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dc.contributor.author이정호-
dc.date.accessioned2018-02-05T05:25:34Z-
dc.date.available2018-02-05T05:25:34Z-
dc.date.issued2015-04-
dc.identifier.citationJOURNAL OF POWER SOURCES, v. 279, Page. 151-156en_US
dc.identifier.issn0378-7753-
dc.identifier.issn1873-2755-
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S037877531500021X-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/35408-
dc.description.abstractAn externally biased overpotential is normally required for photoelectrochemically cleaving water molecules. Moreover, very few semiconductors exhibit the necessary performance for the efficient transfer of photon energy to the binding electrons of water molecules unless a suitable catalyst is present. Here, we present a catalyst-free photoelectrochemical (PEC) cell electrically coupled in series with a thermoelectric device, which is capable of utilizing the full solar spectrum by synergistically collecting photon and phonon energies. Thermodynamic overpotentials originally required for the PEC reaction were spontaneously offset by the thermovoltage, which adjusts the Fermi level of a counter-electrode. Using a catalyst-free Si photocathode of unbiased conditions, we achieved a photon-to-current efficiency of similar to 20% at an 56 degrees C temperature gradient by harnessing only solar energy. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.orgilicenses/by-nc-nd/4.0/).en_US
dc.description.sponsorshipThis research was supported by the Pioneer Research Center Program (No. 2009-0083007) and the grant (No. 2011-0028604) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning. This work was also supported by the New & Renewable Energy of the Korea Institute of Energy Technology Evaluation and Planning(KETEP) grant (No. 20123010010160) funded by the Korea government Ministry of Trade, Industry and Energy.en_US
dc.language.isoen_USen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.subjectPhotoelectrochemical cellen_US
dc.subjectWater splittingen_US
dc.subjectHydrogenen_US
dc.subjectThermovoltageen_US
dc.subjectHybrid deviceen_US
dc.subjectPHOTO-CATHODESen_US
dc.subjectEFFICIENCYen_US
dc.subjectCELLSen_US
dc.subjectELECTRODESen_US
dc.subjectREDUCTIONen_US
dc.subjectENERGYen_US
dc.titleCatalyst-free hydrogen evolution of Si photocathode by thermovoltage-driven solar water splittingen_US
dc.typeArticleen_US
dc.relation.volume279-
dc.identifier.doi10.1016/j.jpowsour.2015.01.020-
dc.relation.page151-156-
dc.relation.journalJOURNAL OF POWER SOURCES-
dc.contributor.googleauthorShin, SM-
dc.contributor.googleauthorJung, JY-
dc.contributor.googleauthorPark, MJ-
dc.contributor.googleauthorSong, JW-
dc.contributor.googleauthorLee, JH-
dc.relation.code2015001360-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF ENGINEERING SCIENCES[E]-
dc.sector.departmentDEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING-
dc.identifier.pidjungho-
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COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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