Journal
JOURNAL OF MATERIALS RESEARCH
Volume 29, Issue 8, Pages 935-941Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/jmr.2014.74
Keywords
nickel sulfide; dye-sensitized solar cells; solvothermal method; counter electrode
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Funding
- National Natural Science Foundation of China [11174002]
- '211 Project' of Anhui University
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Two phases of nickel sulfide (alpha-NiS and beta-NiS) nanoarchitectures were successfully and controllably synthesized by a facile solvothermal method with two different solvents of alcohol and water, respectively. The products were characterized by x-ray diffraction, scanning electron microscopy, transmission electron microscopy, and UV-vis diffuse reflectance spectrophotometer. The sphere-like shape for alpha-NiS and cross-like shape composed of nanorods for beta-NiS are uniform and well distributed as well as their size. Both alpha-NiS and beta-NiS powders were used as counter electrodes (CEs) in dye-sensitized solar cells (DSSCs). It is found that the DSSC with an alpha-NiS CE performs much better than the one with a beta-NiS CE. The energy conversion efficiency of the former was 5.2%, whereas the latter was 4.2%, about 20% increment.
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