https://doi.org/10.1140/epjp/s13360-022-02879-1
Regular Article
Optical transitions and photocatalytic activity of NiSe films prepared by the chemical solution deposition method
1
Department of Physics, Faculty of Science, Malayer University, Malayer, Iran
2
ACECR, Vacuum Technology Research Group, Sharif University Branch, Tehran, Iran
3
Mälardalens Högskola (EST), Mälardalen University, Vasteras, Sweden
4
Facultad de Ciencias Físico Matemáticas (FCFM), Universidad Autónoma de Nuevo León (UANL), Av. Universidad s/n, 66455, San Nicolás de los Garza, Nuevo León, Mexico
5
CEITEC BUT, Brno University of Technology, Purkynova 123, 61200, Brno, Czech Republic
6
Fraunhofer Institute for Material and Beam Technology, WinterbergstraBe 28, DE-01277, Dresden, Germany
7
Department of Basic Sciences, Birjand University of Technology, Birjand, Iran
8
Department of Physics, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
b
ali.arman173@gmail.com
f
azelati@birjandut.ac.ir
Received:
2
March
2022
Accepted:
25
May
2022
Published online:
4
June
2022
In this work, nanostructured NiSe thin films were prepared by the chemical solution deposition method at different pH fixing the deposition time. The surface morphology, structural and semiconductor properties of such films were investigated utilizing different methodologies. It was found that slight changes in pH can influence the optical bandgap and structure of NiSe films. The results of Tauc´s plot and the derivation of the ineffective thickness method were compared to estimate the optical bandgap energy and the transition index. Additionally, the Urbach energy was also assessed. The potential of the NiSe nanostructured samples as photocatalysts was evaluated by analyzing the decomposition of azoic Congo red dye under visible light radiation.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022
