Characterization of CuInS2 Thin Films Grown by Transducer-based Ultrasonic Spray Pyrolysis for PV Solar Cells Applications

Characterization of CuInS2 Thin Films Grown by Transducer-based Ultrasonic Spray Pyrolysis for PV Solar Cells Applications

Eric Nguwuo Petuenju Oumarou Savadogo

Laboratory of New Materials for Energy and Electrochemistry systems (LaNoMat), Metallurgical Program, Ecole Polytechnique of Montreal, 2900, boul. Édouard-Montpetit, Campus de l'Université de Montréal 2500, chemin de Polytechnique Montréal (Québec), H3T 1J4

Corresponding Author Email: 
oumarou.savadogo@polymtl.ca, eric.nguwuo-petuenju@polymtl.ca
Page: 
169-179
|
DOI: 
https://doi.org/10.14447/jnmes.v19i3.329
Received: 
20 January 2016
|
Accepted: 
06 March 2016
|
Published: 
31 August 2016
| Citation
Abstract: 

For the first time, the elaboration of CuInS2 thin films was achieved using the transducer-based ultrasonic spray pyrolysis method with methanol as solvent. Precursor solutions were prepared with copper dichloride dihydrate [CuCl2.2H2O], indium (III) chloride tetrahydrate [InCl3.4H2O] and thiourea [SC(NH2)2] at different ratios. In2S3 clusters (μdots) were obtained from an aqueous solution with precursors ratio Cu:In:S = 1.3:1:3.9, 1.4:1:3.9, 1.5:1:3.9. CuInS2 thin films were obtained from a solution of methanol with precursors ratio Cu:In:S = 1:1:4. The In concentration was 3 x 10-3 mol/l. The crystalline structure and their morphology ware characterised by SEM and their chemical composition by EDAX, The bandgap of CuInS2, equals to 1.40 eV, was determined by spectrophotometry.

Keywords: 

ultrasonic spray pyrolysis, thin films, copper indium disulphide, extremely thin absorbers (ETA), micro-dots, solar cell

1. Introduction
2. Experimental Details
3. Results and Discussion
4. Conclusion
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