期刊
CARBON
卷 96, 期 -, 页码 139-144出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2015.09.023
关键词
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资金
- National Research Foundation (NRF) grant - Korea government (MSIP) [NRF-2014R1A2A2A01006994]
- Korea CCS R&D Center (KCRC) grant - Korea government (MSIP) [2014M1A8A1049345]
- NRF-RFBR Joint Research Program through the National Research Foundation [NRF-2013K2A1A7076282]
- National Research Foundation Postdoctoral Fellowship Program [NRF-2014K2A4A1034681]
- Korea Brain Pool Program [131S-6-3-0538]
- Institute for Basic Science [IBS-R004-D1]
Carbon dot-Au nanoraspberries (Cdot-Au NRs) were synthesized by a simple one-pot process using Cdots as initiators to direct the dendritic growth of Au via room temperature chemical reduction of HAuCl4 by formic acid. We evaluated the resulting Cdot-Au NR as a counter electrode material for ZnO nanowire/CdS/CdSe quantum dot-sensitized solar cells (QDSCs). The counter electrode employing Cdot-Au NRs exhibited higher electrocatalytic activity, lower charger-transfer resistance, and larger exchange current density than commonly used Au-sputtered counter electrodes. The power conversion efficiency of the cell was improved to 5.4%, in comparison to efficiencies of 3.6% and 0.18% shown by cells employing Au-sputtered and Cdot counter electrodes, respectively. These features render Cdot-Au NRs as highly promising counter electrode materials for QDSCs. (C) 2015 Elsevier Ltd. All rights reserved.
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