuai Chang and Deyao Li and Liangliang Chen and Yongtian Wang and Tao Chen and Bingsuo Zou and Haizheng Zhong and Rogach, {Andrey L.}",

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T1 - Template Synthesis of CuInS2 Nanocrystals from In2S3 Nanoplates and Their Application as Counter Electrodes in Dye-Sensitized Solar Cells

AU - Chen, Bingkun

AU - Chang, Shuai

AU - Li, Deyao

AU - Chen, Liangliang

AU - Wang, Yongtian

AU - Chen, Tao

AU - Zou, Bingsuo

AU - Zhong, Haizheng

AU - Rogach, Andrey L.

PY - 2015/9/8

Y1 - 2015/9/8

N2 - We report the room temperature template synthesis of CuInS2 nanocrystals through incorporation of Cu+ cations into In2S3 nanoplates whose chemical composition has been controlled by varying the amount of copper ions in the reaction mixture. As a result, bandgaps of the resultant CuInS2 nanoplates can be tuned from 1.45 to 1.19 eV with [Cu]/[In] molar ratios increasing from 0.7 to 2.9, which was demonstrated by the cyclic voltammetry. We explored the use of CuInS2 nanocrystals as potential counter electrodes in dye-sensitized solar cells, and a power conversion efficiency of 6.83% was achieved without selenization and ligand exchange. The value is comparable with the performance of a control device using Pt as a counter electrode (power conversion efficiency: 7.08%) under the same device architecture.

AB - We report the room temperature template synthesis of CuInS2 nanocrystals through incorporation of Cu+ cations into In2S3 nanoplates whose chemical composition has been controlled by varying the amount of copper ions in the reaction mixture. As a result, bandgaps of the resultant CuInS2 nanoplates can be tuned from 1.45 to 1.19 eV with [Cu]/[In] molar ratios increasing from 0.7 to 2.9, which was demonstrated by the cyclic voltammetry. We explored the use of CuInS2 nanocrystals as potential counter electrodes in dye-sensitized solar cells, and a power conversion efficiency of 6.83% was achieved without selenization and ligand exchange. The value is comparable with the performance of a control device using Pt as a counter electrode (power conversion efficiency: 7.08%) under the same device architecture.

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Template Synthesis of CuInS₂ Nanocrystals from In₂S₃ Nanoplates and Their Application as Counter Electrodes in Dye-Sensitized Solar Cells

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