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2016
1 Citation (Scopus)

Evaluation of AlGaN/GaN high electron mobility transistors grown on ZrTi buffer layers with sapphire substrates

Ren, F., Pearton, S. J., Ahn, S., Lin, Y. H., Machuca, F., Weiss, R., Welsh, A., McCartney, M., Smith, D. & Kravchenko, I. I., Sep 1 2016, In : Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics. 34, 5, 051208.

Research output: Contribution to journalArticle

Aluminum Oxide
High electron mobility transistors
Buffer layers
high electron mobility transistors
Sapphire
24 Citations (Scopus)

Evaluation of antimony segregation in InAs/InAs1-xSbx type-II superlattices grown by molecular beam epitaxy

Lu, J., Luna, E., Aoki, T., Steenbergen, E. H., Zhang, Y-H. & Smith, D., Mar 7 2016, In : Journal of Applied Physics. 119, 9, 095702.

Research output: Contribution to journalArticle

antimony
superlattices
molecular beam epitaxy
evaluation
profiles
2 Citations (Scopus)

Impact of dynamical scattering on quantitative contrast for aberration-corrected transmission electron microscope images

Wen, C. & Smith, D., Oct 1 2016, In : Micron. 89, p. 77-86 10 p.

Research output: Contribution to journalArticle

Electrons
18 Citations (Scopus)

Impact of severe plastic deformation on microstructure and hydrogen storage of titanium-iron-manganese intermetallics

Edalati, K., Matsuo, M., Emami, H., Itano, S., Alhamidi, A., Staykov, A., Smith, D., Orimo, S. I., Akiba, E. & Horita, Z., Nov 1 2016, In : Scripta Materialia. 124, p. 108-111 4 p.

Research output: Contribution to journalArticle

Hydrogen storage
Manganese
Titanium
plastic deformation
Intermetallics
5 Citations (Scopus)
Molecular beam epitaxy
Nitrides
nitrides
Solar cells
solar cells
12 Citations (Scopus)

Monolithic integration of perovskites on Ge(001) by atomic layer deposition: A case study with SrHfxTi1-xO3

Hu, S., McDaniel, M. D., Posadas, A., Hu, C., Wu, H., Yu, E. T., Smith, D., Demkov, A. A. & Ekerdt, J. G., Sep 1 2016, In : MRS Communications. 6, 3, p. 125-132 8 p.

Research output: Contribution to journalArticle

Atomic layer deposition
Epitaxial layers
Amorphous films
Crystallization
Chemical analysis
2 Citations (Scopus)

Morphological and microstructural stability of N-polar InAlN thin films grown on free-standing GaN substrates by molecular beam epitaxy

Hardy, M. T., McConkie, T. O., Smith, D., Storm, D. F., Downey, B. P., Katzer, D. S., Meyer, D. J. & Nepal, N., Mar 1 2016, In : Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films. 34, 2, 021512.

Research output: Contribution to journalArticle

Molecular beam epitaxy
Surface morphology
molecular beam epitaxy
Plasmas
Thin films
2 Citations (Scopus)
Aberrations
aberration
Semiconductor materials
Transmission electron microscopy
Dislocations (crystals)
4 Citations (Scopus)

Recent studies of oxide-semiconductor heterostructures using aberration-corrected scanning transmission electron microscopy

Smith, D., Wu, H. W., Lu, S., Aoki, T., Ponath, P., Fredrickson, K., McDaniel, M. D., Lin, E., Posadas, A. B., Demkov, A. A., Ekerdt, J. & McCartney, M., Aug 1 2016, (Accepted/In press) In : Journal of Materials Research. p. 1-9 9 p.

Research output: Contribution to journalArticle

Aberrations
Oxides
Heterojunctions
aberration
Transmission electron microscopy

Recovery in dc performance of off-state step-stressed AlGaN/GaN high electron mobility transistor with thermal annealing

Kim, B. J., Ahn, S., Kang, T. S., Zhu, J., Ren, F., Pearton, S. J. & Smith, D., 2016, CS MANTECH 2016 - International Conference on Compound Semiconductor Manufacturing Technology. CS Mantech, p. 271-273 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

High electron mobility transistors
Drain current
Annealing
Recovery
Degradation
4 Citations (Scopus)

Spectral identification scheme for epitaxially grown single-phase niobium dioxide

Hadamek, T., Posadas, A. B., Dhamdhere, A., Smith, D. & Demkov, A. A., Mar 7 2016, In : Journal of Applied Physics. 119, 9, 095308.

Research output: Contribution to journalArticle

dioxides
niobium
niobium oxides
strontium
metals
5 Citations (Scopus)

Spectrum and phase mapping across the epitaxial γ-Al2O3/SrTiO3 interface

Lu, S., Kormondy, K. J., Ngo, T. Q., Aoki, T., Posadas, A., Ekerdt, J. G., Demkov, A. A., McCartney, M. & Smith, D., Feb 1 2016, In : Applied Physics Letters. 108, 5, 051606.

Research output: Contribution to journalArticle

atomic layer epitaxy
holography
oxidation
electron gas
aberration
1 Citation (Scopus)

Structural characterization of niobium oxide thin films grown on SrTiO3 (111) and (La,Sr)(Al,Ta)O3 (111) substrates

Dhamdhere, A. R., Hadamek, T., Posadas, A. B., Demkov, A. A. & Smith, D., Dec 28 2016, In : Journal of Applied Physics. 120, 24, 245302.

Research output: Contribution to journalArticle

niobium oxides
thin films
lattice parameters
high pressure oxygen
transmission electron microscopy
7 Citations (Scopus)

Towards defect-free epitaxial CdTe and MgCdTe layers grown on InSb (001) substrates

Lu, J., DiNezza, M. J., Zhao, X. H., Liu, S., Zhang, Y-H., Kovacs, A., Dunin-Borkowski, R. E. & Smith, D., Apr 1 2016, In : Journal of Crystal Growth. 439, p. 99-103 5 p.

Research output: Contribution to journalArticle

Defects
Electrons
defects
Epitaxial layers
Substrates
2015
2 Citations (Scopus)

An indirect method of studying band alignments in nBn photodetectors using off-axis electron holography

Shen, X. M., He, Z. Y., Liu, S., Lin, Z. Y., Zhang, Y-H., Smith, D. & McCartney, M., Sep 21 2015, In : Applied Physics Letters. 107, 12, 122109.

Research output: Contribution to journalArticle

barrier layers
planetary waves
holography
photometers
alignment

A novel backside gate structure to improve device performance

Hwang, Y. H., Zhu, W., Dong, C., Ahn, S., Ren, F., Kravchenko, I. I., Smith, D. & Pearton, S. J., 2015, ECS Transactions. 1 ed. Electrochemical Society Inc., Vol. 66. p. 185-190 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric breakdown
Leakage currents
37 Citations (Scopus)

Atomic layer deposition of crystalline SrHfO3 directly on Ge (001) for high-k dielectric applications

McDaniel, M. D., Hu, C., Lu, S., Ngo, T. Q., Posadas, A., Jiang, A., Smith, D., Yu, E. T., Demkov, A. A. & Ekerdt, J. G., Feb 7 2015, In : Journal of Applied Physics. 117, 5, 054101.

Research output: Contribution to journalArticle

atomic layer epitaxy
strontium oxides
annealing
vacuum deposition
oxides
46 Citations (Scopus)

Carrier density modulation in a germanium heterostructure by ferroelectric switching

Ponath, P., Fredrickson, K., Posadas, A. B., Ren, Y., Wu, X., Vasudevan, R. K., Baris Okatan, M., Jesse, S., Aoki, T., McCartney, M., Smith, D., Kalinin, S. V., Lai, K. & Demkov, A. A., 2015, In : Nature Communications. 6, 6067.

Research output: Contribution to journalArticle

Germanium
Semiconductors
Ferroelectric materials
Carrier concentration
Heterojunctions
5 Citations (Scopus)

CHAPTER 1: Characterization of nanomaterials using transmission electron microscopy

Smith, D., 2015, Hierarchical Nanostructures for Energy Devices. 37 ed. Royal Society of Chemistry, Vol. 2015-January. p. 1-29 29 p. (RSC Nanoscience and Nanotechnology; vol. 2015-January, no. 37).

Research output: Chapter in Book/Report/Conference proceedingChapter

Nanostructured materials
electron microscopy
electron microscopes
Transmission electron microscopy
Imaging techniques
7 Citations (Scopus)

Charge control in N-polar InAlN high-electron-mobility transistors grown by plasma-assisted molecular beam epitaxy

Hardy, M. T., Storm, D. F., Downey, B. P., Katzer, D. S., Meyer, D. J., McConkie, T. O. & Smith, D., Nov 1 2015, In : Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics. 33, 6, 061207.

Research output: Contribution to journalArticle

High electron mobility transistors
high electron mobility transistors
Molecular beam epitaxy
molecular beam epitaxy
Plasmas
4 Citations (Scopus)

Defect creation in InGaAs/GaAs multiple quantum wells-I. Structural properties

Karow, M. M., Faleev, N. N., Smith, D. & Honsberg, C., Jul 28 2015, In : Journal of Crystal Growth. 425, p. 43-48 6 p.

Research output: Contribution to journalArticle

Semiconductor quantum wells
Structural properties
quantum wells
Defects
defects
3 Citations (Scopus)
Electron holography
mean free path
holography
Phase measurement
Electron diffraction
4 Citations (Scopus)
Electron holography
Magnetic domains
Magnetic anisotropy
holography
Multilayers
10 Citations (Scopus)
Indium
ultraviolet lasers
indium
Heterojunctions
Lasers
11 Citations (Scopus)

Effect of interfacial oxygen on the microstructure of MBE-grown homoepitaxial N-polar GaN

Storm, D. F., McConkie, T., Katzer, D. S., Downey, B. P., Hardy, M. T., Meyer, D. J. & Smith, D., Jan 1 2015, In : Journal of Crystal Growth. 409, p. 14-17 4 p.

Research output: Contribution to journalArticle

Molecular beam epitaxy
Oxygen
Epitaxial layers
microstructure
Microstructure
7 Citations (Scopus)

Effect of proton irradiation energy on AlGaN/GaN metal-oxide semiconductor high electron mobility transistors

Ahn, S., Dong, C., Zhu, W., Kim, B. J., Hwang, Y. H., Ren, F., Pearton, S. J., Yang, G., Kim, J., Patrick, E., Tracy, B., Smith, D. & Kravchenko, I. I., Sep 1 2015, In : Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics. 33, 5, 4928730.

Research output: Contribution to journalArticle

Proton irradiation
proton irradiation
High electron mobility transistors
high electron mobility transistors
metal oxide semiconductors
7 Citations (Scopus)

Effect of spacer layer thickness on structural and optical properties of multi-stack InAs/GaAsSb quantum dots

Kim, Y., Ban, K. Y., Boley, A., Smith, D. & Honsberg, C., Oct 26 2015, In : Applied Physics Letters. 107, 17, 173109.

Research output: Contribution to journalArticle

spacers
quantum dots
optical properties
thermal stability
luminescence
4 Citations (Scopus)

Exchange bias mediated by interfacial nanoparticles (invited)

Berkowitz, A. E., Sinha, S. K., Fullerton, E. E. & Smith, D., May 7 2015, In : Journal of Applied Physics. 117, 17, 172607.

Research output: Contribution to journalArticle

Permalloys (trademark)
nanoparticles
magnetic properties
microstructure
coercivity
6 Citations (Scopus)

Fe-doped nanostructured titanates synthesized in a single step route

Costa, A. M. L. M., Marinkovic, B. A., Suguihiro, N. M., Smith, D., Da Costa, M. E. H. M. & Paciornik, S., 2015, In : Materials Characterization. 99, p. 150-159 10 p.

Research output: Contribution to journalArticle

titanates
Nanosheets
Nanoribbons
Carbon Nanotubes
routes
21 Citations (Scopus)

Formation of metastable phases in magnesium-titanium system by high-pressure torsion and their hydrogen storage performance

Edalati, K., Emami, H., Staykov, A., Smith, D., Akiba, E. & Horita, Z., Aug 13 2015, In : Acta Materialia. 99, p. 150-156 7 p.

Research output: Contribution to journalArticle

Metastable phases
Hydrogen storage
Titanium
Hydrides
Torsional stress

Interface engineered wetting-layer-free InAs quantum dots on GaAs(001)

Gunasekera, M. V., Tang, D., Rusakova, I., Smith, D. & Freundlich, A., Dec 14 2015, 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355924

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Semiconductor quantum dots
Wetting
Optical properties
Photoluminescence spectroscopy
Linewidth
14 Citations (Scopus)
Superlattices
Molecular beam epitaxy
superlattices
Transmission electron microscopy
transmission electron microscopy
4 Citations (Scopus)

Investigation of single-layer/multilayer self-assembled InAs quantum dots on GaAs<inf>1-x</inf>Sb<inf>x</inf>/GaAs composite substrates

Tang, D., Kim, Y., Faleev, N., Honsberg, C. & Smith, D., Aug 16 2015, In : Journal of Applied Physics. 118, 9, 094303.

Research output: Contribution to journalArticle

quantum dots
composite materials
carrier lifetime
electron microscopy
thermal stability
9 Citations (Scopus)

MBE growth of sharp interfaces in dilute-nitride quantum wells with improved nitrogen-plasma design

Vijaya, G. K., Freundlich, A., Tang, D. & Smith, D., May 1 2015, In : Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics. 33, 3, 031209.

Research output: Contribution to journalArticle

Nitrogen plasma
nitrogen plasma
Molecular beam epitaxy
Nitrides
Semiconductor quantum wells
2 Citations (Scopus)

Measurement of mean inner potential and inelastic mean free path of ZnO nanowires and nanosheet

Gan, Z., Ahn, S., Yu, H., Smith, D. & McCartney, M., Oct 1 2015, In : Materials Research Express. 2, 10, 105003.

Research output: Contribution to journalArticle

Electron holography
Nanosheets
Nanowires
Nanostructured materials
Chemical vapor deposition
5 Citations (Scopus)

Molecular beam epitaxy growth of antimony-based mid-infrared interband cascade photodetectors

Tian, Z. B., Schuler-Sandy, T., Krishna, S., Tang, D. & Smith, D., Jun 20 2015, In : Journal of Crystal Growth. 425, p. 364-368 5 p.

Research output: Contribution to journalArticle

Antimony
Photodetectors
antimony
Molecular beam epitaxy
photometers
11 Citations (Scopus)
Polysilicon
Phosphorus
Carrier concentration
phosphorus
Chemical vapor deposition
16 Citations (Scopus)

Non-radiative recombination in Ge<inf>1-</inf><inf>y</inf>Sn<inf>y</inf> light emitting diodes: The role of strain relaxation in tuned heterostructure designs

Gallagher, J. D., Senaratne, C. L., Xu, C., Sims, P., Aoki, T., Smith, D., Menendez, J. & Kouvetakis, J., Jun 28 2015, In : Journal of Applied Physics. 117, 24, 245704.

Research output: Contribution to journalArticle

light emitting diodes
diodes
analogs
fabrication
cryogenic temperature
33 Citations (Scopus)

Plastic deformation of BaTiO3 ceramics by high-pressure torsion and changes in phase transformations,optical and dielectric properties

Edalati, K., Arimura, M., Ikoma, Y., Daio, T., Miyata, M., Smith, D. & Horita, Z., Jul 24 2015, In : Materials Research Letters. 3, 4, p. 216-221 6 p.

Research output: Contribution to journalArticle

Barium titanate
Curie temperature
Torsional stress
Dielectric properties
Powders
26 Citations (Scopus)

Quasi-two-dimensional electron gas at the epitaxial alumina/SrTiO3 interface: Control of oxygen vacancies

Kormondy, K. J., Posadas, A. B., Ngo, T. Q., Lu, S., Goble, N., Jordan-Sweet, J., Gao, X. P. A., Smith, D., McCartney, M., Ekerdt, J. G. & Demkov, A. A., Mar 7 2015, In : Journal of Applied Physics. 117, 9, 095303.

Research output: Contribution to journalArticle

electron gas
aluminum oxides
oxygen
room temperature
high energy electrons
16 Citations (Scopus)

Quasi-two-dimensional electron gas at the interface of γ-Al<inf>2</inf>O<inf>3</inf>/SrTiO<inf>3</inf> heterostructures grown by atomic layer deposition

Ngo, T. Q., Goble, N. J., Posadas, A., Kormondy, K. J., Lu, S., McDaniel, M. D., Jordan-Sweet, J., Smith, D., Gao, X. P. A., Demkov, A. A. & Ekerdt, J. G., Sep 21 2015, In : Journal of Applied Physics. 118, 11, 115303.

Research output: Contribution to journalArticle

atomic layer epitaxy
electron gas
high energy electrons
x ray spectroscopy
crystallinity
5 Citations (Scopus)

Recovery in dc and rf performance of off-state step-stressed AlGaN/GaN high electron mobility transistors with thermal annealing

Kim, B. J., Hwang, Y. H., Ahn, S., Zhu, W., Dong, C., Lu, L., Ren, F., Holzworth, M. R., Jones, K. S., Pearton, S. J., Smith, D., Kim, J. & Zhang, M. L., Apr 13 2015, In : Applied Physics Letters. 106, 15, 153504.

Research output: Contribution to journalArticle

high electron mobility transistors
recovery
annealing
thresholds
leakage

Simultaneous Enhancement of Electrical Conductivity and Thermopower of Bi<inf>2</inf>Te<inf>3</inf> by Multifunctionality of Native Defects

Suh, J., Yu, K. M., Fu, D., Liu, X., Yang, F., Fan, J., Smith, D. J., Zhang, Y. H., Furdyna, J. K., Dames, C., Walukiewicz, W. & Wu, J., 2015, (Accepted/In press) In : Advanced Materials.

Research output: Contribution to journalArticle

46 Citations (Scopus)

Simultaneous Enhancement of Electrical Conductivity and Thermopower of Bi2Te3 by Multifunctionality of Native Defects

Suh, J., Yu, K. M., Fu, D., Liu, X., Yang, F., Fan, J., Smith, D., Zhang, Y-H., Furdyna, J. K., Dames, C., Walukiewicz, W. & Wu, J., Jun 1 2015, In : Advanced Materials. 27, 24, p. 3681-3686 6 p.

Research output: Contribution to journalArticle

Thermoelectric power
Defects
Electrons
Electric Conductivity
2014
37 Citations (Scopus)

A Chemical Route to Monolithic Integration of Crystalline Oxides on Semiconductors

McDaniel, M. D., Ngo, T. Q., Posadas, A., Hu, C., Lu, S., Smith, D., Yu, E. T., Demkov, A. A. & Ekerdt, J. G., Nov 1 2014, In : Advanced Materials Interfaces. 1, 8, 1400081.

Research output: Contribution to journalArticle

Semiconductor materials
Crystalline materials
Oxides
Atomic layer deposition
Thick films
67 Citations (Scopus)

Architecture and magnetism of alnico

Zhou, L., Miller, M. K., Lu, P., Ke, L., Skomski, R., Dillon, H., Xing, Q., Palasyuk, A., McCartney, M., Smith, D., Constantinides, S., McCallum, R. W., Anderson, I. E., Antropov, V. & Kramer, M. J., Aug 1 2014, In : Acta Materialia. 74, p. 224-233 10 p.

Research output: Contribution to journalArticle

Magnetism
Coercive force
Spinodal decomposition
Rare earth alloys
Alloying elements
24 Citations (Scopus)

Atomic and electronic structure of the ferroelectric BaTiO 3/Ge(001) interface

Fredrickson, K. D., Ponath, P., Posadas, A. B., McCartney, M., Aoki, T., Smith, D. & Demkov, A. A., Jun 16 2014, In : Applied Physics Letters. 104, 24, 4883883.

Research output: Contribution to journalArticle

atomic structure
electronic structure
aberration
electron microscopy
molecular beam epitaxy
40 Citations (Scopus)

Atomic-scale chemical imaging and quantification of metallic alloy structures by energy-dispersive x-ray spectroscopy

Lu, P., Zhou, L., Kramer, M. J. & Smith, D., Feb 4 2014, In : Scientific Reports. 4, 3945.

Research output: Contribution to journalArticle

x ray spectroscopy
intermetallics
energy
chemical composition
physical properties
5 Citations (Scopus)
Silicon
Valence bands
alignment
Ultraviolet photoelectron spectroscopy
silicon