Photodielectric effect in lead molybdate monocrystals | Zendy

Volnianskiy M. D. | Zendy; Kudzin A. Yu. | Zendy; Plyaka S. N. | Zendy; Balasmeh Z. H. | Zendy

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Photodielectric effect in lead molybdate monocrystals

Author(s) -

Volnianskiy M. D.,

Kudzin A. Yu.,

Plyaka S. N.,

Balasmeh Z. H.

Publication year - 2005

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200420018

Subject(s) - molybdate , polarizability , dielectric , permittivity , dielectric permittivity , band gap , sunlight , materials science , electron , photon energy , ultraviolet , lattice (music) , chemistry , photon , condensed matter physics , optics , optoelectronics , inorganic chemistry , physics , organic chemistry , quantum mechanics , molecule , acoustics

Illumination by light with photon energy near the band gap increases the dielectric permittivity of lead molybdate (PbMoO 4 ) crystals. This photodielectric effect (PDE) is observed at low measured frequencies (less than 10 kHz). A plot of dielectric permittivity against temperature has a wide maximum in the 470–500 K interval. The PDE essentially increases after exposure to sunlight or ultraviolet light. The PDE may be explained by the increase of polarizability of complex lattice defects by photoexcited electrons. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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