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dc.contributor.author이정호-
dc.date.accessioned2023-05-25T01:06:06Z-
dc.date.available2023-05-25T01:06:06Z-
dc.date.issued2012-06-
dc.identifier.citationJournal of Physical Chemistry C, v. 116, NO. 23, Page. 12409-12414-
dc.identifier.issn1932-7447;1932-7455-
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/jp301683qen_US
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/181378-
dc.description.abstractIntroducing a ZnSe quantum dot (QD) layer over silicon nanowire (Si NW) solar cells considerably enhances external quantum efficiency (EQE) over broadband wavelengths. This is attributed to the combination of two major benefits of ZnSe QDs: superior light trapping and photon down-conversion. The integration of ZnSe QDs on the Si NW solar cell significantly reduces Fresnel reflection at the silicon/air interface because the refractive index of ZnSe QDs falls between those of Si and air. As a result, the refractive index mismatch at the interface can be alleviated. This decreases the Si NW length required for obtaining superior light absorption over 90%, which consequently leads to a substantial reduction in surface recombination loss. A remarkable enhancement of similar to 30% in EQE around the absorption maximum of ZnSe QDs reveals that photon down-conversion by ZnSe QDs significantly contributed to EQE enhancement in a short-wavelength region. Our Si NW/ZnSe QDs hybrid solar cell showed nearly 13% improvement in power conversion efficiency compared to that of a bare Si NW counterpart, highlighting the feasibility of thin-layered semiconductor nanoparticles as a booster for highly efficient Si solar cells.-
dc.description.sponsorshipThis work was supported by the Pioneer Research Center Program through the National Research Foundation of Korea (NRF, No. 2011-0001646) and by the NRF grant (No. 2011-0028604) funded by the Ministry of Education, Science, and Technology (MEST). This work was also supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Ministry of Knowledge Economy, Republic of Korea (No. 20104010100620).-
dc.languageen-
dc.publisherAmerican Chemical Society-
dc.subjectDOWNCONVERSION-
dc.subjectSILICON NANOWIRE-
dc.subjectNANOCRYSTALS-
dc.subjectOPTICAL-ABSORPTION-
dc.subjectDEVICES-
dc.subjectEFFICIENCY-
dc.subjectARRAYS-
dc.subjectLAYERS-
dc.titleImproved Photovoltaic Performance of Si Nanowire Solar Cells Integrated with ZnSe Quantum Dots-
dc.typeArticle-
dc.relation.no23-
dc.relation.volume116-
dc.identifier.doi10.1021/jp301683q-
dc.relation.page12409-12414-
dc.relation.journalJournal of Physical Chemistry C-
dc.contributor.googleauthorJung, Jin-Young-
dc.contributor.googleauthorZhou, Keya-
dc.contributor.googleauthorBang, Jin Ho-
dc.contributor.googleauthorLee, Jung-Ho-
dc.sector.campusE-
dc.sector.daehak공학대학-
dc.sector.department재료화학공학과-
dc.identifier.pidjungho-
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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