Nebulizer spray-deposited CuInGaS2 thin films, a viable candidate for counter electrode in dye-sensitized solar cells

et al. 2018

Thin Solid Films

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CuInGaS2 (CIGS) thin films were coated using nebulizer spray technique for different solvent volumes (10, 30, 50 and 70 ml) at the substrate temperature of 350 °C. The structural, optical and electrical properties were studied for the prepared CIGS thin films. CIGS thin films exhibited tetragonal structure and the maximum crystallite size was calculated for the film deposited using 50 ml solvent volume. The surface morphology of CIGS thin films was analyzed from scanning electron microscopy and atomic force microscopy studies. The electrical parameters of CIGS thin films such as resistivity, carrier concentration and mobility were examined using four probe method and Hall measurements. Electrocatalytic activities of the CIGS films towards redox couple (I-/I3-) were analyzed by cyclic voltammograms, electrochemical impedance spectroscopy, and Tafel polarization measurements. The high photocurrent efficiency was obtained for the CIGS counter electrode prepared using 50 ml solvent volume.

Section: Accepted Manuscriptmentioning

confidence: 84%

Solvent volume dependent physical properties and electrocatalytic ability of nebulizer spray deposited CuInGaS2 counter electrode for dye-sensitized solar cells

Dhas¹,

Christy²,

et al. 2018

Thin Solid Films

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“…No other peaks related to secondary phases were observed in the XRD patterns, suggesting that all the prepared samples have the same pure monoclinic structure. The average crystallite size was calculated using the Scherrer formula [31];…”

Section: Resultsmentioning

confidence: 99%

Effect of pH on visible-light-driven photocatalytic degradation of facile synthesized bismuth vanadate nanoparticles

Josephine¹,

Dhas²,

et al. 2020

Mater. Res. Express

Bismuth vanadate (BiVO 4 ) nanoparticles were synthesized by a simple co-precipitation method for different pH conditions (9, 10 and 11). The XRD patterns revealed that the synthesized nanoparticles belong to monoclinic single-phase BiVO 4 which was again confirmed from Raman studies. The chemical state of the elements in BiVO 4 and surface morphology were investigated using XPS and SEM analysis respectively. The optical absorption and PL studies revealed wide absorption in the visible region with strong emission at 520 nm. The efficiency of the samples was examined from the photocatalytic degradation of Rhodamine B dye.

“…The different crystalline parameters of CIAS thin film like crystallite size (D), microstrain (ε), dislocation density (δ), and lattice parameters ('a' & 'c') are determined from the following the relations [21,26],…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

“…A simple and cheap method is required for manufacturing commercial solar cell devices on a large scale. Nebulizer spray method is simple, cost-effective and more advanced compared to conventional spray in preparing functional thin film coatings for different technical applications [20,21]. The precise control of droplets size has the ability to produce good adherent, pinhole-free nanostructured film which is more advantageous over conventional spray method [22].…”

Section: Introductionmentioning

confidence: 99%

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

Dhas¹,

Christy²,

Physica B: Condensed Matter

et al. 2018

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