Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3073834
Keywords
dyes; electrodes; fluorine; light scattering; multilayers; porosity; reflectivity; scanning electron microscopy; solar cells; tin compounds
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Funding
- National Natural Science Foundation of China [10874077, 50732004]
- Jiangsu Provincial High Technology Research Program [BG2006030, BK2008252]
- National Basic Research Program of China [2007CB613301]
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Multilayer structure was prepared in a dye-sensitized solar cell work electrode by enlarging the porosity in each layer being coated on the fluorine-doped tin oxide transparent conducting glass from bottom to top. The multilayer structure exhibits an improved light scattering character, which resulted in better light harvesting of the cell. An obvious improvement in short circuit current is obtained. I-V characteristic measurement indicates an improved efficiency by 13% as compared to homogeneous pore-size samples. Diffuse reflectance spectra, scanning electron microscope images, and porosity measurements demonstrate that larger porosity is the cause of enhanced light scattering.
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