Abstract

Green-emitting ${{\rm{CsPbBr}}_3}$ perovskite nanocrystals were synthesized by the modified hot-injection method using three different solvents. The produced nanocrystals showed a narrow green emission band centered at 515–520 nm with full width at half-maximum (FWHM) values of approximately 18–20 nm. The highest photoluminescence quantum yield (PLQY) was obtained for the nanocrystal sample synthesized using a paraffin liquid solvent, with a value of 70.1% under excitation at 450 nm. The ${{\rm{CsPbBr}}_3}$ nanocrystals film light-emitting diodes (LED) chip module showed a luminous efficacy of ${40.7}\;{\rm{lm/}}{{\rm{W}}_{\rm{rad}}}$. The white LED (WLED) with green ${{\rm{CsPbBr}}_3}$ and red ${\rm{CsPb}}{{\rm{I}}_3}$ nanocrystal films emitted bluish-white light with a high color rendering index of 89, and the luminous efficacy of the WLED reached ${16.3}\;{\rm{lm/}}{{\rm{W}}_{\rm{rad}}}$.

© 2020 Optical Society of America

Broadband femtosecond nonlinear optical properties of CsPbBr₃ perovskite nanocrystals

Katturi Naga Krishnakanth, Sudipta Seth, Anunay Samanta, and Soma Venugopal Rao
Opt. Lett. 43(3) 603-606 (2018)

Phase-selective synthesis of lead-free CsMnBr₃ and Cs₃MnBr₅ nanocrystals dependent on solvent concentration

Tae Wook Kang, Eun Jin Choi, Young Ji Park, Jonghee Hwang, Byungseo Bae, and Sun Woog Kim
Opt. Lett. 47(7) 1806-1809 (2022)

Improved performance of pure red perovskite light-emitting devices based on CsPb(Br_1-xI_x)₃ with variable content of iodine and bromine

Shuang Guo, Yue-Feng Liu, Yu-Shan Liu, Jing Feng, and Hong-Bo Sun
Opt. Lett. 45(10) 2724-2727 (2020)

Rapid room temperature synthesis of Mn-doped perovskite quantum dots for white-light-emitting diodes

Longwen Yang, Aochen Du, Xingke Zheng, Yun Ye, Enguo Chen, Sheng Xu, and Tailiang Guo
J. Opt. Soc. Am. B 41(3) 809-819 (2024)

Pure green emission self-crystallization CsPbBr₃ quantum dot glass with Ag⁺ doping for stable light-emitting devices

Yang Lu, Panpan Li, Wenqing Xie, Yongmin Duan, Shiqing Xu, and Junjie Zhang
Opt. Lett. 46(11) 2597-2600 (2021)