A top-down strategy to synthesize wurtzite Cu2ZnSnS4 nanocrystals by green chemistry

Author(s): Yiwen Sun ¹ ^, ² ^, ³ ^, ⁴ , Zhengqiao Hu ¹ ^, ² ^, ³ ^, ⁴ , Junjun Zhang ⁵ ^, ⁶ ^, ⁷ ^, ⁴ , Li Wang ¹ ^, ² ^, ³ ^, ⁴ , Chunyan Wu ¹ ^, ² ^, ³ ^, ⁴ , Jun Xu ¹ ^, ² ^, ³ ^, ⁴

Publication date (Electronic): 2016

Journal: Chemical Communications

Publisher: Royal Society of Chemistry (RSC)

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Abstract

A top-down strategy to synthesize wurtzite CZTS nanocrystals with diameters of ∼5 nm evolved from Cu ₂O nanocubes is developed.

Abstract

Green synthesis of metastable wurtzite Cu ₂ZnSnS ₄ nanocrystals through a top-down synthetic strategy is presented. Formation mechanisms associated with Kirkendall and etching effects are illustrated in detail. The nanocrystals exhibit remarkable photoluminescence properties at room temperature.

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High-efficiency solar cell with Earth-abundant liquid-processed absorber.

Teodor K. Todorov, Kathleen Reuter, David Mitzi (2010)

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Fabrication of 7.2% efficient CZTSSe solar cells using CZTS nanocrystals.

Q Guo, Hanne B. Walker, Wei Yang … (2010)

Earth abundant copper-zinc-tin-chalcogenide (CZTSSe) is an important class of material for the development of low cost and sustainable thin film solar cells. The fabrication of CZTSSe solar cells by selenization of CZTS nanocrystals is presented. By tuning the composition of the CZTS nanocrystals and developing a robust film coating method, a total area efficiency as high as 7.2% under AM 1.5 illumination and light soaking has been achieved.