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Optical Properties of Semiconducting Amorphous Multilayers Consisting of Disordered Wells and Ordered Barriers

  • S. Nitta (a1) (a2), T. Itoh (a1), S. Nonomura (a1) and K. Morigaki (a3)

Abstract

The optical properties of random multilayer films are presented. Very small disorder in the well layer thickness (3 A standard deviation in 20 A) change the optical properties drastically. These optical spectrum are found to be useful to detect the disorder in the multilayers and also are very suitable to investigate the properties of randomness.

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[1] Yamaguchi, M., Ohta, H., Ogihara, C., Yokomichi, H., Morigaki, K., Nonomura, S. and Nitta, S., J. Non-Cryst. Solids 97&98, 931 (1987)
[2] Nitta, S., Itoh, T., Nonomura, S., Ohta, H. and Morigaki, K., Philoso. Mag. (1989) in print.
[3] As the control elements, we used electromagnetic valves and air actuated shut off valves made by CKD Co., Ltd. and massflow controllers made by ESTEC Co., Ltd..
[4] Gerhardt, U. and Rubloff, G.W., Appl. Opt. 8, 305 (1969)
[5] Nitta, S., Itoh, S., Tanaka, M., Endo, T. and Hatano, A., Solar Energy Materials 8, 249 (1982)
[6] John, S., Phys. Rev. Lett. 53, 2169 (1984)
[7] Anderson, P.W., Philoso. Mag. B52, 505 (1985)

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