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In this paper transmission-mode GaN photocathodes was activated by Cs/O, its quantum efficiency curve and the factors which influenced the quantum efficiency mostly were studied. Transmission-mode GaN photocathodes was grown by Metal-Organic Chemical Vapor Deposition (MOCVD).
Summary form only given. Recent progress in Gallium Nitride (GaN, AlGaN, InGaN) photocathodes show great promise for future ultraviolet (UV) detector applications. Stability has been one main performance parameters for photocathode. The photoemission decay characteristics of GaN photocathode after the end of activation in ultra-high vacuum system was investigated using photocurrent and spectral response...
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