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<strong>One step synthesis of Cu2ZnSnS4 nanoflakes by microwave irradiation technique and effect of Cu concentration</strong>

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Title Statement <strong>One step synthesis of Cu2ZnSnS4 nanoflakes by microwave irradiation technique and effect of Cu concentration</strong>
 
Added Entry - Uncontrolled Name Kandare, Sneha Pravin; Savitribai Phule Pune University
Dhole, Sanjay Daga; Savitribai Phule Pune University
Dahiwale, Shailendra Satish; Savitribai Phule Pune University
Thorat, A B ; Department of Physics, Savitribai Phul e Pune University, Pune 411 007, India
 
Uncontrolled Index Term Solar cell material synthesis
CZTS; Nanoflakes; UV-Visible; XRD; Raman spectroscopy; TEM; FESEM
 
Summary, etc. The influence of cyclic microwave irradiation and effect of Cu concentration has been investigated for synthesis of pure phase Cu<sub>2</sub>ZnSnS<sub>4 </sub>powder. It has been observed that Cu concentration plays a vital role to get pure phase Cu<sub>2</sub>ZnSnS<sub>4</sub>. The optical properties, phase purity, crystallographic structure and morphology have been investigated by spectroscopic and microscopic techniques. The results reveal that single phase kesterite Cu<sub>2</sub>ZnSnS<sub>4 </sub>with no other secondary phase can be obtained by precisely controlling the cyclic microwave irradiation time and the precursor concentrations. The optical band gap of prepared Cu<sub>2</sub>ZnSnS<sub>4 </sub>powder, estimated from UV-Visible spectroscopy has been found to be ~ 1.45 eV which is superlative for photovoltaic application. Systematic Raman study confirms the formation of Cu<sub>2</sub>ZnSnS<sub>4</sub> phase and suppression of CuS peak with proper control in copper concentration. TEM image shows nanoflakes kind of morphology having thickness of flakes between 25 nm to 45 nm. Further the crystal inter-planer spacing is found to be 0.32 nm, which is consistent with the XRD data and ascribed to (112) plane.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2019-01-10 14:05:50
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/18953
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 57, ##issue.no## 1 (2019): Indian Journal of Pure & Applied Physics
 
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