The synthesis of Cu sub(2)Zn(Ge sub(x)Sn sub(1-x))Se sub(4) nanocrystals with tunable band gaps

Cu sub(2)Zn(Sn sub(1-x)Ge sub(x))Se sub( 4) (CZTGSe) nanocrystals with tunable band gaps have been synthesized via a hot-injection method. The band gaps of the nanocrystals were demonstrated to be linearly tuned from 1.33 to 1.63 eV by adjusting the composition parameter x of the Ge/(Ge + Sn) ratio...

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Published inCrystEngComm Vol. 15; no. 35; pp. 6942 - 6947
Main Authors Zong, Kai, Lu, SiHeng, Wang, Hao, Sun, YuXiu, Zheng, HuiJuan, Liu, JingBing, Yan, Hui
Format Journal Article
LanguageEnglish
Published 01.08.2013
Subjects
Devices
Energy gaps (solid state)
Germanium
Nanocrystals
Photovoltaic cells
Solar cells
Synthesis
Tin
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Summary:Cu sub(2)Zn(Sn sub(1-x)Ge sub(x))Se sub( 4) (CZTGSe) nanocrystals with tunable band gaps have been synthesized via a hot-injection method. The band gaps of the nanocrystals were demonstrated to be linearly tuned from 1.33 to 1.63 eV by adjusting the composition parameter x of the Ge/(Ge + Sn) ratio from 0.0 to 1.0. This indicates that the tunable band gap CZTGSe can be a potential substitute for Cu sub(2)ZnSnSe sub(4) (CZTSe) nanocrystal photovoltaic devices in the future.
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ISSN:1466-8033
DOI:10.1039/c3ce40953h