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In this paper, thin films of ZnO were deposited on different bottom electrodes (BEs) by DC magnetron sputtering to fabricate resistive random access memory (ReRAM) with a W/ZnO/BEs structure. The effects of different BEs on the resistive switching characteristics of the fabricated device have been investigated. The results reveal that the devices fabricated on different BEs exhibit reversible and steady unipolar resistive switching behaviors. The conduction behavior in the low resistance state has an Ohmic behavior. However, the conduction mechanism in the high resistance state fits well with the classical space charge limited conduction. Schottky barrier heights between ZnO and different BEs have great effect on the operation voltages during the resistive switching processes. The resistances in low resistance state and the reset currents of the ZnO films fabricated on different BEs were discussed based on the filamentary model.
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Keywords:
- ZnO thin film /
- resistive switching /
- bottom electrode
[1] Do Y H, Kwak J S, Bae Y C, Lee J H, Kim Y, Im H, Hong J P 2010 Curr. Appl. Phys. 10 E71
[2] Waser R, Aono M 2007 Nat Mater 6 833
[3] Jo S H, Kim K H, Lu W 2009 Nano Lett. 9 870
[4] Ahn S E, Lee M J, Park Y, Kang B S, Lee C B, Kim KH, Seo S, Suh D S, Kim D C, Hur J, Stefanovich G, Yin H, Yoo I K, Lee J H, Park J B, Baek I G, Park B H 2008 Adv. Mater 20 924
[5] Shi W,Tai Q, Xia X H,Yi M D, Xie L H, Fan Q L, Wang L H, Wei Ang, Huang W 2012 Chin. Phys. Lett. 29 087201
[6] Gang J L, Li S L, Meng Y, Liao Z L, Liang X J, Chen D M 2009 Acta Phys. Sin. 58 5730 (in Chinese) [刚建雷, 黎松林, 孟 洋, 廖昭亮, 梁学锦, 陈东敏 2009 物理学报 58 5730]
[7] Xing Z W, Chen X, Wu N J, Ignatiev A 2011 Chin. Phys. B 20 097703
[8] Park J W, Jung K, Yang M K, Lee J K 2007 2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics Nara-City, Japan, May 27-31,2007,p46
[9] Chang W Y, Lai Y C, Wu T B, Wang S F, Chen F, Tsai M J 2008 Appl. Phys. Lett. 92 022110
[10] Jeong D S, Schroeder H, Waser R 2009 Phys. Rev. B 79 195317
[11] Dong R, Lee D S, Pyun M B, Hasan M, Choi H J, Jo M S, Seong D J, Chang M, Heo S H, Lee J M, Park H K, Hwang H 2008 Appl. Phys. A-Mater. 93 409
[12] Lee C B, Kang B S, Benayad A, Lee M J, Ahn S E, Kim K H, Stefanovich G., Park Y, Yoo I K 2008 Appl. Phys. Lett. 93 042115
[13] Liu K C, Tzeng W H, Chang K M, Chan Y C, Kuo C C, Cheng C W 2010 Microelectronics Reliability 50 670
[14] Xu N, Liu L F, Sun X, Chen C, Wang Y, Han D D, Liu X Y, Han R Q, Kang J F, Yu B 2008 Semicond Sci. Tech. 23 075019
[15] Oh S C, Jung H Y, Lee H 2011 J. Appl. Phys. 109 124511
[16] Kim W G, Rhee S W 2010 Microelectronic Engineering 87 98
[17] YangY C, Pan F, Liu Q ,Liu M, Zeng F 2009 Nano. Lett. 9 1636
[18] Chen G, Song C, Chen Ch, Gao Sh, Zeng F, Pan F 2012 Adv. Mater. 24 3515
[19] Chen X M, Wu G H, Bao D H 2008 Appl. Phys. Lett. 93 093501
[20] Pan F, Chen C, Wang Z S, Yang Y C, Yang J, Zeng F 2010 Progress in Natural Science: Materials International 20 01
[21] Sundaram K B, Khan A 1997 J. Vac. Sci. Technol. A 15 428
[22] Baldo M A, O'Brien D F, Thompson M E, Forrest S R 1999 Phys. Rev. B 60 14422
[23] Alshareef H N, Quevedo-Lopez M A, Majhi P 2011 MRS BULL 36 90
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[1] Do Y H, Kwak J S, Bae Y C, Lee J H, Kim Y, Im H, Hong J P 2010 Curr. Appl. Phys. 10 E71
[2] Waser R, Aono M 2007 Nat Mater 6 833
[3] Jo S H, Kim K H, Lu W 2009 Nano Lett. 9 870
[4] Ahn S E, Lee M J, Park Y, Kang B S, Lee C B, Kim KH, Seo S, Suh D S, Kim D C, Hur J, Stefanovich G, Yin H, Yoo I K, Lee J H, Park J B, Baek I G, Park B H 2008 Adv. Mater 20 924
[5] Shi W,Tai Q, Xia X H,Yi M D, Xie L H, Fan Q L, Wang L H, Wei Ang, Huang W 2012 Chin. Phys. Lett. 29 087201
[6] Gang J L, Li S L, Meng Y, Liao Z L, Liang X J, Chen D M 2009 Acta Phys. Sin. 58 5730 (in Chinese) [刚建雷, 黎松林, 孟 洋, 廖昭亮, 梁学锦, 陈东敏 2009 物理学报 58 5730]
[7] Xing Z W, Chen X, Wu N J, Ignatiev A 2011 Chin. Phys. B 20 097703
[8] Park J W, Jung K, Yang M K, Lee J K 2007 2007 Sixteenth IEEE International Symposium on the Applications of Ferroelectrics Nara-City, Japan, May 27-31,2007,p46
[9] Chang W Y, Lai Y C, Wu T B, Wang S F, Chen F, Tsai M J 2008 Appl. Phys. Lett. 92 022110
[10] Jeong D S, Schroeder H, Waser R 2009 Phys. Rev. B 79 195317
[11] Dong R, Lee D S, Pyun M B, Hasan M, Choi H J, Jo M S, Seong D J, Chang M, Heo S H, Lee J M, Park H K, Hwang H 2008 Appl. Phys. A-Mater. 93 409
[12] Lee C B, Kang B S, Benayad A, Lee M J, Ahn S E, Kim K H, Stefanovich G., Park Y, Yoo I K 2008 Appl. Phys. Lett. 93 042115
[13] Liu K C, Tzeng W H, Chang K M, Chan Y C, Kuo C C, Cheng C W 2010 Microelectronics Reliability 50 670
[14] Xu N, Liu L F, Sun X, Chen C, Wang Y, Han D D, Liu X Y, Han R Q, Kang J F, Yu B 2008 Semicond Sci. Tech. 23 075019
[15] Oh S C, Jung H Y, Lee H 2011 J. Appl. Phys. 109 124511
[16] Kim W G, Rhee S W 2010 Microelectronic Engineering 87 98
[17] YangY C, Pan F, Liu Q ,Liu M, Zeng F 2009 Nano. Lett. 9 1636
[18] Chen G, Song C, Chen Ch, Gao Sh, Zeng F, Pan F 2012 Adv. Mater. 24 3515
[19] Chen X M, Wu G H, Bao D H 2008 Appl. Phys. Lett. 93 093501
[20] Pan F, Chen C, Wang Z S, Yang Y C, Yang J, Zeng F 2010 Progress in Natural Science: Materials International 20 01
[21] Sundaram K B, Khan A 1997 J. Vac. Sci. Technol. A 15 428
[22] Baldo M A, O'Brien D F, Thompson M E, Forrest S R 1999 Phys. Rev. B 60 14422
[23] Alshareef H N, Quevedo-Lopez M A, Majhi P 2011 MRS BULL 36 90
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