DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, Hyeon | - |
dc.contributor.author | Kim, Donghoon | - |
dc.contributor.author | Chu, Kanghyun | - |
dc.contributor.author | Park, Jucheol | - |
dc.contributor.author | Nam, Sang Yeol | - |
dc.contributor.author | Heo Seungyang | - |
dc.contributor.author | Yang, Chan-Ho | - |
dc.contributor.author | JANG, HYUN MYUNG | - |
dc.date.accessioned | 2018-05-02T06:19:33Z | - |
dc.date.available | 2018-05-02T06:19:33Z | - |
dc.date.created | 2018-01-08 | - |
dc.date.issued | 2018-01 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/40946 | - |
dc.description.abstract | Ferroelectric photovoltaics (FPVs) are being extensively investigated by virtue of switchable photovoltaic responses and anomalously high photovoltages of ∼104 V. However, FPVs suffer from extremely low photocurrents due to their wide band gaps (Eg). Here, we present a promising FPV based on hexagonal YbFeO3 (h-YbFO) thin-film heterostructure by exploiting its narrow Eg. More importantly, we demonstrate enhanced FPV effects by suitably exploiting the substrate-induced film strain in these h-YbFO-based photovoltaics. A compressive-strained h-YbFO/Pt/MgO heterojunction device shows ∼3 times enhanced photovoltaic efficiency than that of a tensile-strained h-YbFO/Pt/Al2O3 device. We have shown that the enhanced photovoltaic efficiency mainly stems from the enhanced photon absorption over a wide range of the photon energy, coupled with the enhanced polarization under a compressive strain. Density functional theory studies indicate that the compressive strain reduces Eg substantially and enhances the strength of d–d transitions. This study will set a new standard for determining substrates toward thin-film photovoltaics and optoelectronic devices. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | ACS Applied Materials & Interfaces | - |
dc.subject | Density functional theory | - |
dc.subject | Energy gap | - |
dc.subject | Ferrites | - |
dc.subject | Ferroelectric films | - |
dc.subject | Ferroelectricity | - |
dc.subject | Heterojunctions | - |
dc.subject | Iron compounds | - |
dc.subject | Optoelectronic devices | - |
dc.subject | Photons | - |
dc.subject | Substrates | - |
dc.subject | Thin films | - |
dc.subject | Ytterbium compounds | - |
dc.subject | Density functional theory studies | - |
dc.subject | Enhanced polarization | - |
dc.subject | Heterojunction devices | - |
dc.subject | Hexagonal ferrite | - |
dc.subject | Photo-voltaic efficiency | - |
dc.subject | Photovoltaic response | - |
dc.subject | Switchable | - |
dc.subject | Thin film photovoltaics | - |
dc.subject | Photovoltaic effects | - |
dc.title | Enhanced Switchable Ferroelectric Photovoltaic Effects in Hexagonal Ferrite Thin Films via Strain Engineering | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acsami.7b16700 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | ACS Applied Materials & Interfaces, v.10, no.2, pp.1846 - 1853 | - |
dc.identifier.wosid | 000423140400043 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 1853 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 1846 | - |
dc.citation.title | ACS Applied Materials & Interfaces | - |
dc.citation.volume | 10 | - |
dc.contributor.affiliatedAuthor | Han, Hyeon | - |
dc.contributor.affiliatedAuthor | Kim, Donghoon | - |
dc.contributor.affiliatedAuthor | JANG, HYUN MYUNG | - |
dc.identifier.scopusid | 2-s2.0-85040654097 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 1 | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | PERIPHERAL ARTERIAL-DISEASE | - |
dc.subject.keywordPlus | HEPATOCYTE GROWTH-FACTOR | - |
dc.subject.keywordPlus | GENE-THERAPY | - |
dc.subject.keywordPlus | IN-SITU | - |
dc.subject.keywordPlus | ANGIOGENESIS | - |
dc.subject.keywordPlus | EPIDEMIOLOGY | - |
dc.subject.keywordPlus | LIMB | - |
dc.subject.keywordPlus | MET | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
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