Study of the light-trapping effects of textured ZnO:Al/glass structure TCO for improving photocurrent of a-Si :H solar cells

Effects of using ZnO:Al (AZO) transparent conducting oxide films on the performance of the hydrogenated amorphous Si (a-Si:H) solar cells are studied. AZO films are prepared by the sol-gel method. Rapid thermal annealing (RTA) in vacuum of these films results in a decrease in resistivity. AZO films...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2007-10, Vol.18 (S1), p.159-162
Main Authors: SOBAJIMA, Y, KATO, S, MATSUURA, T, TOYAMA, T, OKAMOTO, H
Format: Article
Language:English
Subjects:
Applied sciences
Azo
Electronics
Energy
Exact sciences and technology
Glass
Materials
Natural energy
Optoelectronic devices
Photocurrent
Photoelectric effect
Photovoltaic cells
Photovoltaic conversion
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Solar cells
Solar cells. Photoelectrochemical cells
Solar energy
Thin films
Transmittance
Zinc oxide
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Summary:Effects of using ZnO:Al (AZO) transparent conducting oxide films on the performance of the hydrogenated amorphous Si (a-Si:H) solar cells are studied. AZO films are prepared by the sol-gel method. Rapid thermal annealing (RTA) in vacuum of these films results in a decrease in resistivity. AZO films exhibit a high transmittance in the visible region and excellent resistance against hydrogen radical exposure. The light-trapping effect is proven by a measured decrease in the transmittance and reflectance spectra of the textured AZO/glass structure with a RMS roughness of 67.5 nm. It is concluded that highly textured AZO/glass structures enhance the photocurrent in a-Si:H-based thin film solar cells.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-007-9186-8