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  1. No Access

    Article

    Comparison of GaAs photocathode grown by MOCVD and MBE: a first-principle and experimental research

    Negative electron affinity GaAs photocathode is made from p-type doped photocathode, and the p-type GaAs photocathode is commonly doped by Be or Zn atoms. To investigate the do** differences of the two dopan...

    Yuan Xu, Benkang Chang, Liang Chen… in Journal of Materials Science: Materials in… (2017)

  2. No Access

    Article

    Theoretical study on electronic and optical properties of Zn-doped In0.25Ga0.75As photocathodes

    First-principles calculations for intrinsic and Zn-doped In0.25Ga0.75As are performed based on density functional theory to study the influence of Zn do** on electronic and optical properties. The band structur...

    Muchun **, Benkang Chang, **g Guo, Hongchang Cheng in Optical Review (2016)

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    Article

    Cesium, oxygen coadsorption on AlGaN(0001) surface: experimental research and ab initio calculations

    Cs, O activation experiment of Al0.24Ga0.76N photocathodes was carried out and the photocurrent variation was recorded. Then first principle calculations were performed to study Cs, O coadsorption on Al0.25Ga0.75

    Mingzhu Yang, Benkang Chang, Meishan Wang in Journal of Materials Science: Materials in… (2015)

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    Chapter and Conference Paper

    Analysis of Image Intensifiers Halo Effect with Curve Fitting and Separation Method

    In order to probe into the halo effect for image intensifiers, we have deduced the fitted formula for the gray value distribution (GVD) of pixels on a centerline through the center point of halo images by the ...

    Ling Ren, Feng Shi, Hui Guo, DongXu Cui… in Unifying Electrical Engineering and Electr… (2014)