Near-infrared-triggered photon upconversion tuning in all-inorganic cesium lead halide perovskite quantum dots

Nature Communications
Wei ZhengXueyuan Chen

Abstract

All-inorganic CsPbX3 (X = Cl, Br, and I) perovskite quantum dots (PeQDs) have shown great promise in optoelectronics and photovoltaics owing to their outstanding linear optical properties; however, nonlinear upconversion is limited by the small cross-section of multiphoton absorption, necessitating high power density excitation. Herein, we report a convenient and versatile strategy to fine tuning the upconversion luminescence in CsPbX3 PeQDs through sensitization by lanthanide-doped nanoparticles. Full-color emission with wavelengths beyond the availability of lanthanides is achieved through tailoring of the PeQDs bandgap, in parallel with the inherent high conversion efficiency of energy transfer upconversion under low power density excitation. Importantly, the luminescent lifetimes of the excitons can be enormously lengthened from the intrinsic nanosecond scale to milliseconds depending on the lifetimes of lanthanide ions. These findings provide a general approach to stimulate photon upconversion in PeQDs, thereby opening up a new avenue for exploring novel and versatile applications of PeQDs.

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Citations

Oct 12, 2018·Physical Chemistry Chemical Physics : PCCP·Chaojun LiJianrong Qiu
Mar 28, 2019·Angewandte Chemie·Zhongliang GongXueyuan Chen
Jan 16, 2020·Chemical Society Reviews·Zhichao ZengChunhua Yan
Mar 14, 2020·Angewandte Chemie
Aug 20, 2020·Nanoscale·Artiom SkripkaFiorenzo Vetrone
Jun 17, 2020·Chemical Society Reviews·Cheng-Hsin LuZhiqun Lin
Nov 19, 2020·Chemical Communications : Chem Comm·Xingwen ChengXueyuan Chen
Jan 13, 2021·Nature Communications·Longfei Ruan, Yong Zhang
May 14, 2021·Frontiers in Chemistry·Lili XieHuanghao Yang
Jun 18, 2021·ACS Nano·Amrita DeyLakshminarayana Polavarapu
Jul 14, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Hailin CheJun Lin
Sep 1, 2020·Journal of the American Chemical Society·Indranil RoyJ Fraser Stoddart
Mar 19, 2019·ACS Applied Materials & Interfaces·Ruiqian MengYu Tang
Jun 28, 2019·The Journal of Physical Chemistry Letters·Sarah WiegholdLea Nienhaus
Jan 16, 2019·The Journal of Physical Chemistry Letters·Xiyu LiHans Ågren

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Methods Mentioned

BETA
transmission
X-ray
FRET
biosensing
phosphorescence

Software Mentioned

RETU

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