49.25% efficient cyan emissive sulfur dots via a microwave-assisted route

Zhe Hu; Hanqing Dai; Xian Wei; Danlu Su; Chang Wei; Yuanyuan Chen; Fengxian Xie; Wanlu Zhang; Ruiqian Guo; Songnan Qu

doi:10.1039/D0RA02778B

49.25% efficient cyan emissive sulfur dots via a microwave-assisted route†

Zhe Hu,^a Hanqing Dai,^b Xian Wei,^a Danlu Su,^a Chang Wei,^a Yuanyuan Chen,^a Fengxian Xie,^a Wanlu Zhang,^a Ruiqian Guo

*^ab and Songnan Qu*^c

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* Corresponding authors

^a Engineering Research Center of Advanced Lighting Technology, Ministry of Education, Institute for Electric Light Sources, Fudan University, Shanghai 200433, China
E-mail: rqguo@fudan.edu.cn

^b Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China

^c Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau 999078, P. R. China
E-mail: qusn@ciomp.ac.cn

Abstract

Cyan emissive sulfur dots with a record high photoluminescence (PL) quantum yield of 49.25% have been successfully prepared via a microwave-assisted top-down route. The PL enhancement induced by electrostatic repulsion of sulfite groups and steric hindrance of polyethylene glycol 400 (PEG-400) were investigated for the first time.

RSC Advances

49.25% efficient cyan emissive sulfur dots via a microwave-assisted route†

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49.25% efficient cyan emissive sulfur dots via a microwave-assisted route

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