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Low-cost and eco-friendly nebulizer spray coated CuInAlS 2 counter electrode for dye-sensitized solar cells

C. Ravi Dhas, A. Jennifer Christy, R. Venkatesh, Esther Santhoshi Monica S., Subhendu K. Panda, B. Subramanian, K. Ravichandran, P. Sudhagar, A. Moses Ezhil Raj, Sudhagar Pitchaimuthu Orcid Logo

Physica B: Condensed Matter, Volume: 537, Pages: 23 - 32

Swansea University Author: Sudhagar Pitchaimuthu Orcid Logo

Abstract

CuInAlS2 thin films for different substrate temperatures were deposited by a novel nebulizer spray technique. The polycrystalline CIAS thin film exhibited tetragonal structure with the preferential orientation of (1 1 2) plane. Nanoflakes were observed from the surface morphology of CIAS film. The p...

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Published in: Physica B: Condensed Matter
ISSN: 09214526
Published: 2018
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa38389
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Abstract: CuInAlS2 thin films for different substrate temperatures were deposited by a novel nebulizer spray technique. The polycrystalline CIAS thin film exhibited tetragonal structure with the preferential orientation of (1 1 2) plane. Nanoflakes were observed from the surface morphology of CIAS film. The peak position of core level spectra confirms the presence of CuInAlS2 from XPS analysis. The absorbance spectra and optical band gap were observed from the optical property. The activation energy, carrier concentration, hole mobility and resistivity were determined by linear four probe and Hall effect measurements. The CIAS film was used as a counter electrode (CE) in dye-sensitized solar cells (DSSCs) and is characterized by cyclic voltammetry, electrochemical impedance spectroscopy and Tafel measurements. DSSC fabricated with the CIAS CE achieved the photo conversion efficiency of about 2.55%.
Keywords: CIAS; Nebulizer spray; XPS; Counter electrode; Dye-sensitized solar cells
College: College of Engineering
Start Page: 23
End Page: 32