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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 loaded PbS/Mn-doped CdS quantum dots for dual application in solar-to-electrical and solar-to-chemical energy conversion

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dc.contributor.authorKim, Jae-Yupko
dc.contributor.authorJang, Youn Jeongko
dc.contributor.authorPark, Jongwooko
dc.contributor.authorKim, Jeehyeko
dc.contributor.authorKang, Jin Sooko
dc.contributor.authorChung, Dong Youngko
dc.contributor.authorSung, Yung-Eunko
dc.contributor.authorLee, Changheeko
dc.contributor.authorLee, Jae Sungko
dc.contributor.authorKo, Min Jaeko
dc.date.available2018-03-29T08:37:09Z-
dc.date.created2018-03-27ko
dc.date.issued201807ko
dc.identifier.citationAPPLIED CATALYSIS B-ENVIRONMENTAL, v.227, no., pp.409 - 417ko
dc.identifier.issn0926-3373ko
dc.identifier.urihttp://scholarworks.unist.ac.kr/handle/201301/23883-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0926337318300572?via%3Dihubko
dc.description.abstractAmong the various renewable sources of energy, solar energy conversion systems have been regarded as a promising way to satisfy the growing energy demand. For superior solar energy conversion performance, it is important to utilize efficient photosensitizers that have excellent light-harvesting capability. In this regard, quantum dots (QDs) are promising photosensitizer candidates owing to their high absorption coefficient, band gap tunability, and potential multiple exciton generation. Here, we report an effective and straightforward approach to improve the loadings of nanocomposite PbS/CdS QDs in a mesoporous electrode, for highly efficient solar energy conversion. By controlling the surface charge of TiO2 during the successive ionic layer adsorption and reaction process, both the PbS and CdS QD loadings are distinctly increased, leading to a highly enhanced light-harvesting capability of the photoelectrodes. This enhancement is effectively applied not only for solar-to-electrical but also for solar-to-chemical energy conversion, resulting in a ∼33% increased conversion efficiency of the QD solar cells and an unprecedented photocurrent of 22.1 mA/cm2 (at 0.6 V vs. RHE) for hydrogen production from photoelectrochemical water splitting. These results provide significant insight into the application of QD photosensitizers in solar energy conversion.ko
dc.languageENGko
dc.publisherELSEVIER SCIENCE BVko
dc.subjectQuantum dotsko
dc.subjectPhotoelectrochemical water splittingko
dc.subjectSolar cellsko
dc.subjectQuantum dot loadingko
dc.titleHighly loaded PbS/Mn-doped CdS quantum dots for dual application in solar-to-electrical and solar-to-chemical energy conversionko
dc.typeARTICLEko
dc.identifier.pid1066null
dc.identifier.rimsid30039ko
dc.identifier.scopusid2-s2.0-85042942205ko
dc.identifier.wosid000428491000041ko
dc.type.rimsAko
dc.identifier.doihttp://dx.doi.org/10.1016/j.apcatb.2018.01.041ko
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