Nonlocal interaction enhanced biexciton emission in large CsPbBr_(3) nanocrystals
作者机构：MIIT Key Laboratory for Low‑Dimensional Quantum Structure and DevicesSchool of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic SystemsSchool of PhysicsBeijing Institute of TechnologyBeijing 100081China Key Laboratory of Excited‑State Materials of Zhejiang ProvinceDepartment of ChemistryZhejiang UniversityHangzhou 310027China
出 版 物：《eLight》 (e光学（英文）)
年 卷 期：2023年第3卷第1期
页 面：169-176页
学科分类：080903[工学-微电子学与固体电子学] 07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
基 金：supported by Beijing Natural Science Foundation(Z210018,H.Z.) National Natural Science Foundation of China(12074037,Y.Z.)
主 题：quantum interaction exponential
摘 要：Biexciton emission in quantum dots is an efficient way to generate entangled photon pairs,which are key resources in quantum *** with epitaxial grown quantum dots,chemically synthesized colloidal quantum dots show advantages of tunable wavelength and easy integration to realize quantum light ***,biexciton efficiency of colloidal quantum dots has been limited by Auger *** this paper,we reported nonlocal interaction enhanced biexciton emission with efficiency up to 80% in large perovskite nanocrystals(20 nm).The nonlocal interaction between carriers and excitons leads to the abnormal exponential decrease of Auger recombination with volume in large nanocrystals,which distinguishes with the linear scaling in small *** an exponential decrease of Auger recombination results in long lifetime of biexcitons,responsible for the required high biexciton *** discovery of nonlocal effects in large semiconductor nanocrystals provides new strategies to achieve high efficiency multiple excitons for quantum optics and energy conversation applications.
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