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dc.contributor.author이휘건-
dc.date.accessioned2018-03-22T04:32:27Z-
dc.date.available2018-03-22T04:32:27Z-
dc.date.issued2014-10-
dc.identifier.citationBULLETIN OF THE KOREAN CHEMICAL SOCIETY, 2014, 35(10), P.2895-2900en_US
dc.identifier.isbn1229-5949-
dc.identifier.issn0253-2964-
dc.identifier.urihttp://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=JCGMCS_2014_v35n10_2895-
dc.description.abstractWe fabricated quantum dot-sensitized solar cells (QDSSCs) using cadmium sulfide (CdS) and cadmium telluride (CdTe) quantum dots (QDs) as sensitizers. A spin coated TiO2 nanoparticle (NP) film on tin-doped indium oxide glass and sputtered Au on fluorine-doped tin oxide glass were used as photo-anode and counter electrode, respectively. CdS QDs were deposited onto the mesoporous TiO2 layer by a successive ionic layer adsorption and reaction method. Pre-synthesized CdTe QDs were deposited onto a layer of CdS QDs using a direct adsorption technique. CdS/CdTe QDSSCs had high light harvesting ability compared with CdS or CdTe QDSSCs. QDSSCs incorporating single-walled carbon nanotubes (SWNTs), sprayed onto the substrate before deposition of the next layer or mixed with TiO2 NPs, mostly exhibited enhanced photo cell efficiency compared with the pristine cell. In particular, a maximum rate increase of 24% was obtained with the solar cell containing a TiO2 layer mixed with SWNTs. 양자점 감응형 태양전지 (QDSSC)의 광전극 물질로 널리 사용되고 있는 산화 반도체인 산화 아연 (ZnO)의 경우 전자 이동도가 높고 화학적으로 안정하다는 장점을 갖고 있지만, 넓은 밴드 갭으로 인해 좁은 태양광 반응 범위를 가져 이 산화 티타늄 (TiO2) 기반 QDSSC에 비해 전반적으로 낮은 광전 변환 효율을 보이고 있다. 이에 ZnO의 흡광도와 전기전도도를 강화해 ZnO QDSSC의 효율 을 향상하기 위해 다공성 ZnO 나노입자를 합성할 때 공침법을 통해 0.5 at%의 구리(Cu) 이온을 도핑한 후, 이를 기반으로 Cu-doped ZnO QDSSC를 제작했 다. ZnO의 표면 형태, 결정 구조, UV-Vis 흡광 스펙트럼과 Cu-doped ZnO QDSSC의 광 발전 성능, 전기화학적 임피던스 분석을 이용한 내부 저항 측정을 통해 Cu-doped ZnO QDSSC의 광학적·전기적 특성의 향상 여부를 분석했다. 그 결과 Cu 도핑으로 ZnO의 흡광도와 전기 전도도가 향상해 ZnO QDSSC의 효율이 2.268 %에서 2.607 %로 상승했고, 이를 통해 Cu 도핑이 QDSSC의 광 발전 성능을 향상하는데 기여했음을 확인했다.en_US
dc.description.sponsorshipNational Research Foundation of Korea - Ministry of Education, Science, and Technologyen_US
dc.language.isoenen_US
dc.publisher대한화학회en_US
dc.subjectQuantum dot-sensitized solar cellen_US
dc.subjectZinc oxideen_US
dc.subjectDopingen_US
dc.subjectCo-precipitationen_US
dc.subjectElectrochemical impedance spectroscopyen_US
dc.titleImproved Performance of CdS/CdTe Quantum Dot-Sensitized Solar Cells Incorporating Single-Walled Carbon Nanotubesen_US
dc.title.alternativeCdTe Quantum Dot-Sensitized Solar Cells Incorporating Single-Walled Carbon Nanotubesen_US
dc.typeArticleen_US
dc.relation.no10-
dc.relation.volume35-
dc.identifier.doi10.5012/bkcs.2014.35.10.2895-
dc.relation.page2895-2900-
dc.relation.journalBULLETIN OF THE KOREAN CHEMICAL SOCIETY-
dc.contributor.googleauthorShin, Hokyeong-
dc.contributor.googleauthorPark, Taehee-
dc.contributor.googleauthorLee, Jongtaek-
dc.contributor.googleauthorLee, Junyoung-
dc.contributor.googleauthorYang, Jonghee-
dc.contributor.googleauthorHan, Jin Wook-
dc.contributor.googleauthorYi, Whikun-
dc.relation.code2014026628-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF NATURAL SCIENCES[S]-
dc.sector.departmentDEPARTMENT OF CHEMISTRY-
dc.identifier.pidwkyi-
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COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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