K
K. Seetharama Bhat
Researcher at Indian Institute of Technology Madras
Publications - 6
Citations - 81
K. Seetharama Bhat is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Thin film & Seebeck coefficient. The author has an hindex of 5, co-authored 6 publications receiving 80 citations.
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Electrical conductivity of air-exposed and unexposed lead telluride thin films-temperature and size effects
TL;DR: In this paper, it was found that the electrical resistivity of the air-exposed films is much higher than that of the as-grown (unexposed) thin films.
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Electrical-conductivity changes in PbTe and PbSe films on exposure to the atmosphere.
TL;DR: In this article, the authors measured the resistance of lead telluride and lead selenide films at different air pressures and found that resistance of the as-grown films was of the order of a kilohm but increased with increasing pressure.
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Anomalous temperature dependence of thermoelectric power of PbTe thin films
TL;DR: In this paper, thin films of thicknesses ranging from 400 to 4000 A have been prepared by vacuum evaporation at a pressure of 5×10−5 Torr on clean glass substrates held at room temperature.
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Temperature variation of thermoelectric power of vacuum deposited PbSe thin films and its thickness dependence
TL;DR: In this paper, the thermoelectric power of PbSe thin films has been evaluated as a function of temperature in the range 300 to 500 K from the thermal e.m.f. data.
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A two-layer model to explain the thickness dependence of conductivity and thermoelectric power of semiconductor thin films and application of the model to PbTe thin films
TL;DR: In this paper, a two-layer model to explain the thickness dependence of conductivity and thermoelectric power of semiconducting thin films has been developed assuming that the film is a parallel combination of resistances of the three layers: the first is the interior ‘grain boundary' layer, and the other two, outer layers on opposite sides, whose conductivities are altered by the band bending.