High efficiency ultraviolet photovoltaic cells based on ZnO-C-60 core-shell QDs with organic-inorganic multilayer structure

Authors
Son, Dong IckKwon, Byoung WookDo Yang, JeongPark, Dong HeeAngadi, BasavarajChoi, Won Kook
Issue Date
2012-01
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY, v.22, no.3, pp.816 - 819
Abstract
We report on the successful conjugation of C-60 molecules on the surface of ZnO quantum dots (QDs) and their application in multilayer structured ultraviolet (UV) photovoltaic (PV) devices. In situ growth of C-60 on the surface of ZnO QDs with a core-shell structure was realized via a mild solution-process method, which resulted in an improvement in photo-induced charge separation and transport of carriers to the collecting electrodes in a fabricated device. The conjugation of the C-60 with ZnO QDs leads to a PL quenching of about 99.8%, which can be attributed to an efficient transfer of photo-induced electrons from the ZnO QDs to the C-60 through a Zn-O-C chemical bonding. UV PV cells with ZnO-C-60 core-shell QDs as an active layer and fabricated through an all layer simple chemical method exhibit high power conversion efficiency as much as about 3.02%.
Keywords
LIGHT-EMITTING-DIODES; POLYMER; ZNO; NANOPARTICLES; LIGHT-EMITTING-DIODES; POLYMER; ZNO; NANOPARTICLES; ZnO-C60; UV photovoltaic; queching effect; nano carbons; photon conversion efficiencey
ISSN
0959-9428
URI
https://pubs.kist.re.kr/handle/201004/129689
DOI
10.1039/c1jm14555j
Appears in Collections:
KIST Article > 2012
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