Lattice atom-bridged chemical bond interface facilitates charge transfer for boosted photoelectric response  

作　　者：Mingwang Liu Wenhong Yang Runshi Xiao Jinli Li Rong Tan Ying Qin Yuxuan Bai Lirong Zheng Liuyong Hu Wenling Gu Chengzhou Zhu 

机构地区：[1]State Key Laboratory of Green Pesticide,International Joint Research Center for Intelligent Biosensing Technology and Health,College of Chemistry,Central China Normal University,Wuhan 430079,China [2]Hubei Key Laboratory of Plasma Chemistry and Advanced Materials,Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials,Wuhan Institute of Technology,Wuhan 430205,China [3]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

出　　处：《National Science Review》2025年第3期211-220,共10页国家科学评论(英文版)

基　　金：supported by a start-up fund of Central China Normal University,the National Natural Science Foundation of China(22104114 and 22074049);the Natural Science Foundation of Hubei Province(2023AFB571);the Knowledge Innovation Program of Wuhan-Shuguang Project(2023020201020441);the Fundamental Research Funds for the Central Universities(CCNU22JC006);the Program of Introducing Talents of Discipline to Universities of China(111 program,B17019).

摘　　要：The construction of chemical bonds at heterojunction interfaces currently presents a promising avenue for enhancing photogenerated carrier interfacial transfer.However,the deliberate modulation of these interfacial chemical bonds remains a significant challenge.In this study,we successfully established a p-n junction composed of atomic-level Pt-doped CeO_(2)and 2D metalloporphyrins metal-organic framework nanosheets(Pt-CeO_(2)/CuTCPP(Fe)),which enables the realization of photoelectric enhancement by regulating the interfacial Fe-O bond and optimizing the built-in electric field.Atomic-level Pt doping in CeO_(2)leads to an increased density of oxygen vacancies and lattice mutation,which induces a transition in interfacial Fe-O bonds from adsorbed oxygen(Fe-OA)to lattice oxygen(Fe-O_(L)).This transition changes the interfacial charge flow pathway from Fe-OA-Ce to Fe-O_(L),effectively reducing the carrier transport distance along the atomic-level charge transport highway.This results in a 2.5-fold enhancement in photoelectric performance compared with the CeO_(2)/CuTCPP(Fe).Furthermore,leveraging the peroxidase-like activity of the p-n junction,we employed this functional heterojunction interface to develop a photoelectrochemical immunoassay for the sensitive detection of prostate-specific antigens.

关 键 词：photoelectrochemical sensing atomic doping p-n junction interfacial chemical bonds charge transfer 

分 类 号：O646[理学—物理化学]