Magnesium-doped zinc oxide structures and methods

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

Reexamination Certificate

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C257S200000, C257S201000, C257SE21170, C257SE21320, C257SE21267, C257SE21278, C257SE21317

Reexamination Certificate

active

08076727

ABSTRACT:
Methods of forming transparent conducting oxides and devices formed by these methods are shown. Monolayers that contain zinc and monolayers that contain magnesium are deposited onto a substrate and subsequently processed to form magnesium-doped zinc oxide. The resulting transparent conducing oxide includes properties such as an amorphous or nanocrystalline microstructure. Devices that include transparent conducing oxides formed with these methods have better step coverage over substrate topography and more robust film mechanical properties.

REFERENCES:
patent: 6767785 (2004-07-01), Rolfson et al.
patent: 6790791 (2004-09-01), Ahn et al.
patent: 6921702 (2005-07-01), Ahn et al.
patent: 7374964 (2008-05-01), Ahn et al.
patent: 7390756 (2008-06-01), Ahn et al.
patent: 7498230 (2009-03-01), Ahn et al.
patent: 2002/0111001 (2002-08-01), Ahn et al.
patent: 2005/0164521 (2005-07-01), Ahn et al.
patent: 2006/0024975 (2006-02-01), Ahn et al.
patent: 2008/0191350 (2008-08-01), Ahn et al.
Ahn, K Y, “Atomic Layer Deposited Titanium-Doped Indium Oxide Films”, U.S. Appl. No. 11/400,836, filed Apr. 7, 2006.
Bhattacharya, P, et al., “Fabrication of stable wide-band-gap ZnO/MgO multilayer thin films”,Applied Physics Letters, 83(10), (Sep. 8, 2003), 2010-2012.
Bundesmann, C, et al., “Raman scattering in ZnO thin films doped with Fe, Sb, Al, Ga, and Li”,Applied Physics Letters, 83(10), (Sep. 8, 2003), 1974-76.
Cheng, X M, et al., “Magnetic properties of expitaxial Mn-doped ZnO thin films”,Journal of Applied Physics, 93(10), (May 15, 2003), 7876-78.
Han, J, et al., “Varistor behaviour of Mn-doped ZnO ceramics”,Journal of the European Ceramic Society, 22, (2002), 1653-60.
Hatanpaa, Timo, et al., “Properties of [Mg2(thd)4] as a Precursor for Atomic Layer Deposition of MgO Thin Films and Crystal Structures of [Mg2(thd)4] and [Mg2(thd)2] (EtOH)2]”,Chem. Mater., 11(7), (Jun. 29, 1999), 1846-1852.
Huang, R, et al., “The surface morphology of atomic layer deposited magnesia”,J. Mater. Sci Lett., 12, (1993), 1444-6.
Jeong, Sang-Hun H, et al., “Photoluminescence dependence of ZnO films grown on Si(100) by radio frequency magnetron sputtering on the growth ambient”,Applied Physics Letters, 82(16), (Apr. 21, 2003), 2625-2627.
Kim, T S, et al., “Splitting of the valence band for polycrystalline ZnO”,Journal of the Korean Physical Society, 38(1), (2001), 42-6.
Ko, H J, et al., “Photoluminescence properties of ZnO epilayers grown on CaF2(111) by plasma assisted molecular beam epitaxy”,Applied Physics Letters, 76(14), (Apr. 3, 2000), 1905-7.
Liu, Z F, et al., “Epitaxial growth and properties of Ga-doped ZnO films grown by pulsed laser deposition”,Journal of Crystal Growth, vol. 259, No. 1, (2003), 130-136.
Look, D C, “Recent advances in ZnO materials and devices”,Materials Science and Engineering, B80, (2001), 383-87.
Lu, Y F, “The effects of thermal annealing on ZnO thin films grown by pulsed laser deposition”,Journal of Applied Physics, vol. 88, No. 1, (Jul. 1, 2000), 498-502.
Makino, T, et al., “Exciton spectra of ZnO epitaxial layers on lattice-matched substrates grown with laser-molecular-beam epitaxy”,Applied Physics Letters, 76(24), (Jun. 12, 2000), 3549-51.
Minemoto, Takashi, et al., “Preparation of Zn1-x MgxO films by radio frequency magnetron sputtering”,Thin Solid Films, 372, (2000), 173-6.
Ohtomo, A, et al., “MgxZn1-xO as a II-VI widegap semiconductor alloy”,Applied Physics Letters, 72(19), (May 11, 1998), 2466-2468.
Pearton, “Recent advances in processing of ZnO”,Journal of Vacuum Science&Technology B: Microelectronics and Nanometer Structures, vol. 22, Issue 3, (May 2004), 932-948.
Putkonen, Matti, et al., “Enhanced growth rate in atomic layer epitaxy deposition of magnesium oxide thin films”,J. Mater. Chem., 9, (2000), 1857-61.
Ryu, Y R, et al., “Optical and structural properties of ZnO films deposited on GaAs by pulsed laser deposition”,Journal of Applied Physics, 88(1), (2000), 201-.
Sang, Baosheng, et al., “Growth of transparent conductive oxide ZnO films by atomic layer deposition”,Japanese Journal of Applied Physics, 35, (1996), L602-605.
Sanon, G, et al., “Band gap narrowing and band structure in degenerate tin oxide (Sn02) films”,Physical Review B, 44(11), (1988), 5672-80.
Semilius, B E, et al., “Band-gap tailoring of ZnO by means of heavy Al doping”,Physical Review B, 37(7), (1988), 10244-48.
Shan, F K, “Band gap energy of pure and Al-doped ZnO thin films”,Journal of European Ceramic Society, 24, (2004), 1869-72.
Shan, F K, et al., “Blue shift of near band edge emission in Mg doped ZnO thin films and aging”,J. Appl. Phys., 95(9), (2004), 4772-76.
Shan, F K, et al., “Optical properties of pure and Al doped ZnO thin films fabricated with plasma produced by excimer laser”,Thin Solid Films, 435, (2003), 174-8.
Shan, F K, et al., “Substrate effects of ZnO thin films prepared by PLD technique”,Journal of the European Ceramic Society, 24, (2004), 1015-18.
Shen, F K, et al., “Structual properties of zinc oxide thin films by fabrication conditions in pulsed laser deposition”,J. Korean Phys. Soc. 42, (2003), S1157-60.
Sneh, Ofer, “Thin film atomic layer deposition equipment for semiconductor processing”,Thin Solid Films, 402, (2002), 248-261.
So, S, et al., “Improvement in the electrical stability of semiconducting ZnO ceramic varistors with SiO2additive”,J. Dorean Phys. Soc., 40, (2002), 925-9.
Srikant, V, “On the optical band gap of zinc oxide”,Journal of Applied Physics, 83(10), (May 15, 1998), 5447-5451.

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