Skip to main content Accessibility help
×
Home

MBE-grown NiyMg1-yO and ZnxMg1-xO Thin Films for Deep Ultraviolet Optoelectronic Applications

  • Jeremy West Mares (a1), Ryan Casey Boutwell (a2), Matthew Thomas Falanga (a3), Amber Scheurer (a4) and Winston Vaughan Schoenfeld (a5)...

Abstract

We report on the heteroepitaxial growth of high-quality single crystal cubic ZnxMg1-xO and NiyMg1-yO thin films by radio frequency oxygen plasma-assisted molecular beam epitaxy (RF-MBE). Film compositions over the ranges x = 0 to x = 0.65 and y = 0 to y = 1 have been grown on lattice-matched MgO (100) and characterized optically, morphologically, compositionally, and electrically. Both of these ternary materials are shown to have bandgaps which vary directly as a function of transition metal (Ni or Zn) concentration. Optical transmission measurements of NiyMg1-yO show the bandgap to shift continuously over the approximate range 3.5 eV (for NiO) to 4.81 eV (for y=0.075). Similarly, the bandgap of cubic ZnxMg1-xO is shifted from about 4.9 eV (for x = 0.65) to 6.25 eV (for x=0.12). Films exhibit good morphological quality and typical roughness of NiyMg1-yO films is 5 Å while that of ZnxMg1-xO is less than 15 Å, as measured by atomic force microscopy (AFM). X-ray diffraction (XRD) is employed to confirm crystal orientation and to determine the films' lattice constants. Film compositions are interrogated by Rutherford Backscattering (RBS) and electrical characterization is made by room-temperature Hall measurements.

Copyright

References

Hide All
1 Chen, N. B. and Sui, C. H., Mater. Sci. Eng., B, 126, 16 (2006).10.1016/j.mseb.2005.08.112
2 Kim, J. W., Kang, H. S., Kim, J. H., et al., J. Appl. Phys., 100, 5 (2006).
3 Kuzmin, A. and Mironova, N., J. Phys. Condens. Matter, 10, 7937 (1998).10.1088/0953-8984/10/36/004
4 Bundesmann, C., Rahm, A., Lorenz, M., et al., J. Appl. Phys., 99, 113504 (2006).10.1063/1.2200447
5 Choopun, S., Vispute, R. D., Yang, W., et al., Appl. Phys. Lett., 80, 1529 (2002).10.1063/1.1456266
6 Hullavarad, S. S., Hullavarad, N. V., Pugel, D. E., et al., J. Phys. D: Appl. Phys., 40, 4887 (2007).10.1088/0022-3727/40/16/020
7 Schmidt, R., Rheinlander, B., Schubert, M., et al., Appl. Phys. Lett., 82, 2260 (2003).10.1063/1.1565185
8 Schmidt-Grund, R., Schubert, M., Rheinländer, B., et al., Thin Solid Films, 455-456, 500 (2004).10.1016/j.tsf.2003.11.249
9 Look, D. C., Mater. Sci. Eng., B, 80, 383 (2001).10.1016/S0921-5107(00)00604-8
10 Look, D. C., Reynolds, D. C., Sizelove, J. R., et al., Solid State Commun., 105, 399 (1998).10.1016/S0038-1098(97)10145-4
11 Ozgur, U., Alivov, Y. I., Liu, C., et al., J. Appl. Phys., 98, 1 (2005).10.1063/1.1992666
12 Pearton, S., Norton, D., Ip, K., et al., J. Vac. Sci. Technol., B, 22, 932 (2004).10.1116/1.1714985
13 Chen, X., Ruan, K., Wu, G., et al., Appl. Phys. Lett., 93, 112112 (2008).10.1063/1.2987514
14 Choi, J.-M. and Im, S., Appl. Surf. Sci., 244, 435 (2005).10.1016/j.apsusc.2004.09.152
15 Joshi, U. S., Matsumoto, Y., Itaka, K., et al., Appl. Surf. Sci., 252, 2524 (2006).10.1016/j.apsusc.2005.03.239
16 Lalevic, B., Leung, B., and N, Fuschill., Bulletin of the American Physical Society, 17, 246 (1972).
17 Lany, S., Osorio-Guillen, J., and Zunger, A., Phys. Rev. B: Condens. Matter, 75, 241203 (2007).10.1103/PhysRevB.75.241203
18 Salem, A. M., Mokhtar, M., and El-Shobaky, G. A., Solid State Ionics, 170, 33 (2004).10.1016/j.ssi.2004.01.034
19 Vygranenko, Y., Wang, K., and Nathan, A., Appl. Phys. Lett., 89, 172105 (2006).10.1063/1.2364269
20 Oka, K., Yanagida, T., Nagashima, K., et al., J. Appl. Phys., 104, 013711 (2008).10.1063/1.2952012
21 Chen, Y., Kolopus, J. L., and Sibley, W. A., Physical Review, 186, 865 (1969).10.1103/PhysRev.186.865
22 Summers, G. P., Wilson, T. M., Jeffries, B. T., et al., Phys. Rev. B: Condens. Matter, 27, 1283 (1983).10.1103/PhysRevB.27.1283

Keywords

MBE-grown NiyMg1-yO and ZnxMg1-xO Thin Films for Deep Ultraviolet Optoelectronic Applications

  • Jeremy West Mares (a1), Ryan Casey Boutwell (a2), Matthew Thomas Falanga (a3), Amber Scheurer (a4) and Winston Vaughan Schoenfeld (a5)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed