Abstract

To research the photoemission performance of a transmission-mode Al1xGaxN photocathode, Al0.24Ga0.76N and GaN photocathodes with the same structure were activated, their spectral responses were measured using a multi-information measurement system at room temperature, and the photocathode parameters were obtained by fitting quantum efficiency curves. The results showed that both the reflective-mode and transmission-mode spectral responses of the AlGaN photocathode were lower than those of the GaN photocathode. Compared with the GaN photocathode, the short-wavelength spectral response of the Al0.24Ga0.76N photocathode was less seriously affected by lattice defects between the buffer and emission layers. The Al atom at the AlGaN photocathode surface could affect the optimal Cs adsorption position, which mainly affects the surface electron escape probability of the photocathode.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Photoemission performance of thin graded structure AlGaN photocathode

Guanghui Hao, Feng Shi, Hongchang Cheng, Bin Ren, and Benkang Chang
Appl. Opt. 54(10) 2572-2576 (2015)

Attenuation performance of reflection-mode AlGaN photocathode under different preparation methods

Guanghui Hao, Mingzhu Yang, Benkang Chang, Xinlong Chen, Junju Zhang, and Xiaoqian Fu
Appl. Opt. 52(23) 5671-5675 (2013)

Effect of Cs adsorption on the photoemission performance of GaAlAs photocathode

Xinlong Chen, Muchun Jin, Yugang Zeng, Guanghui Hao, Yijun Zhang, Benkang Chang, Feng Shi, and Hongchang Cheng
Appl. Opt. 53(32) 7709-7715 (2014)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription