研究生: |
黃柏彰 Huang, Bo-Jhung |
---|---|
論文名稱: |
藍寶石基板氮化鎵之準垂直型蕭基以及接面位障蕭基二極體製作 The Fabrication of Quasi Vertical Schottky Diode and Junction Barrier Schottky Diode GaN on Sapphire |
指導教授: | 黃智方 |
口試委員: |
龔正
李坤彥 |
學位類別: |
碩士 Master |
系所名稱: |
電機資訊學院 - 電子工程研究所 Institute of Electronics Engineering |
論文出版年: | 2014 |
畢業學年度: | 103 |
語文別: | 中文 |
論文頁數: | 61 |
中文關鍵詞: | 氮化鎵 、功率元件 、蕭基二極體 |
相關次數: | 點閱:4 下載:0 |
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篇論文中,我們使用兩種不同的磊晶結構的氮化鎵試片製作了準垂直型 SBD、JBS和PiN二極體。傳統的SBD二極體元件操作在反向偏壓時,存在漏電流過大而導致元件提早崩潰的問題,所以我們設計製作了不同寬度的JBS元件,嘗試降低元件操作在逆偏時所產生的漏電流。且我們在兩種不同磊晶結構的氮化鎵試片上,用了不同的製程去製作SBD元件,比較兩種製程的電性差異。
從I-V量測結果來看,JBS元件確實可以稍微降低元件的反向漏電流,而蕭基接面在製程上有經過電漿的轟擊,其漏電流明顯地上升。然而蕭基接面沒經過任何損傷破壞的SBD和PiN元件有比較好的電性表現,其崩潰電壓分別為590V和380V,而以PiN元件有較高的current on/off ratios。
從C-V量測結果來看,試片的N-層濃度不如預期的高,可能與N-層中的缺陷密度有相當大的關係,以至於我們的SBD特徵導通電阻偏大,順向導通特性不如預期。
[1] B. J. Baliga, “Power semiconductor device figure of merit for high-frequency applications, ”IEEE Electron Device Lett, vol. 10,
no.10 , pp. 455-457, 1989.
[2] M. N. Yoder, “Wide bandgap semiconductor materials and devices, ”IEEE Trans. Electron Devices, vol. 43, no. 10, pp. 1633–1636,Oct. 1996.
[3] T. G. Zhu, D. J. H. Lambert, B. S. Shelton, M.M. Wong, U. Chowdhury, H. K. Kwon, R.D. Dupuis, “High-voltage mesa-structure GaN Schottky rectifiers processed by dry and wet etching, ” Appl Phys Lett., vol. 77, no. 18, pp.2918,2000.
[4] J. W. Johnson, J. R. LaRoch, F. Ren, B. P. Gila, M. E. Overberg, C. R. Abernathy, J. -I. Chyi, C. C. Chuo, T. E. Nee, C. M. Lee, K. P. Lee, S. S. Park, Y.J. Park and S. J. Pearton, “Schottky rectifiers fabricated on free-standing GaN substrates”, Solid-State Electronics, vol. 45,pp. 405-410, 2001.
[5] J. W. Johnson, A. P. Zhang, W.-B. Luo, F. Ren, S. J. Pearton, S. S. Park, Y. J. Park, “Breakdown voltage and reverse recovery characteristics of free-standing GaN Schottky rectifiers, ” IEEE Trans. Electron Devices, vol. 49, no. 1, pp. 32-36, Jan 2002.
[6] J. B. Limb, D. Yoo, J.-H. Ryou, W. Lee, S.-C. Shen, and R. D. Dupuis, "High performance GaN pin rectifiers grown on free-standing GaN substrates," Electronic Lett., vol. 42, no. 22, Oct. 2006.
[7] Y. Yoshizumi, S. Hashimoto, T. Tanabe, and M. Kiyama, “High-breakdown-voltage pn-junction diodes on GaN substrates, ” Journal of Crystal Growth, vol. 298, pp. 875-878, Jan. 2007.
[8] Y. Saitoh, K. Sumiyoshi, M. Okad, T. Horii, T. Miyazaki, H. Shiomi,.M. Ueno, K. Katayama, M. Kiyama, T. Nakamura, “Extremely low on-resistance and high breakdown voltage observed in vertical GaN Schottky barrier diodes with high-mobility drift layers on low-dislocation-density GaN substrates, ” Applied Physics Express vol. 3, pp. 081001 1-3, Jul. 2010.
[9] B.J. Baliga, “The pinch rectifier: A low-forward-drop high speed power diode, ” IEEE Electron Device Lett., vol. EDL-5, no. 6, pp.194-196, 1984.
[10] C.M. Zetterling, F. Dahlquist, N.Lundberg, M.Ostling, K. Rottner, and L.Ramberg, “Junction barrier Schottky diodes in 6H-SiC, ” Solid State Electron., vol. 42, no. 9, pp. 1757-1759, 1998.
[11] W. Utsumi, H. Saitoh, H. Kaneko, T. Watanuki, K. Aoki, O. Shimomura, “Congruent melting of gallium nitride at 6 GPa an its application to single crystal growth, ” Nature Materials, vol. 2 ,pp. 735,2003.
[12] http://www.kymatech.com/.
[13] http://www.goldeneyeled.com/index.html.
[14] A.C. Schmitz, A.T. Ping, M.A. Khan, Q. Chen, J.W. Yang and I. Adesida, “Schottky barrier properties of various metals on n-type GaN, ” Semicond. Sci. Technol.vol. 11,, pp.1464-1467,1996.
[15] K. Tadatomo, H. Okagawa, Y. Ohuchi, T. Tsunekawa, Y. Imada, M. Kato, and T. Taguchi, “High Output Power InGaN Ultraviolet Light-Emitting Diodes Fabricated on Patterned Substrates Using Metalorganic Vapor Phase Epitaxy, ” Jpn. J. Appl. Phys., Part 2 vol. 40, pp. L583-L585, 2001.
[16] W. Götz, N. M. Johnson, J. Walker, D. P. Bour, and R. A. Street, “Activation of acceptors in Mgdoped GaN grown by metalorganic chemical vapor deposition, ” Appl. Phys. Lett., vol. 68, no. 5, pp. 667-669, Jan. 1996.
[17] J.-M. Lee, K.-M. Chang, I.-H. Lee, and S.-J. Parkz, “Cl2-based dry etching of GaN and InGaN using inductively coupled plasma, ” J. Electrochemical Society, vol. 147, no. 5, pp. 1859-1863, 2000.
[18] J. Ladroue, A. Meritan, M. Boufnichel, P. Lefaucheux, and P. Ranson, “Deep GaN etching by inductively coupled plasma and induced surface defects, ”J. Vac. Sci. Technol. A vol. 18, pp. 1226-1232, Oct. 2010.
[19] B. J. Zhang, J. K. Sheu, S. W. Lin, “Schottky barrier heights of metal contacts to n-type gallium nitride with low-temperature-grown cap layer, ” Appl. Phys. Lett.vol. 88, 032103,2006.
[20] B. J. Zhang, T. Egawa, G. Y. Zhao, H. Ishikawa, and M. Umeno, “Schottky diodes of Ni/Au on n-GaN grown on sapphire and SiC substrates, ”Appl. Phys. Lett. vol. 79, no. 16, pp. 2567-2569,2001.
[21] Susumu Oyama, Tamotsu Hashizume and Hideki Hasegawa , “Mechanism of Current Leakage through Metal/n-GaN Interfaces, ”Applied Surface Science.vol. 190, pp.322-325,2002.
[22] L. S. Yu, Q. Z. Liu, Q. J. Xing, D. J. Qiao, S. S. Lau, and J. Redwing, “The roleof the tunneling component in the current–voltage characteristics of metal-GaNSchottky diodes”, J. Appl. Phys. vol.84,no. 4, 2099, 1998.
[23] M. Zerbst, “Relaxation Effects at Semiconductor-Insulator Interfaces, ” Z. Angew . Phys. vol. 22, pp. 30–33, May 1966.
[24] D.K. Schroder, “Semiconductor Material and Device
Characterization, ” John Wiley & Sons Inc, 2006.