A regioregular donor–acceptor copolymer allowing a high gain–bandwidth product to be obtained in photomultiplication-type organic photodiodes. Issue 1 (18th November 2020)

• Record Type: Journal Article
• Authors: Kim, Juhee; So, Chan; Kang, Mingyun; Sim, Kyu Min; Lim, Bogyu; Chung, Dae Sung
• Is Part Of: Materials horizons. Volume 8:Issue 1(2021)
• Page Start: 276
• Page End: 283
• Publication Date: 2020-11-18
• Subjects: Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0mh01588a
• Languages: English
• ISSNs: 2051-6347

Abstract

Abstract : A newly synthesized regioregular donor polymer is used in photomultiplication-type organic photodiodes (PM-OPDs), and its regioregularity enables face-on orientation with a low trap density, leading to a high gain and fast response time in PM-OPDs. Abstract : Obtaining a photomultiplication-type organic photodiode with a high gain–bandwidth product is challenging. We show that a newly designed regioregular polymer enables the formation of a highly oriented face-on structure with a low trap density, leading to a high EQE and a fast response time. As a result, a gain–bandwidth product of over 4 × 10 5 Hz is achieved.