Synthesis, structure, optical, and electric properties of Ce-doped CuInTe2 compound

doi:10.1088/1674-1056/23/12/127801

›› 2014, Vol. 23 ›› Issue (12): 127801-127801.doi: 10.1088/1674-1056/23/12/127801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Synthesis, structure, optical, and electric properties of Ce-doped CuInTe₂ compound

付丽, 郭永权

School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

收稿日期:2014-05-04 修回日期:2014-07-14 出版日期:2014-12-15 发布日期:2014-12-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11274110).

Synthesis, structure, optical, and electric properties of Ce-doped CuInTe₂ compound

Fu Li (付丽), Guo Yong-Quan (郭永权)

School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

Received:2014-05-04 Revised:2014-07-14 Online:2014-12-15 Published:2014-12-15
Contact: Guo Yong-Quan E-mail:yqguo@ncepu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11274110).

摘要/Abstract

摘要： Ce-doped CuInTe₂ (CICT) semiconducting compounds are successfully synthesized. The phase structures, optical, and electric properties are investigated using powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectrometer (XPS), Raman spectrometer, ultraviolet and visible spectrophotometer (UV-Vis), and a standard four-probe method. CuIn_1-xCe_xTe₂ crystallizes into a tetragonal structure with predominant orientation along the [112] direction. The lattice parameters are a=6.190(6) Å–6.193(0) Å and c=12.406(5) Å–12.409(5) Å. Ce prefers to occupy the 4b crystal position. According to the analysis of XPS spectra, Ce shows the mixture of valences 4+ and 3+. Raman spectra reveal that the photon vibrating model in the CICT follows A₁ mode in a wavenumber range of 123 cm^-1–128 cm^-1. UV-Vis spectra show that the band gap E_g values before and after 0.1 mole Ce doped into CuInTe₂ are 1.28 eV and 1.16 eV, respectively. It might be due to the mixture of valences for Ce. Ce doped into CuInTe₂ still shows the semiconductor characteristics.

关键词: CuIn_1-xCe_xTe₂, chalcopyrite, Raman spectrum, band gap, semiconductor

Abstract: Ce-doped CuInTe₂ (CICT) semiconducting compounds are successfully synthesized. The phase structures, optical, and electric properties are investigated using powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectrometer (XPS), Raman spectrometer, ultraviolet and visible spectrophotometer (UV-Vis), and a standard four-probe method. CuIn_1-xCe_xTe₂ crystallizes into a tetragonal structure with predominant orientation along the [112] direction. The lattice parameters are a=6.190(6) Å–6.193(0) Å and c=12.406(5) Å–12.409(5) Å. Ce prefers to occupy the 4b crystal position. According to the analysis of XPS spectra, Ce shows the mixture of valences 4+ and 3+. Raman spectra reveal that the photon vibrating model in the CICT follows A₁ mode in a wavenumber range of 123 cm^-1–128 cm^-1. UV-Vis spectra show that the band gap E_g values before and after 0.1 mole Ce doped into CuInTe₂ are 1.28 eV and 1.16 eV, respectively. It might be due to the mixture of valences for Ce. Ce doped into CuInTe₂ still shows the semiconductor characteristics.

Key words: CuIn_1-xCe_xTe₂, chalcopyrite, Raman spectrum, band gap, semiconductor

中图分类号: (Optical properties of bulk materials and thin films)

78.20.-e

61.50.-f (Structure of bulk crystals) 71.15.Ap (Basis sets (LCAO, plane-wave, APW, etc.) and related methodology (scattering methods, ASA, linearized methods, etc.)) 72.20.-i (Conductivity phenomena in semiconductors and insulators)

付丽, 郭永权. Synthesis, structure, optical, and electric properties of Ce-doped CuInTe₂ compound[J]. , 2014, 23(12): 127801-127801.

Fu Li (付丽), Guo Yong-Quan (郭永权). Synthesis, structure, optical, and electric properties of Ce-doped CuInTe₂ compound[J]. Chin. Phys. B, 2014, 23(12): 127801-127801.

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Synthesis, structure, optical, and electric properties of Ce-doped CuInTe₂ compound

Synthesis, structure, optical, and electric properties of Ce-doped CuInTe₂ compound

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