Advances in amorphous semiconductors by Jai Singh

By Jai Singh

This ebook offers the present point of figuring out of the structural, digital and optical homes of amorphous semiconductors. As amorphous fabrics go away considerably from the crystalline opposite numbers, many of the simple difficulties linked to the validity of the powerful mass approximation, no matter if okay is an effective quantum quantity, and ideas of phonons and excitons may be addressed intimately. an important a part of the booklet is dedicated to offer contemporary growth made within the figuring out of light-induced degradations in amorphous semiconductors, that's considered as the main proscribing challenge in gadget functions. The monograph provides a complete overview of either experimental and theoretical experiences on amorphous semiconductors.

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J. (1985). J. Non-Cryst. Solids 71, 295. T. M. (1992). J. : Condens. Matter 4, 6047. Yang, R. and Singh, J. (1998). J. Non-Cryst. Solids 240, 29. , Sakamoto, S. and Hori, M. (1991). J. Non-Cryst. Solids 137–138, 135. Zallen, R. (1983). The Physics of Amorphous Solids. John Wiley & Sons, New York. M. (1979). Models of Disorder. Cambridge University Press, Cambridge. “chap02” — 2003/2/22 — 18:13 — page 36 — #16 3 Theory of effective mass In amorphous solids (a-solids) when determining various electronic transport related quantities that require electron or hole mass, the free electron mass is usually used.

35 Å for c-Si, for example. The first sum is over l denoting the atomic sites and their four neighbors designated by i and j , in the second term the sum is over distinct pairs of neighbors i and i , and rli represents the vector position of the ith neighbor from atom l. 2. , 1993). , 1988). , 1994), the electronic structure has also been calculated for tetrahedral carbon (ta-C). 2 Reverse Monte Carlo simulation A new technique, so-called Reverse Monte Carlo (RMC) simulation has been developed (McGreevy and Pusztai, 1988).

1986). Adv. Phys. 35, 317. , Car, A. and Parrinello, M. (1991). Phys. Rev. B 44, 11092. Tanaka, Ke. (1987). J. Non-Cryst. Solids 90, 363. Tanaka, Ke. (1989a). Phys. Rev. B 39, 1270. Tanaka, Ke. (1989b). , Kirov, N. and Vavrek, A. (eds), Disordered Systems and New Materials. World Scientific, Singapore, p. 290. Tanaka, Ke. (1998). Jpn. J. Appl. Phys. 37, 1747. Tersoff, J. (1989). Jpn. J. Appl. Phys. 39, 5566. Tersoff, J. (1998). Phys. Rev. B 38, 9902. F. (1983). J. Non-Cryst. Solids 57, 355. , Muno, D.

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