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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.9
- 수록면
- 84 - 95 (12page)
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The power conversion efficiency of Cu₂ZnSnSe₄ (CZTSe) solar cells depends on the absorber layer thickness; however, changes in the characteristics of the cells with varying absorber layer thickness are unclear. In this study, we investigated the changes in the characteristics of CZTSe solar cells for varying absorber layer thickness. Five absorber thicknesses were employed: CZTSe1 2.78 μm, CZTSe2 1.01 μm, CZTSe3 0.55 μm, CZTSe4 0.29 μm, and CZTSe5 0.15-0.23 μm. The efficiency of the CZTSe solar cells decreased as the absorber thickness decreased, resulting in power conversion efficiencies of 10.45% (CZTSe1), 8.67% (CZTSe2), 7.14% (CZTSe3), 3.44% (CZTSe4), and 1.54% (CZTSe5). As the thickness of the CZTSe absorber layer decreased, the electron-hole recombination at the grain boundaries and the absorber-back-contact interface increased. This caused an increase in the current loss, owing to light loss in the long-wavelength region. In addition, as the thickness of the CZTSe absorber layer decreased, more ZnSe was produced, and the resulting defects and defect clusters led to an open-circuit voltage loss.
목차
ABSTRACT
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusion
References
참고문헌 (45)
참고문헌 신청
C. Wadia / 2009 / Materials availability expands the opportunity for large-scale photovoltaics deployment / Environ. Sci. Technol. 45:2072~2077
D. -H. Son / 2019 / Effect of solid-H2S gas reactions on CZTSSe thin film growth and photovoltaic properties of a 12.62% efficiency device / J. Mater. Chem. A 7:25279~25289
W. Wang / 2014 / Device characteristics of CZTSSe thin-film solar cells with 12.6% efficiency / Adv. Energy Mater. 4:1301465
K. -J. Yang / 2016 / A band-gapgraded CZTSSe solar cell with 12.3% efficiency / J. Mater. Chem. A 4:10151~10158
Y. S. Lee / 2015 / Cu2ZnSnSe4 thin-film solar cells by thermal coevaporation with 11.6% efficiency and improved minority carrier diffusion length / Adv. Energy Mater. 5:1401372
D. -H. Son / 2019 / Effect of solid-H2S gas reactions on CZTSSe thin film growth and photovoltaic properties of a 12.62% efficiency device / J. Mater. Chem. A 7:25279~25289
W. Wang / 2014 / Device characteristics of CZTSSe thin-film solar cells with 12.6% efficiency / Adv. Energy Mater. 4:1301465
K. -J. Yang / 2016 / A band-gapgraded CZTSSe solar cell with 12.3% efficiency / J. Mater. Chem. A 4:10151~10158
Y. S. Lee / 2015 / Cu2ZnSnSe4 thin-film solar cells by thermal coevaporation with 11.6% efficiency and improved minority carrier diffusion length / Adv. Energy Mater. 5:1401372
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