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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Highly Efficient Photoelectrochemical Hydrogen Production Using Nontoxic CuIn1.5Se3 Quantum Dots with ZnS/SiO2 Double Overlayers

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dc.contributor.author Kim, Jeehye ko
dc.contributor.author Jang, Youn Jeong ko
dc.contributor.author Baek, Woonhyuk ko
dc.contributor.author Lee, A. Reum ko
dc.contributor.author Kim, Jae-Yup ko
dc.contributor.author Hyeon, Taeghwan ko
dc.contributor.author Lee, Jae Sung ko
dc.date.available 2022-01-21T00:14:40Z -
dc.date.created 2022-01-14 ko
dc.date.issued 2022-01 ko
dc.identifier.citation ACS APPLIED MATERIALS & INTERFACES, v.14, no.1, pp.603 - 610 ko
dc.identifier.issn 1944-8244 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/56888 -
dc.description.abstract Quantum dots (QDs) are a promising material for photoelectrochemical (PEC) hydrogen (H-2) production because of their attractive optical properties including high optical absorption coefficient, band-gap tunability, and potential multiple exciton generation. To date, QDs containing toxic elements such as Cd or Pb have been mainly investigated for PEC H-2 production, which cannot be utilized in practice because of the environmental issue. Here, we demonstrate a highly efficient type II heterojunction photoanode of nontoxic CuIn1.5Se3 (CISe) QDs and a mesoporous TiO2 film. In addition, ZnS/SiO2 double overlayers are deposited on the photoanodes to passivate surface defect sites on the CISe QDs, leading to the enhancement of both photocurrent density and photostability. Due to a combination of a wide light absorption range of the CISe QDs and the reduced interfacial charge recombination by the overlayers, a remarkable photocurrent density of 8.5 mA cm(-2) (at 0.5 VRHE) is obtained under 1 sun illumination, which is a record for the PEC sulfite oxidation based on nontoxic QD photoanodes. ko
dc.language 영어 ko
dc.publisher AMER CHEMICAL SOC ko
dc.title Highly Efficient Photoelectrochemical Hydrogen Production Using Nontoxic CuIn1.5Se3 Quantum Dots with ZnS/SiO2 Double Overlayers ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85122393708 ko
dc.identifier.wosid 000737995500001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1021/acsami.1c16976 ko
dc.identifier.url https://pubs.acs.org/doi/10.1021/acsami.1c16976 ko
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