Colloidal synthesis of lead chalcogenide/lead chalcohalide core/shell nanostructures and structural evolution  

作　　者：Yang Liu Kunyuan Lu Yujie Zhu Xudong Hu Yusheng Li Guozheng Shi Xingyu Zhou Lin Yuan Xiang Sun Xiaobo Ding Irfan Ullah Muhammad Qing Shen Zeke Liu Wanli Ma 

机构地区：[1]Institute of Functional Nano&Soft Materials(FUNSOM),Joint International Research Laboratory of Carbon-Based Functional Materials and Devices,Soochow University,Suzhou 215123,China [2]Jiangsu Key Laboratory of Advanced Negative Carbon Technologies,Soochow University,Suzhou 215123,China [3]Faculty of Informatics and Engineering,University of Electro-Communications,Tokyo 182−8585,Japan

出　　处：《Journal of Semiconductors》2025年第4期38-44,共7页半导体学报(英文版)

基　　金：supported by the National Key Research and Development Program of China(Grant No.2022YFE0110300);the National Natural Science Foundation of China(Grant Nos.52372215,92163114,and 52202274);the Natural Science Foundation of Jiangsu Province of China(Grant No.BK20230504);the Special Fund for the"Dual Carbon"Science and Technology Innovation of Jiangsu province(Industrial Prospect and Key Technology Research program)(Grant Nos.BE2022023 and BE2022021);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(Grant No.21KJA430004);Gusu Innovation and Entre preneurship Leading Talent Program(Grant No.ZXL2022451);the China Postdoctoral Science Foundation(Grant No.2023M732523);supported by Suzhou Key Laboratory of Functional Nano&Soft Materials,Collaborative Innovation Center of Suzhou Nano Science&Technology,the 111 Project.

摘　　要：Lead chalcohalides(PbYX,X=Cl,Br,I;Y=S,Se)is an extension of the classic Pb chalcogenides(PbY).Constructing the heterogeneous integration with PbYX and PbY material systems makes it possible to achieve significantly improved optoelectronic performance.In this work,we studied the effect of introducing halogen precursors on the structure of classical PbS nanocrystals(NCs)during the synthesis process and realized the preparation of PbS/Pb_(3)S_(2)X_(2) core/shell structure for the first time.The core/shell structure can effectively improve their optical properties.Furthermore,our approach enables the synthesis of Pb_(3)S_(2)Br_(2) that had not yet been reported.Our results not only provide valuable insights into the heterogeneous integration of PbYX and PbY materials to elevate material properties but also provide an effective method for further expanding the preparation of PbYX material systems.

关 键 词：lead chalcohalides lead chalcogenides PbS nanocrystal core/shell structure Pb_(3)S_(2)X_(2)nanocrystal 

分 类 号：O469[理学—凝聚态物理]