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dc.contributor.authorHah, Dooyoung
dc.date.accessioned2021-01-26T09:06:48Z
dc.date.available2021-01-26T09:06:48Z
dc.date.issued2020en_US
dc.identifier.issn1559-128X
dc.identifier.issn2155-3165
dc.identifier.otherPubMed ID: 33104546
dc.identifier.urihttps://doi.org/10.1364/AO.400107
dc.identifier.urihttps://hdl.handle.net/20.500.12573/489
dc.descriptionResearch fund of Abdullah Gul University (FOA-2016-49).en_US
dc.description.abstractOrganic solar cells are attractive for various applications with their flexibility and low-cost manufacturability. In order to increase their attractiveness in practice, it is essential to improve their energy conversion efficiency. In this work, semi-cylindrical-shell-shaped structures are proposed as one of the approaches, aiming at absorption enhancement in an organic solar cell. Poly(3-hexylthiophene-2,5-diyl) blended with indene-C60 bisadduct (P3HT:ICBA) is considered as the active layer. Light coupling to the guided modes and a geometrical advantage are attributed to this absorption enhancement. Finite-difference time-domain methods and finite element analysis are used to examine the absorption spectra for two types of devices, i.e., a debossed type and an embossed type. It is shown that absorption enhancement increases as the radius of the cylinder increases, but reaches a saturation at about 4-mu m radius. The average absorption enhancement with an active layer thickness of 200 nm and radius of 4 mu m, and for incidence angles between 0 degrees and 70 degrees, is found as 51%-52% for TE-polarized input and as 30%-33% for TM-polarized input when compared to a flat structure. Another merit of the proposed structures is that the range of incidence angles where the integrated absorption is at the level of the normal incidence is significantly broadened, reaching 70 degrees-80 degrees. This feature can be highly useful especially when organic solar cells are to be placed around a round object. The study results also exhibit that the proposed devices bear broadband absorption characteristics. (C) 2020 Optical Society of Americaen_US
dc.description.sponsorshipAbdullah Gul University FOA-2016-49en_US
dc.language.isoengen_US
dc.publisherOPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USAen_US
dc.relation.isversionof10.1364/AO.400107en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPHOTOVOLTAICS;en_US
dc.subjectSCATTERINGen_US
dc.subjectWAVE-GUIDEen_US
dc.subjectBROAD-BANDen_US
dc.subjectLIGHT-TRAPPING ENHANCEMENTen_US
dc.titleAbsorption enhancement by semi-cylindrical-shell-shaped structures for an organic solar cell applicationen_US
dc.typearticleen_US
dc.contributor.departmentAGÜ, Mühendislik Fakültesi, Elektrik - Elektronik Mühendisliği Bölümüen_US
dc.contributor.authorID0000-0002-1290-0597en_US
dc.identifier.volumeVolume: 59en_US
dc.identifier.issue_28en_US
dc.identifier.startpage8645en_US
dc.identifier.endpage8652en_US
dc.relation.journalAPPLIED OPTICSen_US
dc.relation.publicationcategoryMakale - Uluslararası - Editör Denetimli Dergien_US


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