中国科学院长春光学精密机械与物理研究所

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	Enhancement of near-infrared response of InGaAs photocathode through interaction of 1064 nm light with activated surface
	Z. Wang, Y. Zhang, S. Li, S. Tang, J. Zhang, Y. Qian, F. Shi, G. Jiao, H. Cheng and Y. Zeng
	2023
发表期刊	Applied Surface Science
ISSN	01694332
卷号	619
摘要	To enhance the near-infrared response of InGaAs photocathodes, we proposed an improved activation recipe, including conventional Cs/O or Cs/NF3 activation with white light and a subsequent re-activation with 1064 nm light. In-situ activation, re-activation and characterization were performed to investigate the relationship between the spectral response and the emitting surface. Multiple activation experiments demonstrated that re-activation illuminated by the 1064 nm light after conventional Cs/O activation effectively enhanced the spectral response in the near-infrared range, e.g., by a factor of 2–6 at 1064 nm, and this recipe had no enhancement effect on the spectral response of the Cs/NF3 activated samples. After Cs/O activation, the surface barrier of the activation surface was further optimized through the interaction of the 1064 nm light with the activated surface during re-activation. The minor optimization of the surface barrier could significantly improve the tunneling probability of the electrons excited by the near-infrared light. Moreover, the 1064 nm near-infrared light in re-activation could not be replaced by ultraviolet-blue light, as the interaction of ultraviolet-blue light with the activated surface had minimal effect on the surface barrier. © 2023 Elsevier B.V.
DOI	10.1016/j.apsusc.2023.156760
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收录类别	sci ; ei
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/68006
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Z. Wang, Y. Zhang, S. Li, S. Tang, J. Zhang, Y. Qian, F. Shi, G. Jiao, H. Cheng and Y. Zeng. Enhancement of near-infrared response of InGaAs photocathode through interaction of 1064 nm light with activated surface[J]. Applied Surface Science,2023,619.
APA	Z. Wang, Y. Zhang, S. Li, S. Tang, J. Zhang, Y. Qian, F. Shi, G. Jiao, H. Cheng and Y. Zeng.(2023).Enhancement of near-infrared response of InGaAs photocathode through interaction of 1064 nm light with activated surface.Applied Surface Science,619.
MLA	Z. Wang, Y. Zhang, S. Li, S. Tang, J. Zhang, Y. Qian, F. Shi, G. Jiao, H. Cheng and Y. Zeng."Enhancement of near-infrared response of InGaAs photocathode through interaction of 1064 nm light with activated surface".Applied Surface Science 619(2023).

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