Journal ArticleDOI
The influence of gas adsorption and temperature on the electrical resistivity of SnSe thin films
N Ganesan,V Sivaramakrishnan +1 more
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In this paper, the effect of adsorption and temperature on the electrical resistivity of SnSe thin films on the thickness range 500-2500 AA was investigated and it was found that the temperature variation of resistance indicates interesting irreversible behaviour in the first heating cycle and the behaviour is suspected to be due to acceptor formation at higher temperatures.Abstract:
The effect of adsorption and temperature (300-450 K) on the electrical resistivity of SnSe thin films on the thickness range 500-2500 AA was investigated. Adsorption of oxygen has considerable influence on the electrical resistivity and it is observed to act as a p-type dopant. The temperature variation of resistance indicates interesting irreversible behaviour in the first heating cycle and the behaviour is suspected to be due to acceptor formation at higher temperatures. Adsorption and annealing were found to have a significant effect on the temperature variation of the resistance of SnSe thin films.read more
Citations
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Atmospheric pressure chemical vapour deposition of SnSe and SnSe2 thin films on glass
TL;DR: In this paper, atmospheric pressure chemical vapour deposition of tin monoselenide and tin diselenide films on glass substrate was achieved by reaction of diethyl selenide with tin tetrachloride at 350-650°C. X-ray diffraction showed that all the films were crystalline and matched the reported pattern for SnSe and or SnSe2.
Journal ArticleDOI
Novel semiconductor materials for the development of chemical sensors and biosensors: a review.
TL;DR: A condensed overview of the contribution of certain relatively new semiconductor substrates in the development of chemical and biochemical field effect transistors and their future prospects for their applications in the sensor area are described.
Journal ArticleDOI
Perspectives on SnSe-based thin film solar cells: a comprehensive review
TL;DR: In this paper, a review on the physical properties of tin monoselenide (SnSe) and its device structures in a deeper sense is presented, highlighting the different factors that are limiting the efficiency of SnSe solar cells, and a few suggestions were included to overcome these problems for further improvement of these cells.
Book ChapterDOI
7 – Bio-chem-FETs: field effect transistors for biological sensing
Nikolaos Chaniotakis,M. Fouskaki +1 more
TL;DR: In this paper, the key issues of field effect transistors (FETs) operation are discussed and new advances in Bio-chem-FET design, based on novel carbon and inorganic nanomaterials, are presented.
References
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Journal ArticleDOI
Electrical properties and optical absorption of SnSe evaporated thin films
TL;DR: In this paper, the optical absorption coefficient of SnSe thin film was measured at 300 K over the photon energy range 0.8 to 1.3 eV and an exponential 1/T law was observed for each of these variations.
Journal ArticleDOI
The role of oxygen in the sensitization of photoconductive PbSe films
TL;DR: In this paper, the effect of introducing oxygen to a certain partial pressure into the vacuum system during deposition and of the further sensitization of the films by a thermal treatment in air was studied by transmission electron microscopy and by mobility and carrier concentration measurements.
Journal ArticleDOI
Surface Transport Phenomena in PbSe Epitaxial Films
M. H. Brodsky,Jay N. Zemel +1 more
TL;DR: In this article, the effect of ambients on the electrical properties of a number of PbSe epitaxial films was examined and the authors concluded that the existing surface-mobility calculations for degenerate semiconductors are inadequate.
Journal ArticleDOI
Surface barriers and surface conductance
John Bardeen,S.R. Morrison +1 more
TL;DR: In this article, the effect of a space-charge barrier layer at the free surface of a semiconductor on various properties: (1) contact potential, (2) change in contact potential with illumination, (ΔC.P.) L, (3) rectification, including adsorption, surface life-time and photo conductivity, including the channel effect in NPN transistors, and effect of an external transverse electric field on surface conductance (field effect).
Journal ArticleDOI
Surface interaction of H and O2 on thin PbSe epitaxic films
G. McLane,Jay N. Zemel +1 more
TL;DR: In this paper, thin PbSe films were evaporated onto NaCl substrates and the effect of various ambient gases on their electrical properties was investigated, and the experimental data can be explained quite well by a phenomenological two-layer model for the film which consists of a bulk region and a surface region which is affected by gas ambients.