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Gold spherical shell photocathode was prepared by seed-mediated growth on polystyrefle template and dispersed on the aluminum substrates by spin-coating procedure. Polystyrefle template was then removed by heat treatment. SEM surface morphology shows that Au spherical shell of ～10 μm in diameter can be self-supported after polystyrefle substrate is removed. The thickness of Au shell is about 70-90 nm and the grain size on the surface is about 30-60 nm. X-ray photoemission characteristics of Au reflection photocathodes in the 400-1400 eV photon energy region are obtained, indicating that the Au shell photocathodes can emit 3 times more photoelectrons than the plane Au photocathode; this results from the special surface morphology of Au spherical shell and the reduction of surface potential.
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Keywords:
- X-ray photocathodes /
- Au spherical shell /
- X-ray photoemission characteristics /
- surface morphology
[1] Shang W L, Yang J M, Dong Y S 2013 Appl. Phys. Lett. 102 094105
[2] Zhang Q F, Large N, Nordlander P, Wang H 2014 J. Phys. Chem. Lett. 5 370
[3] Zeng P, Yuan Z, Deng B, Yuan Y T, Li Z C, Liu S Y, Zhao Y D, Hong C H, Zheng L, Cui M Q 2012 Acta Phys. Sin. 61 155209 (in Chinese) [曾鹏, 袁铮, 邓博, 袁永腾, 李志超, 刘慎业, 赵屹东, 洪才浩, 郑雷, 崔明启 2012 61 155209]
[4] Yuan Z, Liu S Y, Cao Z R, Li Y F, Chen T, Li H, Zhang H Y, Chen M 2010 Acta Phys. Sin. 59 4967 (in Chinese) [袁铮, 刘慎业, 曹柱荣, 李云峰, 陈韬, 黎航, 张海鹰, 陈铭 2010 59 4967]
[5] Wang Y Y, Gao Y, Wang X M, Cao Z R, Yi Z, Xu X B, Yi Y G, Wu W D 2013 High Power Laser and Particle Beams 25 2627 (in Chinese) [王瑜英, 高扬, 王雪敏, 曹柱荣, 易早, 徐习斌, 易有根, 吴卫东 2013 强激光与粒子束 25 2627]
[6] Cao Z R, Dong J J, Yang Z H, Zhan X Y, Yuan Z, Zhang H Y, Jiang S E, Ding Y K 2013 Acta Phys. Sin. 62 045205 (in Chinese) [曹柱荣, 董建军, 杨正华, 詹夏宇, 袁铮, 张海鹰, 江少恩, 丁永坤 2013 62 045205]
[7] Feng J, Engelhorn K, Cho B I, Lee H J, Greaves M, Weker C P, Falcone R W, Padmore H A, Heimann P A 2010 Appl. Phys. Lett. 96 134102
[8] Tan X L, Niu G, Li K, Luo J S, Wu W D, Tang Y J 2012 Rare Metal Materials and Engineering 41 169 (in Chinese) [谭秀兰, 牛高, 李恺, 罗江山, 吴卫东, 唐永建 2012 稀有金属材料与工程 41 169]
[9] Tan X L, Niu G, Li K, Luo J S, Wu W D, Tang Y J 2013 Rare Metal Materials and Engineering 42 162 (in Chinese) [谭秀兰, 牛高, 李恺, 罗江山, 吴卫东, 唐永建 2013 稀有金属材料与工程 42 162]
[10] Kane E O 1966 Phys. Rev. 147 335
[11] Henke B L, Knauer J P, Premaratne K 1981 J. Appl. Phys. 52 1509
[12] Dowell D, Schmerge J 2009 Phys. Rev. ST-Accel. Beams 12 074201
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[1] Shang W L, Yang J M, Dong Y S 2013 Appl. Phys. Lett. 102 094105
[2] Zhang Q F, Large N, Nordlander P, Wang H 2014 J. Phys. Chem. Lett. 5 370
[3] Zeng P, Yuan Z, Deng B, Yuan Y T, Li Z C, Liu S Y, Zhao Y D, Hong C H, Zheng L, Cui M Q 2012 Acta Phys. Sin. 61 155209 (in Chinese) [曾鹏, 袁铮, 邓博, 袁永腾, 李志超, 刘慎业, 赵屹东, 洪才浩, 郑雷, 崔明启 2012 61 155209]
[4] Yuan Z, Liu S Y, Cao Z R, Li Y F, Chen T, Li H, Zhang H Y, Chen M 2010 Acta Phys. Sin. 59 4967 (in Chinese) [袁铮, 刘慎业, 曹柱荣, 李云峰, 陈韬, 黎航, 张海鹰, 陈铭 2010 59 4967]
[5] Wang Y Y, Gao Y, Wang X M, Cao Z R, Yi Z, Xu X B, Yi Y G, Wu W D 2013 High Power Laser and Particle Beams 25 2627 (in Chinese) [王瑜英, 高扬, 王雪敏, 曹柱荣, 易早, 徐习斌, 易有根, 吴卫东 2013 强激光与粒子束 25 2627]
[6] Cao Z R, Dong J J, Yang Z H, Zhan X Y, Yuan Z, Zhang H Y, Jiang S E, Ding Y K 2013 Acta Phys. Sin. 62 045205 (in Chinese) [曹柱荣, 董建军, 杨正华, 詹夏宇, 袁铮, 张海鹰, 江少恩, 丁永坤 2013 62 045205]
[7] Feng J, Engelhorn K, Cho B I, Lee H J, Greaves M, Weker C P, Falcone R W, Padmore H A, Heimann P A 2010 Appl. Phys. Lett. 96 134102
[8] Tan X L, Niu G, Li K, Luo J S, Wu W D, Tang Y J 2012 Rare Metal Materials and Engineering 41 169 (in Chinese) [谭秀兰, 牛高, 李恺, 罗江山, 吴卫东, 唐永建 2012 稀有金属材料与工程 41 169]
[9] Tan X L, Niu G, Li K, Luo J S, Wu W D, Tang Y J 2013 Rare Metal Materials and Engineering 42 162 (in Chinese) [谭秀兰, 牛高, 李恺, 罗江山, 吴卫东, 唐永建 2013 稀有金属材料与工程 42 162]
[10] Kane E O 1966 Phys. Rev. 147 335
[11] Henke B L, Knauer J P, Premaratne K 1981 J. Appl. Phys. 52 1509
[12] Dowell D, Schmerge J 2009 Phys. Rev. ST-Accel. Beams 12 074201
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