A thermally evaporated p-type amorphous tungsten oxide (p-a-WO3) film was introduced as a novel buffer layer between SnO2 and p-type amorphous silicon carbide (p-a-SiC) of pin-type amorphous silicon (a-Si) based solar cells. By using this film, a-Si solar cells with a p-a-WO3 /p-a-SiC double p-layer structure were fabricated and the cell photovoltaic characteristics were investigated as a function of p-a-WO3 layer thickness. By inserting a 2 nm-thick p-a-WO3 layer between SnO2 and a 6 nm-thick p-a-SiC layer, the short circuit current density increased from 9.73 to 10.57 mA/cm2, and the conversion efficiency was enhanced from 5.17 % to 5.98 %.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
K. S. Lim, M. Konagai and K. Takahashi, J. Appl. Phys. 56, 538 (1984).
C. H. Lee, J. W. Jeon and K. S. Lim, J. Appl. Phys. 87, 8778 (2000).
W. Y. Kim, H. Tasaki, M. Konagai, and K. Takahashi, J. Appl. Phys. 61, 3071 (1987).
C. H. Lee and K. S. Lim, Appl. Phys. Lett. 72, 106 (1998).
S. C. Han, W. S. Shin, M. S. Seo, D. Gupta, S. J. Moon and S. Yoo, Organic Electronics 10, 791(2009).
H. S. Cho, C. H. Yun, J. W. Park and S. Yoo, Organic Electronics 10, 1163(2009).
J. Krc, M. Zeman, O. Kluth, F. Smole and M. Topic, Thin Solid Films 451, 298 (2004).
K. Itoh, H. Matsumoto, T. Kobata and A. Fujishima, Appl. Phys. Lett. 51, 1685 (1987).
M. J. Son, S. H. Kim, S. N. Kwon and J. W. Kim, Organic Electronics 10, 637(2009).
S. Benci, M. Manfredi and G. C. Salviati, Solid State Communication 33, 107 (1980).
N. F. Mott, J. Non-Cryst. Solids. 1, 1(1968).
C. Bechinger, S. Herminghaus and P. Leiderer, Thin Solid Films 239, 156 (1994).
N. F. Mott and E. A. Davis, Electronic Processes in Non-Crystalline Materials (Oxford University Press, London, 1979).
B. Heinz, M. Merz, P. Widmayer and P. Ziemann, J. Appl. Phys. 90, 4007 (2001).
Y. F. Lu and H. Qiu, J. Appl. Phys. 88, 1082 (2000).
About this article
Cite this article
Fang, L., Jae Baik, S., Su Lim, K. et al. Improving Performance of Amorphous Silicon Solar Cells Using Tungsten Oxide as a Novel Buffer Layer between the SnO2/p-a-SiC Interface. MRS Online Proceedings Library 1245, 705 (2009). https://doi.org/10.1557/PROC-1245-A07-05