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The effect of growth conditions on the properties of ZnO nanorod dye-sensitized solar cells
- Source :
-
Materials Research Bulletin . Dec2008, Vol. 43 Issue 12, p3345-3351. 7p. - Publication Year :
- 2008
-
Abstract
- Abstract: In this article, we report ZnO nanorod samples grown on transparent conductive SnO2:F (FTO) glass substrates by two different growth routes through hydrothermal method in a closed autoclave. One route is one-step continuous growth for 10h. The other route is discrete multi-step growth for total 48h. In this process, fresh solution was repeatedly introduced in every step. The structural, photoluminescence (PL) and photovoltaic properties of the as-prepared nanorod arrays were investigated. The nanorod arrays obtained through multi-step growth show longer rods, higher aspect ratio, larger spacing, better crystalline quality. The PL spectrum of nanorod arrays obtained through multi-step growth shows a strong and sharp near-band-gap emission (UV) peak and a weak green–yellow emission (GY) peak (I UV/I GY =7.7), which also implies its good crystallinity and high optical quality. Dye-sensitized solar cells based on ZnO nanorod arrays were fabricated, and those grown with discrete multi-step procedure present better photovoltaic properties duo to its special morphology and better crystal quality. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00255408
- Volume :
- 43
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Materials Research Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 34898894
- Full Text :
- https://doi.org/10.1016/j.materresbull.2008.02.010