Mo 유연기판을 이용한 Cu2SnS3 박막 태양전지의 셀레늄 도핑 효과

이인재; 조은애; 장준성; 이병훈; 이동민; 강창현; 문종하; In Jae Lee; Eunae Jo; Jun Sung Jang; Byeong Hoon Lee; Dong Min Lee; Chang Hyun Kang; Jong Ha Moon

Korean Journal of Materials Research, Vol.30, No.2, 68-73, February, 2020

DOI10.3740/MRSK.2020.30.2.68 Export Citation

Mo 유연기판을 이용한 Cu2SnS3 박막 태양전지의 셀레늄 도핑 효과

Effect of Selenium Doping on the Performance of Flexible Cu2SnS3(CTS) Thin Film Solar Cells

이인재¹, 조은애¹, 장준성¹, 이병훈¹, 이동민¹, 강창현², 문종하^{1, 2, †}

¹전남대학교 신소재공학부
²전남대학교 광공학협동과정

In Jae Lee¹, Eunae Jo¹, Jun Sung Jang¹, Byeong Hoon Lee¹, Dong Min Lee¹, Chang Hyun Kang², and Jong Ha Moon^{1, 2, †}

¹Department of Materials Science and Engineering, Chonnam National University, 77 Youngbong-ro, Puk-Gu, Gwangju 61005, Republic of Korea
²Interdisciplinary Program for Photonic Engineering, Chonnam National University, 77 Youngbong-ro, Puk-Gu, Gwangju 61005, Republic of Korea

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Due to its favorable optical properties, Cu2SnS3 (CTS) is a promising material for thin film solar cells. Doping, which modifies the absorber properties, is one way to improve the conversion efficiency of CTS solar cells. In this work, CTS solar cells with selenium doping were fabricated on a flexible substrate using sputtering method and the effect of doping on the properties of CTS solar cells was investigated. In XRD analysis, a shift in the CTS peaks can be observed due to the doped selenium. XRF analysis confirmed the different ratios of Cu/Sn and (S+Se)/(Cu+Sn) depending on the amount of selenium doping. Selenium doping can help to lower the chemical potential of sulfur. This effectively reduces the point defects of CTS thin films. Overall improved electrical properties were observed in the CTS solar cell with a small amount of selenium doping, and a notable conversion efficiency of 1.02 % was achieved in the CTS solar cell doped with 1 at% of selenium.

Keywords:Cu2SnS3(CTS);thin film solar cell;sputtering;flexible substrate;Mo foil

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[3] Lokhande AC, Chalapathy RBV, He M, Jo E, Gang M, Pawar SA, Lokhande CD, Kim JH, Sol. Energy Mater. Sol. Cells, 153, 84 (2016)

[4] Dahman H, Rabaoui S, Alyamani A, Mir LE, Vacuum, 101, 208 (2014)

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[6] Chantana J, Suzuki K, Minemoto T, Sol. Energy Mater. Sol. Cells, 168, 207 (2017)

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[8] Sunny G, Thomas T, Deepu DR, Kartha CS, Vijayakumar KP, Optik, 144, 263 (2017)

[9] Zhang Q, Deng H, Yu J, Xu B, Tao J, Yang P, Chu J, Mater. Lett., 228, 447 (2018)

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[11] Umehara M, Tajima S, Aoki Y, Takeda Y, Motohiro T, APEX, 9, 072301 (2016)

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