In-situ growth of titanium alkoxide network encapsulated perovskite nanograin for robust light emission  

作　　者：Si Peng Yunlong Liu Ying Liu Hao Wang Mingyu Ma Wenjia Zhou Ruiqi Xu Xianyuan Jiang Danni Yu Wei Zhou Yingbo Zhao Zhijun Ning 

机构地区：[1]School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China [2]State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science,Shanghai Institute of Optics and Fine Mechanics(SIOM),Chinese Academy of Sciences(CAS),Shanghai 201800,China [3]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [4]State Key Laboratory of Materials for Integrated Circuits,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China [5]Shanghai Key Laboratory of High-resolution Electron Microscopy,ShanghaiTech University,Shanghai 201210,China [6]State Key Laboratory of Advanced Medical Materials and Devices,ShanghaiTech University,Shanghai 201210,China

出　　处：《Nano Research》2025年第4期435-442,共8页纳米研究(英文版)

基　　金：the National Key Research and Development Program of China(No.2021YFA0715502);the National Natural Science Foundation of China(Nos.61935016,92056119,22175118,and 62004125);Science and Technology Commission of Shanghai Municipality(Nos.20JC1415800 and 20XD1402500);the Double First-Class Initiative Fund of ShanghaiTech University and Open Research Fund of China National Key Laboratory of Materials for Integrated Circuits(No.NKLJC-K2023-04);support from Analytical Instrumentation Center(#SPST-AIC10112914),SPST,ShanghaiTech University;the support from Centre for High-resolution Electron Microscopy(ChEM),SPST,ShanghaiTech University under contract NO.EM02161943.

摘　　要：The construction of a thin stable shell to encapsulate perovskite with effective carrier transport is a promising strategy to fabricate highly efficient and stable perovskite based optoelectronic devices.However,it is generally difficult to control the thickness and location of the encapsulating materials,ideally on perovskite grains.In this work,we developed a one-step method for the growth of titanium alkoxide networks in-situ in perovskite film forming an encapsulating layer on perovskite nanograin homogeneously.The thin encapsulating network brings much enhanced stability and allows effective carrier transport simultaneously.Light emitting diode based on this composite shows much enhanced stability under continuous operation.

关 键 词：PEROVSKITE light-emitting diodes metal organic framework titanium-oxo cluster 

分 类 号：O469[理学—凝聚态物理] TB3[理学—电子物理学]