DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Lee, Doh Chang | - |
dc.contributor.advisor | 이도창 | - |
dc.contributor.author | Oh, Seungje | - |
dc.date.accessioned | 2021-05-11T19:35:19Z | - |
dc.date.available | 2021-05-11T19:35:19Z | - |
dc.date.issued | 2019 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=876071&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/283153 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2019.8,[viii, 38 p. :] | - |
dc.description.abstract | Photoelectrochemical water-splitting is widely studied as a complementary technology of the photovoltaics. Recently, $CuFeO_2$ (CFO) has been attracting attention as a promising photocathode material, due to its earth-abundancy and excellent optoelectronic property. However, its low photo-activity in hydrogen evolution reaction (HER) due to the charge trapping at the surface states is limiting its application. In this work, the manipulation of carrier pathway is attempted by a stepwise over-layer engineering to relieve the charge carrier trapping induced by the surface states, and facilitate the carrier dynamics over CFO based photocathodes. First, Amorphous $Ga_2O_3$ ($a-Ga_2O_3$) was incorporated as an intermediate layer to suppress the surface states and interfacial recombination. Lastly, the band edge alignment of the over-layers was controlled by In alloying on $a-In_2-xGa_xO_3$ as an intermediate layer, resulting in the formation of type II heterostructure with the cascading array of conduction band edge. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Photoelectrochemical water-splitting▼a$CuFeO_2$▼aheterostructure▼aphotocathode▼a$In_2-_xGa_xO_3$ | - |
dc.subject | 광전기화학▼a물분해▼a$CuFeO_2$▼a이종접합▼a광양극▼a$In_2-_xGa_xO_3$ | - |
dc.title | Heterostructure engineering of $CuFeO_2$-based photocathodes through conduction band edge level control of $In_{2-_x}Ga_xO_3$ | - |
dc.title.alternative | $In_{2-_x}Ga_xO_3$의 전도대 위치 조절을 통한 $CuFeO_2$ 기반 광양극의 이종접합 구조 제어 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :생명화학공학과, | - |
dc.contributor.alternativeauthor | 오승제 | - |
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