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

RSC Adv. 2020 May 4;10(29):17266-17269. doi: 10.1039/d0ra02778b. eCollection 2020 Apr 29.

Authors

Zhe Hu¹, Hanqing Dai², Xian Wei¹, Danlu Su¹, Chang Wei¹, Yuanyuan Chen¹, Fengxian Xie¹, Wanlu Zhang¹, Ruiqian Guo^{1

2}, Songnan Qu³

Affiliations

¹ Engineering Research Center of Advanced Lighting Technology, Ministry of Education, Institute for Electric Light Sources, Fudan University Shanghai 200433 China [email protected].
² Institute of Future Lighting, Academy for Engineering and Technology, Fudan University Shanghai 200433 China.
³ 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 [email protected].

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.