Growth and characterization of ZnO nanostructure on TiO{sub 2}-ZnO films as a light scattering layer for dye sensitized solar cells
Graphical abstract: Pictorial representation of (a,b) electron transport path in nanoparticles and nanorods (red arrow marks), and (c,d) light scattering effect on TiO2-ZnO film without and with light scattering layer (blue, red and green arrow marks are incident, transmit and scattering light, respectively). - Abstract: In the present work, we studied the effect of light scattering layer on the performance of DSSCs. TiO{sub 2}-ZnO thin films were coated onto FTO glass substrate by spin coating technique as a photoanode for DSSCs. ZnO nanorods with flower structures were potentiostatically grown on TiO{sub 2}-ZnO films at various potentials from −1.1 to 1–1.3 V as a light scattering layer. XRD patterns reveal that as the deposition potentials increase the growth of ZnO nanorods increases along with (101) plane orientation. FE-SEM images display agglomerated grains and nanorods with flower structures for TiO{sub 2}-ZnO film, and ZnO has grown on TiO{sub 2}-ZnO film at a deposition potential of −1.3 V. UV–vis spectra confirm the TiO{sub 2}-ZnO with ZnO nanorods having a higher light scattering effect, absorbance and dye loading than that of another film. The efficiency of the DSSCs consisting of without and with scattering layer is estimated to be 0.79 and 1.81%, respectively.
- OSTI ID:
- 22730482
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 95; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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