Ambipolar organic phototransistors based on 6,6′-dibromoindigo

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...

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Bibliographic Details
Published in:RSC advances 2018-01, Vol.8 (27), p.14747-14752
Main Authors: Kim, Hyoeun, Kim, Gyoungsik, Song, Inho, Lee, Jungho, Abdullah, Hanum, Yang, Changduk, Oh, Joon Hak
Format: Article
Language:English
Subjects:
Chemistry
Light
Luminous intensity
Optoelectronics
Phototransistors
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Summary: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 of 6-BrIG , and introduces this material as an ecofriendly candidate for optoelectronic applications. Ambipolar phototransistors with a natural pigment, 6,6′-dibromoindigo ( 6-BrIG or tyrian purple), have been investigated.
ISSN:2046-2069
2046-2069
DOI:10.1039/c8ra02346h