<trans-title>Effect of Rare-earth Variable-valence Element Eu doping on Thermoelectric Property of BiCuSeO</trans-title>

Huijun KANG; Xiaoying ZHANG; Yanxia WANG; Jianbo LI; Xiong YANG; Daquan LIU; Zerong YANG; Tongmin WANG

doi:10.15541/jim20190570

Journal of Inorganic Materials, Volume. 35, Issue 9, 1041(2020)

Effect of Rare-earth Variable-valence Element Eu doping on Thermoelectric Property of BiCuSeO

Huijun KANG¹, Xiaoying ZHANG¹, Yanxia WANG², Jianbo LI¹, Xiong YANG¹, Daquan LIU¹, Zerong YANG¹, and Tongmin WANG^1、*

¹Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China

²Key Laboratory of Material Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian 116024, China

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Figures & Tables(10)

1. XRD patterns for Bi_1-_xEu_xCuSeO samples

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$SEM images of the fracture surface of Bi1-xEuxCuSeO$

2. SEM images of the fracture surface of Bi_1-_xEu_xCuSeO

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3. XPS (a) total survey and (b) spectra of valence state of Eu²⁺/Eu³⁺for Bi_0.975Eu_0.025CuSeO sample

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4. Electronic bands and band gaps of Bi_1-_xEu_xCuSeO

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5. Carrier concentrations and mobilities of Bi_1-_xEu_xCuSeO samples varied with x at room temperature

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6. Temperature dependence of electrical transport properties of Bi_1-_xEu_xCuSeO samples

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7. Temperature dependence of thermal transport properties of Bi_1-_xEu_1-_xCuSeO samples

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8. Temperature dependences for ZT of Bi_1-_xEu_xCuSeO samples

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Table 1. Densities of Bi_1-_xEu_xCuSeO bulk samples
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Table 1. Densities of Bi_1-_xEu_xCuSeO bulk samples
Bi_1-_xEu_xCuSeO x=0 x=0.025 x=0.075 x=0.15
Density/(g·cm^-3) 6.888 8.421 8.43 8.257
Relative density 77.3% 94.5% 94.6% 92.6%

Table 1. Lattice parameters of Bi_1-_xEu_xCuSeO samples
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Table 1. Lattice parameters of Bi_1-_xEu_xCuSeO samples
a/nm c/nm
BiCuSeO 0.39354 0.89413
Bi_0.975Eu_0.025CuSeO 0.39358 0.89423
Bi_0.925Eu_0.075CuSeO 0.39355 0.89436
Bi_0.85Eu_0.15CuSeO 0.39354 0.89442

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Huijun KANG, Xiaoying ZHANG, Yanxia WANG, Jianbo LI, Xiong YANG, Daquan LIU, Zerong YANG, Tongmin WANG. Effect of Rare-earth Variable-valence Element Eu doping on Thermoelectric Property of BiCuSeO[J]. Journal of Inorganic Materials, 2020, 35(9): 1041

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