Ambipolar organic phototransistors based on 6, 6′-dibromoindigo. Issue 27 (19th April 2018)

• Record Type: Journal Article
• Authors: Kim, Hyoeun; Kim, Gyoungsik; Song, Inho; Lee, Jungho; Abdullah, Hanum; Yang, Changduk; Oh, Joon Hak
• Is Part Of: RSC advances. Volume 8:Issue 27(2018)
• Page Start: 14747
• Page End: 14752
• Publication Date: 2018-04-19
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra02346h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Ambipolar phototransistors with a natural pigment, 6, 6′-dibromoindigo (6-BrIG or tyrian purple), have been investigated. Abstract : Ambipolar organic phototransistors were fabricated using a natural pigment 6, 6′-dibromoindigo (6-BrIG ) as the active channel. These phototransistors yielded significantly enhanced currents upon light illumination with photoresponsivities and external quantum efficiencies as high as 10.3 A W −1 and 2437% for the n-channel, and 55.4 mA W −1 and 13.1% for the p-channel, respectively. In addition, simple inverter complementary circuits were fabricated by integrating two ambipolar phototransistors. Channel current was dependent on light intensity and voltage bias. This study provides a basis for an in-depth understanding of the optoelectronic characteristics of6-BrIG, and introduces this material as an ecofriendly candidate for optoelectronic applications.