Volume 213, Issue 8 pp. 2229-2236
Original Paper

Cubic-structured tin selenide thin film as a novel solar cell absorber

P. K. Nair

Corresponding Author

P. K. Nair

Instituto de Energías Renovables, Universidad Nacional Autónoma de México Temixco, Morelos, 62580 Mexico

Corresponding author: e-mail [email protected], Phone/Fax: +52 (55) 56229742

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E. Barrios-Salgado

E. Barrios-Salgado

Instituto de Energías Renovables, Universidad Nacional Autónoma de México Temixco, Morelos, 62580 Mexico

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M. T. S. Nair

M. T. S. Nair

Instituto de Energías Renovables, Universidad Nacional Autónoma de México Temixco, Morelos, 62580 Mexico

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First published: 10 March 2016
Citations: 36

Abstract

Tin selenide thin film with a simple cubic crystalline structure (SnSe-CUB) of unit cell dimension a = 11.9632 Å is obtained via chemical deposition on a tin sulfide (SnS-CUB) thin film base layer of simple cubic structure of a = 11.5873 Å. The SnSe-CUB films obtained this way are thermally stable while heating to 300 °C. Its optical band gap is 1.4 eV. A thin film of 200 nm in thickness of this material in a solar cell may lead to a light generated current density of 23 mA cm−2 and a maximum of 29 mA cm−2. Thin film of SnSe-CUB possesses p-type electrical conductivity of 5 × 10−5 Ω−1 cm−1, which is three orders of magnitude lower than that of SnSe films of orthorhombic crystalline structure. Overall, these characteristics make SnSe-CUB thin film a novel solar cell absorber material.

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