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Broadband photomultiplication-type polymer photodetectors and its application in light-controlled circuit

Broadband photomultiplication-type polymer photodetectors and its application in light-controlled circuit

作     者:Ming Liu Qunping Fan Kaixuan Yang Zijin Zhao Xingchao Zhao Zhengji Zhou Jian Zhang Francis Lin Alex K.-Y.Jen Fujun Zhang 

作者机构:Key Laboratory of Luminescence and Optical InformationMinistry of EducationBeijing Jiaotong UniversityBeijing 100044China Department of ChemistryCity University of Hong KongHong Kong 999077China State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049China Key Lab for Special Functional MaterialsMinistry of EducationNational and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technologyand School of MaterialsHenan UniversityKaifeng 475004China Guangxi Key Laboratory of Information MaterialsSchool of Material Science and TechnologyGuilin University of Electronic TechnologyGuilin 541004China Department of Materials Science and EngineeringCity University of Hong KongHong Kong 999077China Department of Materials Science and EngineeringUniversity of WashingtonWashington 98195-2120United States Hong Kong Institute for Clean EnergyCity University of Hong KongHong Kong 999077China 

出 版 物:《Science China Chemistry》 (中国科学(化学英文版))

年 卷 期:2022年第65卷第8期

页      面:1642-1649页

核心收录:

学科分类:08[工学] 0805[工学-材料科学与工程(可授工学、理学学位)] 080502[工学-材料学] 0803[工学-光学工程] 

基  金:supported by the Fundamental Research Funds for the Central Universities(2021YJS176) the National Natural Science Foundation of China(61975006,62075155,62175011) the Postdoctoral Innovative Talent Support Program(BX20200042) the China Postdoctoral Science Foundation(2020M680327) 

主  题:polymer photodetectors photomultiplication external quantum efficiency broadband 

摘      要:Photomultiplication-type polymer photodetectors(PM-PPDs)were achieved with polymer P3HT as donor and PY3Se-1V as acceptor based on structure of ITO/PEDOT:PSS/active layer/*** optimal weight ratio of P3HT to PY3Se-1V is about 100:*** of isolated electron traps are formed with PY3Se-1V surrounded by P3HT due to rather less content of PY3Se-1V in active layers and about 0.94 e V energy offset between the lowest unoccupied molecular orbitals(LUMO)of P3HT and *** optimal PM-PPDs exhibit broad spectral response from 350 to 950 nm and external quantum efficiency(EQE)values of68,200%at 360 nm,26,400%at 630 nm and 19,500%at 850 nm under-15 V *** working mechanism of PM-PPDs is attributed to the interfacial trap-assisted hole tunneling injection from external *** performance of PM-PPDs can be further improved by incorporating appropriate PMBBDT with high hole mobility as the third *** EQE values of optimal ternary PM-PPDs are increased to 105,000%at 360 nm,40,000%at 630 nm and 31,800%at 850 nm under-15 V bias,benefiting from the enhanced hole transport in ternary active *** optimal ternary PM-PPDs were successfully applied in a light-controlled circuit to turn on or turn off light emitting diode(LED).

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