The controllable deposition of large area roll-to-roll sputtered ito thin films for photovoltaic applications

• DOI: 10.1016/j.renene.2019.07.038
• Publication Date: 2019-07-09T06:03:23Z
• Authors: Yasemin Demirhan; Hasan Koseoglu; Fulya Turkoglu; Zemzem Uyanik; Mehtap Ozdemir; Gulnur Aygun; Lutfi Ozyuzer
• Keywords: spectroscopy; systemsFigure of merit (FOM); Energy & Fuels; Optical films; Thin films; Transparent conducting oxides (TCO); substrate; 02 engineering and technology; Figure of merit (FOM); Indium; deposition; 7. Clean energy; Light emission; Figure; Fabrication; Improvement; Organic solar-cells; Optical emission spectroscopies (OES); Transparent conducting oxides; Green & Sustainable Science & Technology; Dependence; Deposition; Electrical-properties; Large area roll to roll sputtering; Roll to Roll; Flexible electrodes for photovoltaics; Optical properties; Plastic bottles; partial pressure; Indium Tin Oxide | ITO (semiconductor) | Oxide Film; Conductive films; electrode; Energy gap; DC magnetron sputtering systems; Photovoltaics; photovoltaic system; ITO thin films; Optical emission spectroscopy; Oxygen partial pressure; oxide; Substrate; 0210 nano-technology; Tin-oxide-films; Polyethylene terephthalates (PET); electrical resistivity

Abstract In the present study, using a large area roll-to-roll DC magnetron sputtering system deposition of ITO thin films on polyethylene terephthalate (PET) substrates were achieved. In order to investigate the effect of growth conditions on the film properties all through the deposition process, optical emission spectroscopy (OES) analysis have been accomplished in a governable way. The consequences of Oxygen partial pressure and film thickness on electrical, and optical properties of the films were determined. It was shown that the intensity of optical emission peaks are subjected to the discharge power and as well as the O2/Ar flow ratio. Large area, uniform ITO films with relatively high transparency and low electrical resistivity (Rs˂50 Ω/sqr) were succesfully deposited on PET substrates. The significance of both the figure of merit (FOM) and the optical band gap values on the performance of different TCO thin films were addressed. In this work, the obtained results suggest that the overall performance is sufficient to implement the ITO films in photovoltaic and OLED applications.