This paper reports the molecular beam epitaxial growth and characterization of high-reflectivity and broad-bandwidth distributed Bragg reflectors (DBRs) made of ZnTe/GaSb quarter-wavelength (lambda/4) layers for optoelectronic applications in the midwave infrared spectral range (2-5 mu m). A series of ZnTe/GaSb DBRs has been successfully grown on GaSb (001) substrates using molecular beam epitaxy (MBE). During the MBE growth, a temperature ramp was applied to the initial growth of GaSb layers on ZnTe to protect the ZnTe underneath from damage due to thermal evaporation. Post-growth characterization using high-resolution x-ray diffraction, atomic force microscopy, and transmission electron microscopy reveals smooth surface morphology, low defect density, and coherent interfaces. Reflectance spectroscopy results show that a DBR sample of seven lambda/4 pairs has a peak reflectance as high as 99.0% centered at 2.56 mu m with a bandwidth of 517 nm.
Details
- Molecular Beam Epitaxial Growth of High-Reflectivity and Broad-Bandwidth ZnTe/GaSb Distributed Bragg Reflectors
- Fan, Jin (Author)
- Liu, Xinyu (Author)
- Ouyang, Lu (Author)
- Pimpinella, Richard E. (Author)
- Dobrowolska, Margaret (Author)
- Furdyna, Jacek K. (Author)
- Smith, David (Author)
- Zhang, Yong-Hang (Author)
- Ira A. Fulton Schools of Engineering (Contributor)
-
Digital object identifier: 10.1116/1.4793475
-
Identifier TypeInternational standard serial numberIdentifier Value1365-2966
-
Identifier TypeInternational standard serial numberIdentifier Value0035-8711
-
© 2013 American Vacuum Society. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Vacuum Society. The following article appeared in Journal of Vacuum Science & Technology B, 31(3), 03C109. and may be found at http://scitation.aip.org/content/avs/journal/jvstb/31/3/10.1116/1.4793475
Citation and reuse
Cite this item
This is a suggested citation. Consult the appropriate style guide for specific citation guidelines.
Fan, J., Liu, X., Ouyang, L., Pimpinella, R. E., Dobrowolska, M., Furdyna, J. K., . . . Zhang, Y. (2013). Molecular beam epitaxial growth of high-reflectivity and broad-bandwidth ZnTe/GaSb distributed bragg reflectors. Journal of Vacuum Science & Technology B, 31(3), 03C109. doi:10.1116/1.4793475