41 0

Full metadata record

DC FieldValueLanguage
dc.contributor.author박희준-
dc.date.accessioned2019-08-26T01:35:49Z-
dc.date.available2019-08-26T01:35:49Z-
dc.date.issued2019-01-
dc.identifier.citationORGANIC ELECTRONICS , v.64 , Page. 274-279en_US
dc.identifier.issn1566-1199-
dc.identifier.issn1878-5530-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S1566119918305524?via%3Dihub-
dc.identifier.urihttp://repository.hanyang.ac.kr/handle/20.500.11754/109908-
dc.description.abstractNear-infrared (NIR) photodetectors sensitive to 860 nm light were fabricated through a solution process using two different conjugated polymers (CPs) that share a similar conjugated backbone consisting of a diketo-pyrrolopyrrole (DPP) moiety. The two CPs had a comparable conjugated nature, but their detection capabilities were significantly different depending on the applied linker units, namely thiophene for PDPP-T and fluorinated thiophene for PDPP-FBT. First, we revealed that employing an additive during active film preparation was beneficial for achieving an optimum film morphology for both CPs, which could suppress dark current and provide enhanced detectivity. In addition, when a highly electronegative fluorine atom, which induces a surface dipole, was introduced into the conjugated skeleton, it was clearly demonstrated via transient photovoltage measurements that the charge recombination time was lengthened, which implies an increase in the probability of charge extraction in actual devices by suppressing charge recombination. Thus, PDPP-FBT exhibited higher external quantum efficiency and responsivity across all wavelengths. Our results indicated that the management of both film morphology and surface dipoles of CPs are equally important for achieving high detectivity and responsivity in organic NIR photodetectors.en_US
dc.description.sponsorshipThis work was supported by the Industrial Strategic Technology Development Program (10077462) and the Industrial Fundamental Technology Development Program (10063045) funded by the Ministry of Trade, Industry & Energy (MOTIE) of Korea. This work was also supported by the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education (No. 2018R1D1A1B07047645). This work was partially supported by the GRRC program of Gyeonggi province (GRRC AJOU 2016B03, Photonics-Medical Convergence Technology Research Center).en_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.subjectNear-infrared photodetectoren_US
dc.subjectConjugated polymersen_US
dc.subjectBulk heterojunctionen_US
dc.subjectMorphologyen_US
dc.subjectCharge recombinationen_US
dc.subjectDark currenten_US
dc.titleMorphology and Charge Recombination Effects on the Performance of Near-Infrared Photodetectors based on Conjugated Polymersen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.orgel.2018.10.037-
dc.relation.journalORGANIC ELECTRONICS-
dc.contributor.googleauthorLee, Dae Woon-
dc.contributor.googleauthorKang, Yeongkwon-
dc.contributor.googleauthorJo, Bong Hyun-
dc.contributor.googleauthorJeon, Gyeong G.-
dc.contributor.googleauthorPark, Jaehong-
dc.contributor.googleauthorYoon, Sang Eun-
dc.contributor.googleauthorZheng, Jian-
dc.contributor.googleauthorAhn, Tae Kyu-
dc.contributor.googleauthorPark, Hui Joon-
dc.contributor.googleauthorKim, Bong-Gi-
dc.relation.code2019003014-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF ORGANIC AND NANO ENGINEERING-
dc.identifier.pidhuijoon-
dc.identifier.researcherIDJ-6839-2012-
dc.identifier.orcidhttps://orcid.org/0000-0003-4607-207X-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE