期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 200, 期 -, 页码 258-264出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2013.02.006
关键词
ZnS layer; Open-circuit voltage (V-oc); Solar cells
资金
- National Natural Science Foundation of China [11204104, 11254001, 61178074, 61008051]
- Program for the Development of Science and Technology of Jilin province [20110415, 201115219, 20100113]
- Eleventh Five-Year Program for Science and Technology of Education Department of Jilin Province [20090422, 20110169, 20110170]
- Open Project Program for National Laboratory of Superhard Materials [201004]
- Program for the Master Students' Scientific and Innovative Research of Jilin Normal University [201112, 201101, 201139]
ZnS NPs layers were deposited on ZnO NRs by two different ways. One is spin coating; the other is successive ionic layer adsorption and reaction (SILAR) method. The ZnO NRs/ZnS NPs composites were verified by X-ray diffraction, X-ray photoelectron spectroscopy, and UV-visible spectrophotometer; their morphologies and thicknesses were examined by scanning electron microscopic and transmission electron microscopic images. The CdS quantum dot sensitized solar cells (QDSSCs) were constructed using ZnO NRs/ZnS NPs composites as photoanode and their photovoltaic characteristic was studied by J-V curves. The results indicated that the way of SILAR is more beneficial for retarding the back transfer of electrons to CdS and electrolyte than spin coating method. The open-circuit voltage increased to 0.59 V by introducing a ZnS layer through SILAR method. When ZnS NPs layer was deposited for 10 times on ZnO NRs, the conversion efficiency of QDSSC shows similar to 3.3 folds increments of as-synthesized ZnO solar cell. (C) 2013 Elsevier Inc. All rights reserved.
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