Cu2ZnSn(S,Se)4 (CZTSSe) films were prepared on Mo coated soda lime glass substrates by sulfo-selenization of sputtered stacked Zn-Sn-Cu(CZT) precursor films. The precursor was dried in a capped state with aqueous NaOH solution. The CZT precursor films were sulfo-selenized in the S + Se vapor atmosphere. Sodium was doped during the sulfo-selenization treatment. The effect of sodium doping on the structural and electrical properties of the CZTSSe thin films were studied using FE-SEM(field-emission scanning electron microscopy), XRD(X-ray diffraction), XRF(X-ray fluorescence spectroscopy), dark current, SIMS(secondary ion mass spectrometry), conversion efficiency. The XRD, XRF, FE-SEM, Dark current, SIMS and cell efficiency results indicated that the properties of sulfo-selenized CZTSSe thin films were strongly related to the sodium doping. Further detailed analysis and discussion for effect of sodium doping on the properties CZTSSe thin films will be discussed.

Abstract
 1. 서 론
 2. 실험 방법
 3. 결과 및 고찰
 4. 결 론
 References

• 심홍재(신소재공학과, 광전자융합기술연구소, 전남대학교) | Hongjae Shim (Department of Materials Science and Engineering, Chonnam National University)
• 김지훈(신소재공학과, 광전자융합기술연구소, 전남대학교) | Jihun Kim (Department of Materials Science and Engineering, Chonnam National University)
• 강명길(신소재공학과, 광전자융합기술연구소, 전남대학교) | MyungGil Gang (Department of Materials Science and Engineering, Chonnam National University)
• 김진혁(신소재공학과, 광전자융합기술연구소, 전남대학교) | Jinhyeok Kim (Department of Materials Science and Engineering, Chonnam National University) Corresponding author