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Photovoltaic and dielectric properties of Bi2S3 thin films deposited by spray pyrolysis technique
被引:0
|作者:
Amara, Z.
[1
]
Khadraoui, M.
[1
]
Miloua, R.
[1
]
Amroun, M. N.
[1
]
Sahraoui, K.
[1
]
机构:
[1] Univ Djillali Liabes Sidi Bel Abbes, Dept Elect, Lab Elaborat & Caracterisat Mat LECM, BP89, Sidi Bel Abbes 22000, Algeria
来源:
JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS
|
2020年
/
22卷
/
3-4期
关键词:
Bi2S3;
Thin films;
Dielectric properties;
Spray pyrolysis;
AC CONDUCTIVITY;
ELECTRICAL-PROPERTIES;
SOLAR-CELLS;
RELAXATION;
MECHANISM;
NANOSTRUCTURES;
CRYSTALLINE;
ABSORPTION;
IMPEDANCE;
TRANSPORT;
D O I:
暂无
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Bismuth sulfide Bi2S3 thin films were deposited by Spray Pyrolysis method at 260 degrees C. X-Ray Diffraction has been used to investigate the crystalline structure and the crystallite size of Bi2S3 thin films. The optical band gap has been determined by UV-VIS-NIR spectrophotometry. Using the measured absorption coefficient data, we estimated the expected absorption capacity and photocurrent of the thin films. The deposited thin films yield a maximum photocurrent of 33.6 mA/cm(2). Hall-effect measurements showed that Bi2S3 thin films have a lower value of resistivity of 2.82x10(-2) Omega cm. This value is optimal for the improvement of solar cells based Bi2S3 thin films. AC conductivity obeys to the relation A omega(s). The decrease of the exponent S with temperature reveals to understand the behavior hopping model CBH. The density of states N(Ef) was in order of 10(18) eV(-1) cm(-3).
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页码:163 / 170
页数:8
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