Phil Ahrenkiel, PhD
Prior to joining SDSMT in 2006, Dr. Ahrenkiel was a researcher at National Renewable Energy Laboratory (NREL), beginning in 1991 as a graduate student, and later as Senior Scientist I. His work at NREL involved a range of photovoltaic materials, including compound semiconductor nanomaterials and epitaxial films, thin-film silicon and germanium, and various conducting oxides. Among the projects to which he contributed were alloy ordering and phase separation, crystallization kinetics of amorphous films, and microstructures of polyphase films. he received his BS in Engineering Physics from CU, Boulder, his MS in Physics from Colorado School of Mines, and his PhD in Physics from CU, Boulder. He currently manages the TEM facility at SDSMT, which is shared by a broad base of faculty, student, and industry clients.
Area of expertise:
Photovoltaics, electron microscopy
N. Zheng and S. P. Ahrenkiel, “Epitaxial nanowire formation in metamorphic GaAs / GaPAs short-period superlattices,” AIP Adv., 7, 75319 (2017).
P. Dutta, M. Rathi, N. Zheng, Y. Gao, Y. Yao, J. Martinez, P. Ahrenkiel, V. Selvamanickam, “High mobility single-crystalline-like GaAs thin films on inexpensive flexible metal substrates by metal-organic chemical vapor deposition,” App. Phys. Lett., 105, 092104 (2014).
M. Rathi, S. P. Ahrenkiel, J. J. Carapella, M. W. Wanlass, "A Standards-Based Method for Compositional Analysis by Energy Dispersive X-Ray Spectrometry using Multivariate Statistical Analysis: Application to Multicomponent Alloys", Microsc. Microanal. 19, 66 (2012).
S. Mishra, S. P. Ahrenkiel, “Synthesis and Characterization of Electrospun Nanocomposite TiO2 Nanofibers with Ag Nanoparticles for Photocatalysis Applications,” J. Nanomaterials, 2012, 902491, (2012).
S.P. Ahrenkiel, A. H. Mahan, D. S. Ginley, Y. Xu, "Solid-Phase Crystallization Kinetics and Grain Structure during Thermal Annealing of a-Si:H Grown by Chemical Vapor Deposition", Mater. Sci. Eng. B 176, 972-977 (2011).
S.P. Ahrenkiel, M.W. Wanlass, J.J. Carapella, R.K. Ahrenkiel, S.W. Johnston, and L.M. Gedvilas, “Optimization of buffer layers for lattice-mismatched epitaxy of GaxIn1-xAs / InAsyP1-y double-heterostructures on InP”, Sol. Energy Mat. & Solar Cells 91, 908-918 (2007).
S. P. Ahrenkiel, P. R. Yu, J. E. Murphy, J. M. Nedeljković, B. Donohoe, "Nanoparticle Shape and Configuration Analysis by Transmission Electron Tomography", J. Microscopy 230, 382 (2008).
J. M. Nedeljkovic, O. I. Micic, S. P. Ahrenkiel, and A. J. Nozik, "Synthesis and Characterization of III-V Rod Shape Semiconductor Nanocrystals", Materials Science Forum, 494, 121 (2005).
O. I. Micic, S. P. Ahrenkiel, and A. J. Nozik, "Electronic coupling in solid films of extremely small InP quantum dots", Abstracts of Papers of the American Chemical Society, 222, U218-U218 (2001).
S. P. Ahrenkiel, S. H. Xin, P. M. Reimer, J. J. Berry, H. Luo, S. Short, M. Bode, M. Aljassim, J. R. Buschert, and J. K. Furdyna, "Self-Organized Formation of Compositionally Modulated ZnSe(1-x)Te(x) Superlattices", Physical Review Letters, 75, 1586-1589 (1995).
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