Ambipolar organic phototransistors based on 6,6'-dibromoindigo
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- Ambipolar organic phototransistors based on 6,6'-dibromoindigo
- Kim, Hyoeun; Kim, Gyoungsik; Song, Inho; Lee, Jungho; Abdullah, Hanum; Yang, Changduk; Oh, Joon Hak
- Issue Date
- ROYAL SOC CHEMISTRY
- RSC ADVANCES, v.8, no.27, pp.14747 - 14752
- 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.
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