Abstract
The optical absorption spectra of evaporated V2O5 and co-evaporated V2O5/B2O3 thin films have been studied. For higher photon energies, the absorption is found to be due to a direct forbidden electronic transition process from the oxygen 2p band to the vanadium 3d band in a similar way to that observed in crystalline V2O5. The exponential behaviour of absorption edge for lower photon energies is attributed to the electronic transitions between the tailed-off d-d states corresponding to V4+ ions. For co-evaporated V2O5/B2O3 films the optical energy gap is observed to increase with the increase in V2O5 content of the composite films.
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References
F. Urbach,Phys. Rev. 92 (1953) 1324.
D. Redfield,ibid. 130 (1963) 916.
P. G. Aline,ibid. 105 (1957) 406.
R. H. Parmenster,ibid. 97 (1955) 587.
B. Esser,Phys. Status Solidi (b) 51 (1972) 735.
V. L. Bonch-Bruevich,Phys. Status Solidi 42 (1970) 35.
B. Esser andP. Kleinert,Phys. Status Solidi (b) 68 (1975) 265.
B. Esser andN. F. Herzon,ibid. 71 (1975) 63.
N. Kenny, C. R. Kannewurf andD. H. Whitmore,J. Phys. Chem. Solids 27 (1966) 1237.
E. A. Davis andN. F. Mott,Phil. Mag. 22 (1970) 903.
A. P. Schmid,J. Appl. Phys. 40 (1969) 4128.
A. Mansingh, J. M. Reyes andM. Sayer,J. Non-Crystalline Solids 7 (1972) 12.
I. G. Austin andN. F. Mott,Adv. Phys. 18 (1969) 41.
A. P. Schmid,J. Appl. Phys. 39 (1968) 3140.
V. M. Nagiev,Sov. Phys. Solid State 7 (1966) 2004.
Bh. V. Janakirama-Rao,J. Amer. Ceram. Soc. 49 (1966) 605.
Z. Bodo andI. Hevesi,Phys. Status Solidi 20 (1967) K 45.
G. W. Anderson andW. D. Compton,J. Chem. Phys. 52 (1970) 6166.
C. Sanchenz, F. Babonneau, R. Moreneau, J. Livage andJ. Bullot,Phil. Mag. B 47 (1983) 279.
C. R. Aita, Ying-Li Liu, Mei Lee Kao andS. D. Hasen,J. Appl. Phys. 60 (1986) 749.
Nguyen The Quang andI. Hevesi,Acta Phys. Chem. Szeged (Hungary) 20 (1974) 285.
L. Michailovits, I. Hesevi, Liem Phan andZs. Varga,Thin Solid Films 102 (1983) 71.
C. A. Hogarth andL. A. Wright, in “Proceedings of the 9th International Conference on Physics of Semiconductors”, Moscow, edited by S. M. Ryvkin (Nauka, Leningrad, 1968) p. 1274.
J. Bullot, P. Cordier, O. Gallais, M. Gauthier andF. Babonneau,J. Non-Crystalline Solids 68 (1986) 135.
H. W. Verleur, A. S. Barker andC. N. Berglund,Phys. Rev. 172 (1968) 788.
V. G. Mokerov andA. V. Rakov,Sov. Phys. Solid State 11 (1969) 150.
F. P. Koffyberg andN. J. Koziol,J. Appl. Phys. 47 (1976) 4701.
F. R. Landsberger andP. J. Bray,J. Chem. Phys. 53 (1970) 2757.
L. Rivoalen, A. Revcolevschi, J. Livage andR. Collongues,J. Non-Crystalline Solids 21 (1976) 171.
L. Fiermans andJ. Vennik,Surf. Sci. 24 (1971) 541.
G. W. Anderson,J. Appl. Phys. 44 (1973) 406.
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Khan, G.A., Hogarth, C.A. Optical absorption spectra of evaporated V2O5 and co-evaporated V2O5/B2O3 thin films. J Mater Sci 26, 412–416 (1991). https://doi.org/10.1007/BF00576535
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DOI: https://doi.org/10.1007/BF00576535