Structural Design and Experiment of Narrow-Band Response GaAlAs Photocathodes
Structural Design and Experiment of Narrow-Band Response GaAlAs Photocathodes
复制标题
窄带响应GaAlAs光电阴极的结构设计与实验
DOI:
10.1088/0256-307x/33/2/027801
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发表时间:
2016-02
影响因子:
3.5
通讯作者:
Chang, Ben-Kang
中科院分区:
文献类型:
--
作者:
Yu, Hui-Long;Zhang, Yi-Jun;Chen, Xin-Long;Chang, Ben-Kang
To obtain the peak response at 532 nm, narrow-band response GaAlAs photocathodes with two GaAlAs active layers of different aluminum compositions are designed in consideration of the maximum absorptivity and quantum efficiency. The transmission-mode and the corresponding reflective-mode photocathodes are grown by metalorganic chemical vapor deposition. The results indicate that the peak response and the cut-off wavelength occur at 532 nm for the two kinds of photocathodes respectively. The response of the reflection-mode photocathode is an order of magnitude higher than that of the transmission-mode photocathode, whereas the better growth quality and the thicker second GaAlAs active layer can improve the transmission-mode response.
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DOI:
10.1117/12.218624
发表时间:
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期刊:
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影响因子:
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