Photoelectrochemical, Raman spectroscopy, XRD and photoluminescence study of disorder in electrochemically deposited kesterite thin film

Photo-electrochemical measurements, Raman spectroscopy, XRD with Cu Kα1 radiation and photoluminescence (PL) spectroscopy studies were used for evaluating of photo-electric activity of the kesterite thin films and its relation with Cu and Zn atoms disorder. The kesterite films were synthesized using...

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Bibliographic Details
Published in:Journal of alloys and compounds 2020-05, Vol.824, p.153853, Article 153853
Main Authors: Drabavičius, Audrius, Naujokaitis, Arnas, Stalnionis, Giedrius, Giraitis, Raimondas, Mockus, Zenius, Kanapeckaitė, Stasė, Kalinauskas, Putinas, Nedzinskas, Ramūnas, Niaura, Gediminas, Juškėnas, Remigijus
Format: Article
Language:English
Subjects:
Aqueous solutions
Copper
CZTS
Glass substrates
Kesterite
Photoelectricity
Photoelectrochemical response
Photoluminescence
Point defects
Raman spectroscopy
Soda-lime glass
Spectroscopic analysis
Spectrum analysis
Stoichiometry
Sulfurization
Thin film
Thin films
Tin
XRD
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Summary:Photo-electrochemical measurements, Raman spectroscopy, XRD with Cu Kα1 radiation and photoluminescence (PL) spectroscopy studies were used for evaluating of photo-electric activity of the kesterite thin films and its relation with Cu and Zn atoms disorder. The kesterite films were synthesized using the electrochemical deposition of Cu-Sn and Zn layers on Mo/soda-lime glass substrates and subsequent sulfurization. The photo-electrochemical current density was measured as a function of the potential under chopped illumination in 0.1 M Eu(NO3)3 aqueous solution. All the methods showed the medium level of order, i.e. neither completely disordered nor highly ordered. However, the results of Raman spectroscopy predicted the stoichiometry of kesterite different from the one revealed by XRD. The XRD data showed the presence of defects [2CuZn− + SnZn2+], while Raman spectroscopy predicted [2ZnCu+ + ZnSn2-] defects. Based on the results obtained it has been concluded that XRD revealed more plausible information on the kesterite stoichiometry and the point defects as compared to Raman spectroscopy under current experimental conditions. •Kesterite films synthesized using electrodeposition of Cu-Sn/Zn precursor.•Assessment of photovoltaic activity by photoelectrochemical approach.•Evaluation of ordering level of kesterite structure using Raman spectroscopy.•Assessment of ordering level of kesterite structure using XRD with Cu Kα1 radiation.•The XRD yields more plausible evaluation of point defects in the kesterite.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2020.153853