Physical and optical properties of In2S3 thin films deposited by thermal evaporation technique for CIGS solar cells

Nowshad Amin, Mohammad Hossain, Nur Radhwa Hamzah, Puvaneswaran Chelvanathan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Indium sulphide is an promising buffer material with higher bandgap for CIGS solar cells. Promising results on the optical properties and morphology of deposited InxSy were found. In2S3 thin films were deposited onto glass substrates using thermal evaporation technique. Indium (In) and sulphur (S) powder were evaporated with different In/S ratio, where the stoichiometry and non-stoichiometry composition of InxSy influenced the optical bandgap and surface morphology. The films were structurally and optically characterized by X-ray diffraction, atomic force microscopy and UV measurements. It has been found that, the optical direct bandgap varied from 2.3 eV to 2.5 eV with the different composition ratio of InxSy. The X-ray diffraction data shows that the films have cubic β-In2S3 structure onto the glass substrates. AFM images illustrate the surfaces quite smooth and uniform with a low surface roughness. These results can be explained in the practical work as non-stoichiometric composition of indium sulphide may result in different band gaps. Hence, a specific stoichiometric composition which results in the highest band gap is desirable to achieve high efficiency InxS y-CIGS solar cell. This is due to the lesser photon loss in the buffer layer as the light passes into the absorber layer. From the fabrication results, numerous influences of In2S3 buffer layer are investigated that can be implemented to the fabrication of high efficiency CIGS solar cells.

Original languageEnglish
Title of host publication2011 IEEE 1st Conference on Clean Energy and Technology, CET 2011
Pages63-67
Number of pages5
DOIs
Publication statusPublished - 2 Nov 2011
Externally publishedYes
Event2011 IEEE 1st Conference on Clean Energy and Technology, CET 2011 - Kuala Lumpur, Malaysia
Duration: 27 Jun 201129 Jun 2011

Other

Other2011 IEEE 1st Conference on Clean Energy and Technology, CET 2011
CountryMalaysia
CityKuala Lumpur
Period27/6/1129/6/11

Fingerprint

Thermal evaporation
Solar cells
Energy gap
Indium sulfide
Optical properties
Physical properties
Thin films
Buffer layers
Chemical analysis
Indium
Fabrication
X ray diffraction
Glass
Optical band gaps
Substrates
Stoichiometry
Surface morphology
Atomic force microscopy
Sulfur
Photons

Keywords

  • buffer layer
  • CIGS solar cells
  • Indium Sulphide
  • Thermal evaporation

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

Cite this

Amin, N., Hossain, M., Hamzah, N. R., & Chelvanathan, P. (2011). Physical and optical properties of In2S3 thin films deposited by thermal evaporation technique for CIGS solar cells. In 2011 IEEE 1st Conference on Clean Energy and Technology, CET 2011 (pp. 63-67). [6041437] https://doi.org/10.1109/CET.2011.6041437

Physical and optical properties of In2S3 thin films deposited by thermal evaporation technique for CIGS solar cells. / Amin, Nowshad; Hossain, Mohammad; Hamzah, Nur Radhwa; Chelvanathan, Puvaneswaran.

2011 IEEE 1st Conference on Clean Energy and Technology, CET 2011. 2011. p. 63-67 6041437.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Amin, N, Hossain, M, Hamzah, NR & Chelvanathan, P 2011, Physical and optical properties of In2S3 thin films deposited by thermal evaporation technique for CIGS solar cells. in 2011 IEEE 1st Conference on Clean Energy and Technology, CET 2011., 6041437, pp. 63-67, 2011 IEEE 1st Conference on Clean Energy and Technology, CET 2011, Kuala Lumpur, Malaysia, 27/6/11. https://doi.org/10.1109/CET.2011.6041437
Amin N, Hossain M, Hamzah NR, Chelvanathan P. Physical and optical properties of In2S3 thin films deposited by thermal evaporation technique for CIGS solar cells. In 2011 IEEE 1st Conference on Clean Energy and Technology, CET 2011. 2011. p. 63-67. 6041437 https://doi.org/10.1109/CET.2011.6041437
Amin, Nowshad ; Hossain, Mohammad ; Hamzah, Nur Radhwa ; Chelvanathan, Puvaneswaran. / Physical and optical properties of In2S3 thin films deposited by thermal evaporation technique for CIGS solar cells. 2011 IEEE 1st Conference on Clean Energy and Technology, CET 2011. 2011. pp. 63-67
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