Efficient full-color emitting carbon-dot-based composite phosphors by chemical dispersion

Nanoscale
Mingye SunYoujin Zheng

Abstract

Realizing full-color emission plays a key role in exploring the luminescence mechanisms of carbon dots (CDots) and promoting the applications of CDots in light-emitting diodes (LEDs). Herein, a synthesis strategy for full-color emitting CDots was developed through the solvothermal reaction of citric acid and urea with a constant mass ratio but varying reactant concentrations in solvent. With the reactant concentrations increasing, a dual regulation mechanism including an enhanced nucleation growth process and subsequently increased C[double bond, length as m-dash]O/C[double bond, length as m-dash]N-related surface states should be responsible for the photoluminescence (PL) shift of CDots from blue to red. Relying on the hydrolyzation and condensation processes of 3-aminopropyltrimethoxysilane, a simple and universal method was developed by chemically dispersing the CDots into a cross-linked silica network on the surface of SiO2 nanoparticles to produce efficient full-color emitting SiO2/CDot composite phosphors with considerable PL quantum yields in the range of 30-60%. It was proved that the full-color emitting SiO2/CDot composite phosphors could be flexibly applied in packaging white LEDs, releasing pure white light at the Co...Continue Reading

References

Jun 15, 2006·Journal of the American Chemical Society·Ya-Ping SunSu-Yuan Xie
Sep 3, 2009·Journal of the American Chemical Society·Sheng-Tao YangYa-Ping Sun
Mar 8, 2012·Advanced Materials·Zheng XieChun-yan Liu
Nov 20, 2013·ACS Nano·Xiaoyu ZhangAndrey L Rogach
Oct 16, 2014·Chemical Society Reviews·Shi Ying LimZhiqiang Gao
Sep 15, 2016·Advanced Materials·Huijun YuTierui Zhang
Apr 6, 2017·Angewandte Chemie·Siyu LuBai Yang
Apr 13, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Di PengRenlong Liu
Mar 19, 2019·Chemical Society Reviews·Chao HuYa-Ping Sun
Jun 11, 2019·Advanced Science·Cheng-Long ShenChong-Xin Shan
Jul 25, 2019·Accounts of Chemical Research·Francesca ArcudiMaurizio Prato
Sep 13, 2019·Nanoscale·Zhenhui Kang, Shuit-Tong Lee

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