Issue 3, 2012
From the journal:

Journal of Materials Chemistry

High efficiency ultraviolet photovoltaic cells based on ZnO–C60 core–shell QDs with organic–inorganic multilayer structure

Dong Ick Son,a   Byoung Wook Kwon,a   Jeong Do Yang,a   Dong Hee Park,a   Basavaraj Angadib  and  Won Kook Choi*a  

* Corresponding authors

a Future Convergence Research Division, Korea Institute of Science and Technology, Hwarangno 14 gil 5, Seoul, Korea
E-mail: wkchoi@kist.re.kr
Fax: +82 2 958 6720
Tel: +82 2 958 5562

b Department of Physics, Bangalore University, Bangalore, India

Abstract

We report on the successful conjugation of C60 molecules on the surface of ZnO quantum dots (QDs) and their application in multi-layer structured ultraviolet (UV) photovoltaic (PV) devices. In situgrowth of C60 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 C60 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 C60 through a Zn–O–C chemical bonding. UV PV cells with ZnO–C60 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%.

Graphical abstract: High efficiency ultraviolet photovoltaic cells based on ZnO–C60 core–shell QDs with organic–inorganic multilayer structure

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Article information

DOI
https://doi.org/10.1039/C1JM14555J
Article type
Communication
Submitted
14 Sep 2011
Accepted
27 Oct 2011
First published
17 Nov 2011

J. Mater. Chem., 2012,22, 816-819

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High efficiency ultraviolet photovoltaic cells based on ZnO–C60 core–shell QDs with organic–inorganic multilayer structure

D. I. Son, B. W. Kwon, J. D. Yang, D. H. Park, B. Angadi and W. K. Choi, J. Mater. Chem., 2012, 22, 816 DOI: 10.1039/C1JM14555J

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