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

THIN SOLID FILMS

卷:653

Article

Dhas, C. Ravi¹  Christy, A. Jennifer¹  Venkatesh, R.¹  Panda, Subhendu K.²  Subramanian, B.²  Ravichandran, K.³  Sudhagar, P.⁴  Raj, A. Moses Ezhil⁵ 

[1] Bishop Heber Coll Autonomous, PG & Res Dept Phys, Tiruchirappalli 620017, Tamil Nadu, India

[2] CSIR, Cent Electrochem Res Inst CECRI, Karaikkudi 630006, Tamil Nadu, India

[3] AVVM Sri Pushpam Coll, Dept Phys, Thanjavur 613503, Tamil Nadu, India

[4] Swansea Univ, Coll Engn, SPECIFIC, Photocatalyst & Coatings Grp, Bay Campus, Swansea SA1 8EN, W Glam, Wales

[5] Scott Christian Coll, Dept Phys, Nagercoil 629003, Tamil Nadu, India

关键词: Thickness;    Copper indium gallium sulfide;    Nebulizer spray;    Counter electrode;    Dye-sensitized solar cells;   

DOI  :  10.1016/j.tsf.2018.03.017

来源: Elsevier

【 摘 要 】

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 degrees 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-/I-3(-)) 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.

【 授权许可】

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