Zhuang Chu-nan, Xu Jia-xiong, Lin Jun-hui. Numerical Analysis of Contact Characteristics between CZTSSe Thin Film and Mo Back Electrode[J]. 2020, 37(3): 106-113.
Zhuang Chu-nan, Xu Jia-xiong, Lin Jun-hui. Numerical Analysis of Contact Characteristics between CZTSSe Thin Film and Mo Back Electrode[J]. 2020, 37(3): 106-113.DOI: 10.12052/gdutxb.190104.
Numerical Analysis of Contact Characteristics between CZTSSe Thin Film and Mo Back Electrode
In order to analyze the back electrode contact characteristics of CZTSSe thin film solar cells
the CZTSSe/Mo(S
Se)
2
/Mo structure was simulated by AFORS-HET v2.5 software. The effects of the band gap
E
g
and the electron affinity of CZTSSe and the thickness and the band gap of Mo(S
Se)
2
interface layer on the electrical contact characteristics between CZTSSe and Mo electrodes were investigated. The results show that the increases of the band gap and electron affinity of CZTSSe make the ohmic contact of CZTSSe/Mo(S
Se
)
2
/Mo weaken and transform to the rectifying contact. For CZTSSe with a narrow band gap
the addition of the interface layer causes the ohmic contact formed by CZTSSe/Mo(S
Se)
2
/Mo to be converted into a rectifying contact. As the thickness of the interface layer increases
the rectifying contact weakens. For CZTSSe with a wide band gap
the addition of a 2 nm interface layer enhances the rectifying contact formed by CZTSSe/Mo(S
Se)
2
/Mo. As the thickness of the interface layer increases
the rectifying contact weakens. When the work function of CZTSSe is low
CZTSSe/Mo(S
Se)
2
/Mo forms an ohmic contact
and the optimal electrical contact characteristics can be obtained by controlling the thickness of the interface layer to about 100 nm.
关键词
Keywords
references
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