Facile synthesis of highly branched jacks-like ZnO nanorods and their applications in dye-sensitized solar cells
- Title
- Facile synthesis of highly branched jacks-like ZnO nanorods and their applications in dye-sensitized solar cells
- Author
- 강용수
- Keywords
- Nanostructures; Oxides; Chemical synthesis; Electron microscopy; X-ray diffraction; PHOTOVOLTAIC PERFORMANCE; CONVERSION EFFICIENCY; ELECTRON-TRANSPORT; DIFFUSION LENGTH; RECOMBINATION; NANOSTRUCTURES; SPECTROSCOPY; NANOWIRES
- Issue Date
- 2011-09
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
- Citation
- In Materials Research Bulletin, Vol.46, No.9 [2011], p1473-1479
- Abstract
- Highly branched, jacks-like ZnO nanorods architecture were explored as a photoanode in dye-sensitized solar cells, and their photovoltaic performance was compared with that of branch-free ZnO nanorods photoanodes. The highly branched network and large pores of the jacks-like ZnO nanorods electrodes enhances the charge transport, and electrolyte penetration. Thus, the jacks-like ZnO nanorods DSSCs render a higher conversion efficiency of eta = 1.82% (V(oc) = 0.59 V. J(sc) = 5.52 mA cm(-2)) than that of the branch-free ZnO nanorods electrodes (eta = 1.08%, V(oc) = 0.49 V, J(sc) = 4.02 mA cm(-2)). The incident photon-to-current conversion efficiency measurements reveal that the jacks-like ZnO nanorods DSSCs exhibit higher internal quantum efficiency (similar to 59.1%) than do the branch-free ZnO nanorods DSSC (similar to 52.5%). The charge transfer resistances at the ZnO/dye/electrolyte interfaces investigated using electrochemical impedance spectroscopy showed that the jacks-like ZnO nanorods DSSC had high charge transfer resistance and a slightly longer electron lifetime, thus improving the solar-cell performance. (c) 2011 Elsevier Ltd. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0025540811002030?via%3Dihubhttp://hdl.handle.net/20.500.11754/36611
- ISSN
- 0025-5408
- DOI
- 10.1016/j.materresbull.2011.04.027
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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