Organic X-Ray Image Sensors Using a Medium Bandgap Polymer Donor with Low Dark Current

作     者：Jong-Woon Ha Seung Hun Eom Bo Kyung Cha Seyeong Song Hyeong Ju Eun Jong H.Kim Jong Mok Park BongSoo Kim Byoungwook Park Seo-Jin Ko Sung Cheol Yoon Changjin Lee In Hwan Jung Do-Hoon Hwang Jong-Woon Ha;Seung Hun Eom;Bo Kyung Cha;Seyeong Song;Hyeong Ju Eun;Jong H.Kim;Jong Mok Park;BongSoo Kim;Byoungwook Park;Seo-Jin Ko;Sung Cheol Yoon;Changjin Lee;In Hwan Jung;Do-Hoon Hwang

作者机构：Department of ChemistryChemistry Institute for Functional MaterialsPusan National UniversityBusan 46241Korea Division of Advanced Energy Materials Research CenterKorea Research Institute of Chemical Technology(KRICT)Daejeon 34114Korea Electro-Medical Device Research CenterKorea Electrotechnology Research Institute(KERI)Ansan 15588Korea Graduate School of Carbon NeutralitySchool of Energy and Chemical EngineeringUlsan National Institute of Science and Technology(UNIST)Ulsan 44919Korea Department of Molecular Science and TechnologyAjou UniversitySuwon 16449Korea Research Center for Advanced Specialty ChemicalsKorea Research Institute of Chemical TechnologyUlsan 44412Korea Department of ChemistryUlsan National Institute of Science and Technology(UNIST)Ulsan 44919Korea Department of Organic and Nano EngineeringHuman-Tech Convergence ProgramHanyang University222 Wangsimni-roSeongdong-guSeoul 04763Korea 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2024年第7卷第6期

页      面：230-237页

核心收录：

学科分类：080202[工学-机械电子工程] 08[工学] 0802[工学-机械工程] 

基　　金：granted by the Korea Research Institute of Chemical Technology(KRICT)of the Republic of Korea(No.2422-10) the National Research Foundation(NRF)(NRF-2021R1C1C2007445 and RS-2023-00280495)of Republic of Korea 

主　　题：low dark current low detection limit organic photodetector printable X-ray 

摘      要：The development of portable X-ray detectors is necessary for diagnosing fractures in unconscious patients in emergency ***,this is quite challenging because of the heavy weight of the scintillator and silicon *** weight and thickness of X-ray detectors can be reduced by replacing the silicon layer with an organic *** study presents a novel bithienopyrroledione-based polymer donor that exhibits excellent photodetection properties even in a thick photoactive layer(~700 nm),owing to the symmetric backbone and highly soluble molecular structure of *** ability of bithienopyrroledione-based polymer donor to strongly suppress the dark current density(Jd~10−10 A cm^(−2))at a negative bias(−2.0 V)while maintaining high responsivity(R=0.29 A W−1)even at a thickness of 700 nm results in a maximum shot-noise-limited specific detectivity of D_(sh)^(*)=2.18×10^(13)Jones in the organic *** organic photodetectors are developed by slot-die coating for use in X-ray detectors,which exhibit D_(sh)^(*)=2.73×10^(12)Jones with clear rising(0.26 s)and falling(0.29 s)response times upon X-ray *** reliability is also proven by linear response of the X-ray detector,and the X-ray detection limit is 3 mA.