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author:

Wu, Xinkun (Wu, Xinkun.) [1] (Scholars:吴新坤) | Liu, Wei (Liu, Wei.) [2] | Cheng, Shuying (Cheng, Shuying.) [3] (Scholars:程树英) | Lai, Yunfeng (Lai, Yunfeng.) [4] (Scholars:赖云锋) | Jia, Hongjie (Jia, Hongjie.) [5]

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Abstract:

Sn/Cu/ZnS precursor were deposited by evaporation on soda lime glass at room temperature, and then polycrystalline thin films of Cu 2ZnSnS4 (CZTS) were produced by sulfurizing the precursors in a sulfur atmosphere at a temperature of 550 °C for 3 h Fabricated CZTS thin films were characterized by X-ray diffraction, energy dispersive X-ray spectroscopy, ultraviolet-visible-near infrared spectrophotometry, the Hall effect system, and 3D optical microscopy. The experimental results show that, when the ratios of [Cu]/([Zn] + [Sn]) and [Zn]/[Sn] in the CZTS are 0.83 and 1.15, the CZTS thin films possess an absorption coefficient of larger than 4.0 × 104 cm-1 in the energy range 1.5-3.5 eV, and a direct band gap of about 1.47 eV. The carrier concentration, resistivity and mobility of the CZTS film are 6.98 × 1016 cm-3, 6.96 Ωcm, and 12.9 cm2/(Vs), respectively and the conduction type is p-type. Therefore, the CZTS thin films are suitable for absorption layers of solar cells. © 2012 Chinese Institute of Electronics.

Keyword:

Electric properties Evaporation Near infrared spectroscopy Optical microscopy Optical properties Phase transitions Thermal evaporation Thin films Tin X ray diffraction X ray spectroscopy Zinc

Community:

  • [ 1 ] [Wu, Xinkun]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou 350108, China
  • [ 2 ] [Liu, Wei]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou 350108, China
  • [ 3 ] [Cheng, Shuying]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou 350108, China
  • [ 4 ] [Lai, Yunfeng]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou 350108, China
  • [ 5 ] [Jia, Hongjie]College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou 350108, China

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Source :

Journal of Semiconductors

ISSN: 1674-4926

CN: 11-5781/TN

Year: 2012

Issue: 2

Volume: 33

4 . 8 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 40

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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