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Effects of annealing and Nb doping on the electrical properties of p-Si/n-β-Ga2O3:Nb heterojunction

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Abstract

p-Si/n-β-Ga2O3:Nb heterojunctions were fabricated by RF magnetron sputtering of β-Ga2O3:Nb layers on the p-Si substrates. The effects of annealing and Nb doping on the properties of heterojunctions were studied. The crystallinity of the β-Ga2O3:Nb film was enhanced by annealing, which also improved the electrical properties of the heterojunctions. The Nb doping greatly affected the I–V characteristics of annealed heterojunctions. The ideality factor was calculated by performing plots from the forward bias I–V characteristics. The charge transport properties of the heterojunction were discussed. The activation energy of β-Ga2O3:Nb films were estimated based on the temperature dependence of resistance.

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Acknowledgements

This work was supported by National Natural Science Foundation of China (nos. 60876006 and 60376007), Funding for the development project of Beijing Municipal Education Commission of Science and Technology (Grant no. KZ201410005008), and Natural Science Foundation of Beijing City (no. 4102014).

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Authors and Affiliations

  1. College of Applied Sciences, Beijing University of Technology, Beijing, 100124, China

    Hao Zhang, Jinxiang Deng, Ping Duan, Ruidong Li, Zhiwei Pan, Zhiying Bai & Jiyou Wang

  2. College of Physics Science and Technology, Hebei University, Baoding, 071002, China

    Yafeng He & Xiaoyang Liang

  3. Beijing Key Lab of Microstructure and Property of Advanced Material, Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, 100124, China

    Changdong Qin

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  1. Hao Zhang
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  2. Jinxiang Deng
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Correspondence to Jinxiang Deng.

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Zhang, H., Deng, J., He, Y. et al. Effects of annealing and Nb doping on the electrical properties of p-Si/n-β-Ga2O3:Nb heterojunction. J Mater Sci: Mater Electron 29, 19028–19033 (2018). https://doi.org/10.1007/s10854-018-0028-7

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  • DOI: https://doi.org/10.1007/s10854-018-0028-7

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