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Research Article

Band gap modification of spray pyrolysed ZnS films by doping and thermal annealing

Serço Serkis Yeşilkaya, Ünzile Ulutaş

Department of Physics, Yıldız Technical University, İstanbul, Turkey

Keywords

Abstract



ZnS;

Spray pyrolysis;

Band gap energy;

Doping



ZnS thin films are widely used in solar cells as window material. Optical and electrical properties of the films such as band gap energy and resistivity directly affect device performance. In this work it was shown that properties of ZnS films can be changed by doping and thermal annealing. Therefore, films with convenient parameters can be chosen for the fabrication of any device. ZnS films were fabricated by spray pyrolysis technique. Zinc chloride and thiourea used as sources of Zn and S respectively. Films were grown on 350oC hot substrates. Furthermore 1, 5, 10, 15 % doped films prepared by addition of boric acid into the solution. Structural, optical and electrical properties of the films were examined by SEM, XRD, optical transmission and resistivity measurements. Later on all films annealed in air at 350oC for 30 min. All measurements were done also for annealed films. Effects of doping and thermal annealing on the band gap energy and resistivity of the films were shown. Band gap energies of the films were between 3.37-3.82 eV and surface resistivities were between 257.2-12.5 MΩ.

© 2019 MIM Research Group. All rights reserved.

LATEST News

20/08/2020 Collaboration for IMSTEC 2020: Editorial Board of our journal and Organizing Committee of the 5. International Conference on Material Science and Technology (IMSTEC 2020) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events.  


21/02/2020 Collaboration for SET 2020: Editorial Board of our journal and Organizing Committee of the 19th International Conference on Sustainable Energy Technologies (SET 2020) have agreed to collaborate. Extended versions of the selected papers from the conference will be published in our journal. For more see Events.


25/12/2019 Most Cited Paper Award: The paper authored by Manoj Sahni and Sanjeev Sharma entitled as “Elastic-plastic deformation of a thin rotating solid disk of exponentially varying density" is awarded the 2019 Most Cited Paper Award of Research on Engineering Structures and Materials (RESM).

25/12/2019 Best Paper Award: The paper authored by Marcelo Mesquita do Amaral, Matheus Wanglon Ferreira and Mauro de Vasconcellos Real entitled as “A simplified method for analysis of reinforced concrete beams exposed to fire situation” is awarded the 2019 Best Paper Award of Research on Engineering Structures and Materials (RESM).


13/11/2019 Data articles as a new type of submision: Editorial Board of our journal have decided to accept a new type of submission: data articles. The focus of these papers is only on data and how it is collected but not on its interpretation and drawn conclusions. For more see News section.


(More details of the news may be given in the News section)


For more see News...

LATEST AWARDS


2019 Most Cited Paper Award:

The paper authored by Manoj Sahni and Sanjeev Sharma entitled as “Elastic-plastic deformation of a thin rotating solid disk of exponentially varying density" is awarded the


2019 Best Paper Award:

The paper authored by Marcelo Mesquita do Amaral, Matheus Wanglon Ferreira and Mauro de Vasconcellos Real entitled as “A simplified method for analysis of reinforced concrete beams exposed to fire situation” is awarded the 


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Last Update:

28.09.2020

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