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http://dx.doi.org/10.3740/MRSK.2020.30.6.285

Characteristics of an AZO/Ag/AZO Transparent Conducting Electrode Fabricated by Magnetron Sputtering for Application in Cu2ZnSn(S,Se)4 (CZTSSe) Solar Cells  

Lee, Dong Min (Department of Materials Science and Engineering, Chonnam National University)
Jang, Jun Sung (Department of Materials Science and Engineering, Chonnam National University)
Kim, Jihun (School of Integrated Technology, Gwangju Institute of Science and Technology)
Lee, InJae (Department of Materials Science and Engineering, Chonnam National University)
Lee, Byeong Hoon (Department of Materials Science and Engineering, Chonnam National University)
Jo, Eunae (Department of Materials Science and Engineering, Chonnam National University)
Kim, Jin Hyeok (Department of Materials Science and Engineering, Chonnam National University)
Publication Information
Korean Journal of Materials Research / v.30, no.6, 2020 , pp. 285-291 More about this Journal
Abstract
Recent advances in technology using ultra-thin noble metal film in oxide/metal/oxide structures have attracted attention because this material is a promising alternative to meet the needs of transparent conduction electrodes (TCE). AZO/Ag/AZO multilayer films are prepared by magnetron sputtering for Cu2ZnSn(S,Se)4 (CZTSSe) of kesterite solar cells. It is shown that the electrical and optical properties of the AZO/Ag/AZO multilayer films can be improved by the very low resistivity and surface plasmon effects due to the deposition of different thicknesses of Ag layer between oxide layers fixed at AZO 30 nm. The AZO/Ag/AZO multilayer films of Ag 15 nm show high mobility of 26.4 ㎠/Vs and low resistivity and sheet resistance of 3.58⁎10-5 Ωcm and 5.0 Ω/sq. Also, the AZO/Ag (15 nm)/AZO multilayer film shows relatively high transmittance of more than 65 % in the visible region. Through this, we fabricated CZTSSe thin film solar cells with 7.51 % efficiency by improving the short-circuit current density and fill factor to 27.7 mV/㎠ and 62 %, respectively.
Keywords
AZO/Ag/AZO; Oxide/Metal/Oxide (O/M/O); transparent conducting electrode; Ag thickness; thin films;
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