Polycrystalline bismuth selenide (Bi2Se3) thin films prepared by reactive evaporation

John, Klaus; Pradeep, B.; Mathai, Elizabeth

doi:10.1016/0038-1098(92)90046-c

Cited by 11 publications

(1 citation statement)

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“…It is based on the fact that continuous condensation of a given vapour at a given rate takes place only if the temperature of the substrate drops below a certain critical value. For many binary systems it has been found that a stoichiometric interval exists with a limited degree of freedom in selecting the individual components and substrate temperature for obtaining a particular compound of the system [17][18][19]. In this work we have used a conventional vacuum system with two separate sources.…”

Section: Methodsmentioning

confidence: 99%

Structural, electrical and optical properties of silver selenide thin films

Kumar¹,

Pradeep²

2002

Semicond. Sci. Technol.

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We study the structural, electrical and optical properties of silver selenide thin films prepared by reactive evaporation. From the Hall effect study, at room temperature we find a mobility of 2000 cm 2 V −1 s −1 and a carrier concentration of 10 18 cm −3 . The thermoelectric power is measured from room temperature up to 200 • C. X-ray diffraction indicates that the as-prepared films are polycrystalline in nature. The composition and morphology are determined using energy dispersive x-ray analysis and scanning electron microscopy (SEM). The optical bandgap, which is direct-allowed, is 1.58 eV.

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Section: Methodsmentioning

confidence: 99%