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Antimony Sulfide Thin Films Obtained by Chemical Bath Deposition using Tartaric Acid as Complexing Agent

Published online by Cambridge University Press:  24 July 2018

J. Escorcia-García ,
M. Domínguez-Díaz ,
A. Hernández-Granados  and
H. Martínez
J. Escorcia-García*
Affiliation:
CONACYT-CINVESTAV del IPN, Unidad Saltillo, Av. Industria Metalúrgica 1062, Parque Industrial, Ramos Arizpe 25900, Coahuila, México.
M. Domínguez-Díaz
Affiliation:
Instituto de Ciencias Físicas-UNAM, Av. Universidad 1001, Cuernavaca 62210, Morelos, México.
A. Hernández-Granados
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas-UAEM, Av. Universidad 1001, Cuernavaca 62209, Morelos, México.
H. Martínez
Affiliation:
Instituto de Ciencias Físicas-UNAM, Av. Universidad 1001, Cuernavaca 62210, Morelos, México.
*
*(Email: [email protected])
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Abstract

The deposition of uniform, reproducible and compact Sb2S3 thin films were obtained by chemical bath deposition using tartaric acid as a complexing agent. It was found that the thickness of the films increases with the pH of the solution, reaching values of 130 and 170 nm for pH values of 9.5 and 10, respectively. XRD, as well as Raman analysis, showed amorphous Sb2S3 films formed directly from the chemical bath, which crystallized into stibnite after a thermal treatment in N2 with crystallite sizes between 31 and 39 nm. On the other hand, the optical band gap of the Sb2S3 films decreased with an increase in pH, with values of 1.82-2.03 eV for the crystalline ones. An n-type photo-conductivity of 10-6 Ω-1 cm-1 was obtained for the heated films. The evaluation of these films for solar cell applications using CdS as the window layer gave a Voc of 656 mV and a Jsc of 2.66 mA/cm2 under AM1.5G radiation.

Keywords

thin filmsemiconductingsolution depositionenergy generation
Type
Articles
Information
MRS Advances , Volume 3 , Issue 56: Energy Materials and Technologies , 2018 , pp. 3307 - 3313
Copyright
Copyright © Materials Research Society 2018 

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References

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