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Shin, Tae Joo
UNIST Synchrotron Radiation Research Laboratory
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  • Synchrotron Radiation Application Researches

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Solution-processable all-small molecular bulk heterojunction films for stable organic photodetectors: near UV and visible light sensing

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dc.contributor.author Lee, Hyena -
dc.contributor.author Nam, Sungho -
dc.contributor.author Kwon, Hyunju -
dc.contributor.author Lee, Sooyong -
dc.contributor.author Kim, Jungnam -
dc.contributor.author Lee, Woongki -
dc.contributor.author Lee, Chulyeon -
dc.contributor.author Jeong, Jaehoon -
dc.contributor.author Kim, Hwajeong -
dc.contributor.author Shin, Tae Joo -
dc.contributor.author Kim, Youngkyoo -
dc.date.accessioned 2016-09-30T07:56:51Z -
dc.date.available 2016-09-30T07:56:51Z -
dc.date.created 2016-06-08 -
dc.date.issued 2015-02 -
dc.identifier.citation JOURNAL OF MATERIALS CHEMISTRY C, v.3, no.7, pp.1513 - 1520 -
dc.identifier.issn 2050-7526 -
dc.identifier.uri http://pubs.rsc.org/en/Content/ArticleLanding/2015/TC/C4TC02194K#!divAbstract -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/20521 -
dc.description.abstract We report stable organic photodetectors with all-small molecular bulk heterojunction (BHJ) sensing layers prepared using solutions of electron-donating and electron-accepting small molecules. As an electrondonating molecule, 2,5-bis(2-ethylhexyl)-3,6-bis(4'-methyl-[2,2'-bithiophen]-5-yl) pyrrolo[3,4-c] pyrrole-1,4(2H, 5H)-dione (EHTPPD-MT) was synthesized via a Stille coupling reaction, whereas [6,6]-phenyl-C-61-butyric acid methyl ester (PC61BM) was used as an electron-accepting component. The devices with the EHTPPD-MT: PC61BM BHJ layer could detect photons at a wavelength of 400-800 nm and exhibited a stable photoresponse under on/off modulation of near UV (405 nm) and visible (532 nm and 650 nm) light even at bias voltage conditions. The corrected responsivity reached similar to 175 mA W-1 for the near UV detection at -1 V. An extremely durable photoresponse was measured for the present devices (including flexible devices) under illumination with high intensity green light (133.4 mW cm(-2) at 532 nm) which is much stronger than standard sun light (100 mW cm(-2), white). The excellent stability has been attributed to the tiny EHTPPD-MT crystals, which are formed in the EHTPPD-MT: PC61BM layers during the coating processes -
dc.description.statementofresponsibility close -
dc.language ENG -
dc.publisher ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY -
dc.subject -
dc.title Solution-processable all-small molecular bulk heterojunction films for stable organic photodetectors: near UV and visible light sensing -
dc.type ARTICLE -
dc.identifier.scopusid 2-s2.0-84927748444 -
dc.identifier.wosid 000349756800013 -
dc.type.rims ART -
dc.identifier.doi 10.1039/c4tc02194k -
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