Abstract
Abstract In this study, the effect of morphology and defect density of ZnO nanostructures on photovoltaic performance and electron transport properties of Dye-sensitized solar cells (DSSCs) have been investigated by using highly stable electrolytes which consist of high boiling organic solvents and a mixture of ionic liquids with relatively low viscosity. Two different ZnO nanoarrays with rod and sheet morphologies were fabricated and assembled for photovoltaic and electron transport study of the DSSCs. A photoluminescence spectra study indicated that nanosheets had more defect density compared to nanorods, which resulted in a lower open circuit photovoltage. Electrochemical impedance spectroscopy (EIS) and dye absorption amount analysis further explained the high short-circuit current density (Jsc) of the DSSC with ZnO nanosheet structure based on the dye-loading amount, effective electron lifetime and electron density.
Original language | English |
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Pages (from-to) | 885-889 |
Number of pages | 5 |
Journal | Materials Science in Semiconductor Processing |
Volume | 40 |
DOIs | |
Publication status | Published - 11 Aug 2015 |
Externally published | Yes |
Keywords
- DSSCs
- Dye-sensitized solar cell
- Electrochemical impedance spectroscopy
- Photoluminescence
- Photovoltaic
- Zinc oxide nanomaterials
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering