DC Field | Value | Language |
---|---|---|
dc.contributor.author | Koo, Bonhyeong | ko |
dc.contributor.author | Nam, Sung-Wook | ko |
dc.contributor.author | Haight, Richard | ko |
dc.contributor.author | Kim, Seon Cheol | ko |
dc.contributor.author | Oh, Seungtaeg | ko |
dc.contributor.author | Cho, Minhyung | ko |
dc.contributor.author | Oh, Jihun | ko |
dc.contributor.author | Lee, Jeong Yong | ko |
dc.contributor.author | Ahn, Byung Tae | ko |
dc.contributor.author | Shin, Byungha | ko |
dc.date.accessioned | 2017-04-17T07:29:24Z | - |
dc.date.available | 2017-04-17T07:29:24Z | - |
dc.date.created | 2017-04-10 | - |
dc.date.created | 2017-04-10 | - |
dc.date.issued | 2017-02 | - |
dc.identifier.citation | ACS APPLIED MATERIALS & INTERFACES, v.9, no.6, pp.5279 - 5287 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | http://hdl.handle.net/10203/223290 | - |
dc.description.abstract | We report on the photoelectrochemical (PEC) performance and stability of Cu(In,Ga)Se-2 (CIGS)-based photocathodes for photocatalytic hydrogen evolution from water. Various functional overlayers, such as CdS, TiO2, ZnxSnyOz, and a combination of the aforementioned, were applied on the CIGS to improve the performance and stability. We identified that the insertion of TiO2 overlayer on p-CIGS/n-buffer layers significantly improves the PEC performance. A multilayered photocathode consisting of CIGS/CdS/TiO2/Pt exhibited the best current-potential characteristics among the tested photocathodes, which demonstrates a power-saved efficiency of 2.63%. However, repeated linear sweep voltammetry resulted in degradation of performance. In this regard, we focused on the PEC durability issues through in-depth chemical characterization that revealed the degradation was attributed to atomic redistribution of elements constituting the photocathode, namely, in-diffusion of Pt catalysts, out-diffusion of elements from the CIGS, and removal of the metal-oxide layers; the best-performing CIGS/CdS/TiO2/Pt photocathode retained its initial performance until the TiO2 overlayer was removed. It was also found that the durability of CIGS photocathodes with a TiO2-coated metal-oxide buffer layer such as ZnxSnyOz was better than those with a TiO2-coated CdS, and the degradation mechanism was different, suggesting that the stability of a CIGS-based photocathode can be improved by careful design of the structure. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | SOLAR HYDROGEN-PRODUCTION | - |
dc.subject | THIN-FILMS | - |
dc.subject | WATER REDUCTION | - |
dc.subject | CELLS | - |
dc.subject | EVOLUTION | - |
dc.subject | CIGS | - |
dc.subject | CDS | - |
dc.subject | TIO2 | - |
dc.subject | SI | - |
dc.subject | PHOTOANODES | - |
dc.title | Tailoring Photoelectrochemical Performance and Stability of Cu(In,Ga)Se-2 Photocathode via TiO2-Coupled Buffer Layers | - |
dc.type | Article | - |
dc.identifier.wosid | 000394481800027 | - |
dc.identifier.scopusid | 2-s2.0-85013078173 | - |
dc.type.rims | ART | - |
dc.citation.volume | 9 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | 5279 | - |
dc.citation.endingpage | 5287 | - |
dc.citation.publicationname | ACS APPLIED MATERIALS & INTERFACES | - |
dc.identifier.doi | 10.1021/acsami.6b15168 | - |
dc.contributor.localauthor | Oh, Jihun | - |
dc.contributor.localauthor | Lee, Jeong Yong | - |
dc.contributor.localauthor | Ahn, Byung Tae | - |
dc.contributor.localauthor | Shin, Byungha | - |
dc.contributor.nonIdAuthor | Nam, Sung-Wook | - |
dc.contributor.nonIdAuthor | Haight, Richard | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | solar water splitting | - |
dc.subject.keywordAuthor | photoelectrochemical hydrogen evolution | - |
dc.subject.keywordAuthor | Cu(In,Ga)Se-2 photocathode | - |
dc.subject.keywordAuthor | stability | - |
dc.subject.keywordAuthor | overlayer | - |
dc.subject.keywordPlus | SOLAR HYDROGEN-PRODUCTION | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | WATER REDUCTION | - |
dc.subject.keywordPlus | CELLS | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordPlus | CIGS | - |
dc.subject.keywordPlus | CDS | - |
dc.subject.keywordPlus | TIO2 | - |
dc.subject.keywordPlus | SI | - |
dc.subject.keywordPlus | PHOTOANODES | - |
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