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  • Highly sensitive phototransistor with crystalline microribbons from new π-extended pyrene derivative via solution-phase self-assembly.

Highly sensitive phototransistor with crystalline microribbons from new π-extended pyrene derivative via solution-phase self-assembly.

Chemical communications (Cambridge, England) (2011-06-18)
Youn Sun Kim, Suk Young Bae, Kyung Hwan Kim, Tae Wan Lee, Jung A Hur, Mai Ha Hoang, Min Ju Cho, Sung-Jin Kim, Youngmee Kim, Minsik Kim, Kwangyeol Lee, Suk Joong Lee, Dong Hoon Choi
PMID21681302
ABSTRACT

A new pyrene-cored π-conjugated molecule has been synthesized through Sonogashira coupling reaction. The single-crystalline microribbon-based FET exhibited the highest mobility of 0.7 cm(2) V(-1) s(-1) (I(on)/I(off) > 10(6)). Single-crystalline microribbons were employed to operate in an organic phototransistor (OPT) under very low light intensity (I = 5.6 μW cm(-2)).