Effect of Cu doping on the secondary electron yield of carbon films on Ag-plated aluminum alloy
Tiancun Hu(胡天存)1,2, Shukai Zhu(朱淑凯)3, Yanan Zhao(赵亚楠)3,†, Xuan Sun(孙璇)3, Jing Yang(杨晶)2, Yun He(何鋆)2, Xinbo Wang(王新波)2, Chunjiang Bai(白春江)2, He Bai(白鹤)2, Huan Wei(魏焕)2, Meng Cao(曹猛)1, Zhongqiang Hu(胡忠强)3, Ming Liu(刘明)3, and Wanzhao Cui(崔万照)2,‡
1 Key Laboratory for Physical Electronics and Devices of the Ministry of Education, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 2 National Key laboratory of Science and Technology on Space Microwave, China Academy of Space Technology(Xi'an), Xi'an 710100, China; 3 Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education&International Center for Dielectric Research, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Abstract Reducing the secondary electron yield (SEY) of Ag-plated aluminum alloy is important for high-power microwave components. In this work, Cu doped carbon films are prepared and the secondary electron emission characteristics are studied systematically. The secondary electron coefficient δmax of carbon films increases with the Cu contents increasing at first, and then decreases to 1.53 at a high doping ratio of 0.645. From the viewpoint of surface structure, the higher the content of Cu is, the rougher the surface is, since more cluster particles appear on the surface due to the small solid solubility of Cu in the amorphous carbon network. However, from viewpoint of the electronic structure, the reduction of the sp2 hybrid bonds will increase the SEY effect as the content of Cu increases, due to the decreasing probability of collision with free electrons. Thus, the two mechanisms would compete and coexist to affect the SEY characteristics in Cu doped carbon films.
Received: 08 September 2021
Revised: 12 October 2021
Accepted manuscript online: 22 October 2021
PACS:
79.20.Hx
(Electron impact: secondary emission)
Fund: This work was supported by the National Key Laboratory Foundation (Grant Nos. 2018SSFNKLSMT-04,614241101010117 and 6142411191110) and the National 111 Project of China (Grant No. B14040).
Corresponding Authors:
Yanan Zhao, Wanzhao Cui
E-mail: zhaoyanan1984@xjtu.edu.cn;cuiwanzhao@126.com
Cite this article:
Tiancun Hu(胡天存), Shukai Zhu(朱淑凯), Yanan Zhao(赵亚楠), Xuan Sun(孙璇), Jing Yang(杨晶), Yun He(何鋆), Xinbo Wang(王新波), Chunjiang Bai(白春江), He Bai(白鹤), Huan Wei(魏焕), Meng Cao(曹猛), Zhongqiang Hu(胡忠强), Ming Liu(刘明), and Wanzhao Cui(崔万照) Effect of Cu doping on the secondary electron yield of carbon films on Ag-plated aluminum alloy 2022 Chin. Phys. B 31 047901
[1] Xie A G, Xiao S R, Zhan Y and Zhao H F 2012 Chin. Phys. Lett. 29 117901 [2] Xie A G, Zhang J and Wang T B 2011 Chin. Phys. Lett. 28 097901 [3] Feng G B, Cui W Z, Zhang N, Cao M and Liu C L 2017 Chin. Phys. B26 097901 [4] Wang H, Cao L H, Zhao Z Q, Yu M Y, Gu Y Q and He X T 2014 Chin. Phys. B23 055202 [5] Montero I, Mohamed S H, Garcia M, Galan L and Raboso D 2007 J. Appl. Phys. 101 113306 [6] Miao G, Cui W, Zhang N, Yang J and Zhang H 2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE) [7] Lu Q, Yu B, Hu Z, He Y, Hu T, Zhao Y, Wang Z, Zhou Z, Cui W and Liu M 2020 Appl. Surf. Sci. 501 144236 [8] Ye M, Feng P, Wang D, Song B P, He Y N and Cui W Z 2019 Chin. Phys. B28 077901 [9] Yun L, Wanzhao C, Zhang H T, Yin X S, Wang H G, Jianfeng Z and He Y N 2017 Chin. Space Sci. Technol. 37 73 [10] Dionne and Gerald F 1973 J. Appl. Phys. 44 5361 [11] Dionne G F 1975 J. Appl. Phys. 46 3347 [12] Wang X 2018 J. Mech. Engin. 54 115 [13] Zhang W, Zhang X, Fang F and Jiang J 2009 Chin. J. Vacuum Sci. Technol. 29 282 [14] Cui W Z, Li Y, Yang J, Hu T C, Wang X B, Wang R, Zhang N, Zhang H T and He Y N 2016 Chin. Phys. B25 068401 [15] Ye M, He Y N, Hu S G, Wang R, Hu T C, Yang J and Cui W Z 2013 J. Appl. Phys. 113 124404 [16] Wang D, He Y and Cui W 2018 Surf. Technol. 47 9 [17] Ma J, Wei L, Bai Y, Bao Y, Kang Q, Zhang W, Cui W, Hu T and Wu D 2021 Thin Solid Films725 138633 [18] Ye M, Ye Y, Wang R, Hu T, Zhang N, Yang J, Cui W and Zhang Z 2014 Acta Phys. Sin. 63 147901 (in Chinese) [19] Bai C J, Feng G B, Cui W Z, He Y N, Zhang W, Hu S G, Ye M, Hu T C, Huang G S and Wang Q 2018 Acta Phys. Sin. 67 037902 (in Chinese) [20] He Y, Yu B, Wang Q, Bai C, Yang J, Hu T, Xie B and Cui W 2018 Acta Phys. Sin. 67 087901 (in Chinese) [21] Robertson J F R 2002 Mater. Sci. Engin. R37 129 [22] Zhang Y X, Wang Y G, Wang S H, Wei W, Ge X Q, Zhu B L, Shao J Q and Wang Y 2020 Coatings10 884 [23] Aijaz A, Sarakinos K, Lundin D, Brenning N and Helmersson U 2012 Diam. Relat. Mater. 23 1 [24] Ferrari A C and Robertson J 2004 Philos. Trans. A Math. Phys. Eng. 362 2477 [25] Toh C T, Zhang H, Lin J, Mayorov A S, Wang Y P, Orofeo C M, Ferry D B, Andersen H, Kakenov N, Guo Z, Abidi I H, Sims H, Suenaga K, Pantelides S T and Ozyilmaz B 2020 Nature577 199 [26] Nguyen H K A, Mankowski J, Dickens J C, Neuber A A and Joshi R P 2018 AIP Adv. 8 015325 [27] Guo Q and Zhang J 2013 Guti Dianzixue Yanjiu Yu JinzhanResearch and Progress of Solid State Electronics33 420 (in Chinese) [28] Casiraghi C, Ferrari A C and Robertson J 2005 Phys. Rev. B72 085401 [29] Ferrari A and Robertson J 2000 Phys. Rev. B61 14095 [30] Caro M A, Deringer V L, Koskinen J, Laurila T and Csanyi G 2018 Phys. Rev. Lett. 120 166101
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