Electric Field Assisted Spray Deposited Indium Doped Zinc Oxide Nano Structure TCO Thin Film for Self-Cleaning Window and Electron Transport Layer for Inverted Organic Solar Cell Application
Anuj kumar a, Sanjay kumar swami a, Neha Chaturvedi  a, Viresh Dutta a
a IIT National Institute of Technology, Delhi, India
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Swansea, United Kingdom, 2016 June 29th - July 1st
Organizers: James Durrant, Henry Snaith and David Worsley
Poster, Anuj kumar, 284
Publication date: 28th March 2016

Inverted organic solar cells are very stable as compared to conventional organic solar cells [1]. Robert et al. reported 200 days stable IOSC using ZnO layer as the electron transport layer [2]. Transparent conducting indium doped zinc oxide (IZO) thin films were deposited on glass substrate by using spray technique with a voltage applied between the nozzle and an electrode placed below the nozzle. It was found that the presence of an electric field during the spray deposition has a strong effect on doping efficiency, structural and electrical properties.  Incorporation of Indium was confirmed by the Rutherford back scattering (RBS). The conductivity of IZO film was measured by the conducting atomic force microscope (C-AFM) technique. The contact angle (CA) is governed by the surface roughness and lowering the surface energy.  In this research hydrophobic nano structured Indium doped zinc oxide film used for the self-cleaning window of solar modules [3,4]. The contact angle of films was controlled by the applied DC voltage. Under the electric field and without electric field spray deposited nano structure IZO film (ultra-thin film) show the contact angle 149°  (near the super hydrophobicity) and 130° respectively. Therefore, improved structural, electrical and optical properties of IZO film under a high electric field can be used as an electron transport layer in inverted organic solar cell and one-sided IZO film can be used as a self-cleaning window for solar cells.

References:

[1] T. Y. Chu, S. W. Tsang, J. Zhou, P. G. Verly, J. Lu, S. Beaupre, M. Leclerc and Y. Tao, Sol. Energy Mater. Sol. Cells 96 (2012) 155.  

[2]   R. L. Z. Hoye, D. M. Rojas, D. C. Iza, K. P. Musselman and J. L. M. Driscoll, Sol. Energy Mater. Sol. Cells 116 (2013) 197.    

[3]  Verma, L.K.; Sakhuja, M; Son, J; Danner, A. J.; Yang, H; Zeng, H. C.; Bhatia, C. S.  Renew. Energ. 2011, 36,2489-2493.  

 [4]  Son, J.; Kundu, S.; Verma, L. K.; Sakhuja, M.; Danner, A. J.; Bhatia, C. S.; Yang. H. A.  Sol. Energ. Mat. Sol. C., 2012, 98, 46-51. 

 



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