Cu-Based Metal-Organic Frameworks for Photovoltaic Application

Title
Cu-Based Metal-Organic Frameworks for Photovoltaic Application
Author
한성환
Keywords
Cu-based metal?organic; Application
Issue Date
2014-06
Publisher
AMERICAN CHEMICAL SOCIETY
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, 권: 118, 호: 30, 페이지: 16328-16334
Abstract
In the present study, a thin layer of Cu-based metal-organic frameworks (MOFs, copper(11) benzene-1,3,5-tricarboxylate) is fabricated using a layer-by-layer technique, and the layer is investigated as a light-absorbing layer in TiO2-based solar cells. Iodine doping of the MOFs is performed to improve the conductivity and charge-transfer reaction across the TiO2/MOF/electrolyte interface. The HOMO and LUMO energy states of the MOF films are estimated to be -5.37 and -3.82 eV (vs vacuum), respectively, which show a well-matched energy cascade with TiO2. For the first time, a TiO2-based solar cell is fabricated successfully using iodine-doped Cu-MOFs as an active layer, demonstrating a cell performance with J(sc)= 1.25 mA cm(-2) and Eff = 0.26% under illumination of 1 sun radiation. In contrast, the cell with an undoped MOF layer exhibited J(sc) = 0.05 mA cm(-2) and Eff = 0.00896. Electrochemical impedance spectroscopy of the cells suggests that iodine doping significantly reduces the charge-transfer resistance.
URI
https://pubs.acs.org/doi/pdf/10.1021/jp4079663http://hdl.handle.net/20.500.11754/46594
ISSN
1932-7447
DOI
10.1021/jp4079663
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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