Harry Efstathiadis

Harry Efstathiadis

Ph.D.
Harry Efstathiadis
Associate Professor of Nanoengineering

Contact

Phone Number:
518-437-8605
Office Address:
NFE
4318
Location
Albany
Faculty/Staff
Faculty
Department
Nanoengineering
College
College of Nanoscale Science + Engineering

Professional Background

  • Ph.D. (Experimental Condensed-Matter Physics) 1997, City University of New York
  • M.S. (Physics) 1991, City College of New York

Areas of Research

  • Photovoltaics (CuInGaSe2 (CIGS), a-Si, p-Si, Perovskites)
  • Li-ion batteries (Liquid and solid electrolytes)
  • Sensors - Anti-reflective coatings
  • Solid-State air filter for face masks
  • Thin film deposition and characterization

Research Description

Professor Efstathiadis' research is focused on the following areas:

Thin-film solar cells
CIGS
This project includes the development of chemical (using CIGS nanoparticles) and sputter (bi-layer, co-sputtering) deposition processes for the absorber layer, low-cost methods for selenization and sulfurization, and studies of flexible substrates, barrier, and alternative to CdS buffer layers. The project also involves photovoltaic (PV) device fabrication and testing.

a-Si and nc-Si
This project is focused on process development for thin-film a-Si and p-Si by evaporation and high frequency Plasma Enhanced Chemical Vapor Deposition (PECVD) and anti-reflection and passivation coatings, front contact metallization for PV devices.

Li-ion batteries
In a Li-ion battery a solid electrolyte interphase (SEI) is formed on a graphitic anode surface during the first electrochemical cycle. In this project several formation methods in full Li-ion cells are investigated to study their impact on Li distribution at the anode interface. To evaluate the impact of formation both on performance and at a physical level, full cells were assembled, formed and cycled at various rates then disassembled and the electrodes were measured using the non-destructive Li nuclear reaction analysis (Li-NRA) measurements. Probing the immobile Li as a consequence of formation procedure and cycling can provide insight into charge transfer and cycle life limitations.

Li-ion Batteries - Solid Electrolytes
This project is focused on the development by RF-magnetron sputtering and characterization of different classes of solid lithium-ionic conductors, fabrication of all-solid state microbatteries using photo lithography, and electrochemical evaluation testing. One promising compound is lithium aluminum titanium phosphate (LATP), a NASICON-like solid electrolyte whose chemical compound follows the structure Li1+xAlxTi2-x(PO4)3.

Sensors - Anti-reflective coatings
Infrared sensors are being developed for a variety of defense and commercial systems applications. Oblique-angle deposition has been used to tailor the refractive index of porous, nanostructured SiO2 materials, and to build high-performance step-graded refractive index structures on glass and other relevant substrates. Step-grade designs enable the formation of AR structures that combine broadband and omnidirectional characteristics. In this work, we will develop on large areas the oblique angle deposition process of nanostructured coating technology for IR sensing applications and report results from step-graded antireflection coatings on silicon substrates

Solid-State air filter for face masks
The aim of this project is to fabricate using photolithography and test an all solid electrostatic air filter that can be integrated with commercially available respirators and face masks for personnel protection from viruses including COVID19. The filtration device is mechanically robust, reusable for hundreds or thousands of times after simple cleaning, and kills all biological agents irrespective of size.

Thin film deposition and characterization
Low pressure thermal and plasma enhanced chemical vapor film depositions of silicon and carbon based alloys for hard coating and antireflective coatings for IR-windows.

Awards

Materials Research Society - Finalist at the MRS Entrepreneurship Challenge, San Francisco, CA (2006).

Publications

  1. Large Scale Laser Crystallization of Solution-based Alumina-doped Zinc Oxide (AZO) Nanoinks for Highly Transparent Conductive Electrode, Q Nian, M Callahan, M Saei, D Look, H Efstathiadis, J Bailey, G. Cheng, 2015, Scientific Reports, Nature (2016), Accepted manuscript.
  2. Characterization of Cu(In,Ga)Se2 (CIGS) films with varying gallium ratios for thin-film photovoltaic (PV) devices”, B. Peace, J. Claypoole, N. Sun, D. Dwyer, M. Eisaman, P. Haldar, and H. Efstathiadis, Journal of Alloys and Compounds 657, 873-877 (2016).
  3. Development of Ge PIN photodetectors on 300 mm Si wafers for near-infrared sensing, J. Zeller, H. Efstathiadis, G. Bhowmik, P. Haldar, N. Dhar, J. Lewis, P. Wijewarnasuriya, Y. Puri, and A. Sood, International Journal Engr. Res. Tech. 8, 23-33 (2015).
  4. Design and development of wafer-level near-infrared micro-camera, J. Zeller, C. Rouse, H. Efstathiadis, P. Haldar, N. Dhar, J. Lewis, P. Wijewarnasuriya, Y. Puri, and A. Sood, Proc. SPIE 9609 960900 (2015). Best Paper Award. 
  5. Textured (111) crystalline silicon thin film growth directly on flexible glass by e-beam evaporation, S. McMahon, A. Chaudhari, R Vispute, Z. Zhouying and H. Efstathiadis Materials Letters 158 269 (2015).
  6. Development Of Large Area Nanostructured Antireflection Coatings For EO/IR Sensor Applications, A. Sood, G. Pethuraja, R. Welser, Y. Puri, N. Dhar, P. Wijewarnasuriya, J. Lewis, H. Efstathiadis, P. Haldar, E. Fred Schubert, Int. Journal of NanoScience and Nanotechnology, 6 2, 57, (2015).
  7. Highly transparent conductive electrode with ultra-low HAZE by grain boundary modification of aqueous solution fabricated alumina-doped zinc oxide nanocrystals, Q. Nian, M. Callahan, D. Look, H. Efstathiadis, J. Bailey, and G. J. Cheng, Applied Physics Letters Materials, 3, 062803 (2015). 
  8. Development and characterization of transparent and conductive InZnO films by magnetron sputtering at room temperature”, J. Alexander, N. Sun, R. Sun, H. Efstathiadis, and P. Haldar, Journal of Alloys and Compounds (2015).
  9. TiO2 Nanotubes: Interdependence of Substrate Grain Orientation and Growth Rate, S. Leonardi, F. Di Fonzo, A. Li Bassi, T. M. Murray, H. Efstathiadis and J. Kunze-Liebhäuser, Applied Materials & Interfaces 7:3 1662 (2015).
  10. Highly textured Si [111] crystalline thin-film on buffered soda-lime glass by e-beam evaporation, S. McMahon, A. Chaudhari, R Vispute, H. Efstathiadis, and Z. Zhouying, Materials Letters 140 123-126 (2015).
  11. A Review of Growth, Functionalization, and use of Graphene for Detection Applications, A. Sood, I. Lund, Y. Puri, H. Efstathiadis, P. Haldar, N. Dhar, Dennis L. Polla, M. Dubey and E. Zakar, Int. Journal of NanoScience and Nanotechnology, 5 2, 133, (2014).
  12. Crystalline Al2O3/MgO films on soda-lime glass, A. Chaudhari, R Vispute T. Murray, and H. Efstathiadis, Materials Letters 136, 407-410, (2014).
  13. Design and development of SiGe based near-infrared photodetectors, J. Zeller, Y. Puri, A. Sood, S McMahon, H. Efstathiadis, P. Haldar, and N. Dhar, Proc. SPIE 9220 922006 (2014)
  14. The cycling performance and surface passivation qualities of a heterogeneous amorphous NixSiOy/polycrystalline NiSi2 core shell nanowire used as a Li-ion battery anode, I. Lund, J. Lee, H. Efstathiadis, P. Haldar, and R Geer, J. Electrochem. Soc. 161(12): A1772-A1776 (2014).
  15. On the limits to Ti incorporation into Si using pulsed laser melting, J. Mathews, A. Akey, D. Recht, G. Malladi, H. Efstathiadis, M. Aziz, and J. Warrender, Appl. Phys. Lett., 104, 112102 (2014)
  16. Extremely Highly Textured MgO [111] Crystalline Films on Soda-Lime Glass by E-Beam, A. Chaudhari, R. D. Vispute, H. Efstathiadis, Materials Letters 121 47-49 (2014).
  17. Characterization of alternative proprietary cadmium sulfide (CdS) chemical bath deposition (CBD) chemistry for CIGS-based solar cells, J. N. Alexander, S. Higashirya, D. Caskey , H. Efstathiadis, and P. Haldar, Solar Energy Materials & Solar Cells 125 47–53 (2014).
  18. Influence of Catalyst Layer Thickness on the Growth of Nickel Silicide Nanowires and its Application for Li-Ion Batteries, I. Lund, J-H Lee, H. Efstathiadis, P. Haldar, R. E Geer, Journal of Power Sources, 246 117-123 (2014).
  19. Spatially Resolved Mobility and Carrier Lifetime Correlation to Optoelectronic Properties in Cu(In1-x,Gax)Se2 Photovoltaics, A. Ashraf, D. Dissanayake, D. Dwyer, H. Efstathiadis, J. Wax, M. D. Eisaman, in: Proceedings of the 39th Photovoltaic Specialists Conference, Tampa, FL (2013)
  20. Large-Area Nanostructured Self-Assembled Antireflection Coatings for Photovoltaic Devices, G. Pethuraja, A. Sood, R. Welser, A. K. Sood, H. Efstathiadis, P. Haldar, and J. Harrvey, in: Proceedings of the 39th Photovoltaic Specialists Conference, Tampa, FL (2013).
  21. Current-Voltage Characteristics of ITO/p-Si and ITO/n-Si Contact Interfaces, G. Pethuraja, R. Welser, A. Sood, C Lee, N Alexander, H. Efstathiadis, P. Haldar, and J. Harvey, Advances in Materials Physics and Chemistry, 2, 2, 59-62 (2012).
  22. Effect of Ge incorporation on band gap and photosensitivity of amorphous SiGe thin films, G. Pethuraja, R. Welser, A. Sood, C. Lee, N. Alexander, H. Efstathiadis, P. Haldar, J. Harvey, Materials Science and Applications, 3, 2, 67-71 (2012). 
  23. TiO2 Nanotubes - Interdependence of Substrate Grain Orientation and Growth Characteristics, S. Leonardi, A. Li Bassi, V. Russo, F. Difonzo, O. Paschos, T. Murray, H. Efstathiadis, J. Kunze, Journal of Physical Chemistry J. Phy. Chem 116, 384-392, (2012).
  24. “Silicon Nanowire Development for Solar Cell Devices G. Pethuraja, H. Efstathiadis, C. Rouse, M. Rane-Fondacaro, A. Sood and P. Haldar, in: Proceedings of the 38th Photovoltaics Specialists Conference, Austin, TX (June 2012).
  25. Enhanced Power Factor of Indium Co-Doped ZnO:Al Thin Films Deposited by RF Sputtering for High Temperature Thermoelectrics Journal of Alloys and Compounds, S. Teehan, H. Efstathiadis, P. Haldar, Journal of Alloys and Compounds 509 1094–1098 (2011).
  26. Development of smooth CuInGa precursor films for CuIn1-xGaxSe2 thin film solar cell applications, M. Hansen, H. Efstathiadis, and P. Haldar, Thin Solid Films 519, 19, 6297 (2011).
  27. Metal oxide buffer layer for improving performance of polymer solar cell Z. Zhao, R. Teki, H. Efstathiadis, P. Haldar, Applied Surface Science 256 6053–6056 (2010).
  28. Characterization of Chemical Bath Deposited Buffer Layers for Thin Film Solar Cell Applications D. Dwyer, R. Sun, H. Efstathiadis, and P. Haldar, Physica Status Solidi A 207, 10, 2272 (2010).
  29. Temperature dependent thermal conductivity of Si/SiC superlattice, M. Mazumder, T. Borca-Tasciuc, S.Teehan, E. Stinzianni, H. Efstathiadis, and S. Solovyov, Appl. Phys. Lett., 96 093103 (2010)
  30. Selenization of Co-sputtered CuInAl Precursors, D. Dwyer, I. Repins, H. Efstathiadis, P. Haldar, Solar Energy Materials & Solar Cells 94, 598-605 (2010)
  31. Formation of a Low Ohmic Contact Nickel Silicide Layer on Textured Silicon Wafers Using Electroless Nickel Plating, A. Nguyen, M. V. Rane-Fondacaro, H. Efstathiadis, P. Haldar, L. Michaelson, C. Wang, K. Munoz, T. Tyson, A. Gallegos, in: Proceedings of the 26th European Photovoltaic Solar Energy Conference, Valencia, Spain (2010).
  32. Role of Temperature and Duration of the Crystallization Anneal in the Texture Development of YBCO Prepared by TFA-MOD, E. Stinzianni, H. Efstathiadis, K. A. Dunn, and P. Haldar, Applied Superconductivity, IEEE Transactions on, (2009).
  33. Relationship of Aluminum Grain Size to the Grain Size of Polycrystalline Silicon Produced By the Aluminum-Induced Crystallization of Amorphous Silicon, E. Stinzianni, K. Dunn, H. Efstathiadis, and P. Haldar, in: Proceedings of the 34th Photovoltaic Specialists Conference, Philadelphia, PA (2009).
  34. Feasibility of Improving Front Metallization Lines for Photovoltaic Devices, A. Nguyen, H. Efstathiadis, A. Fioramonti, D. Morrissey, P. Haldar, in: Proceedings of the 34th Photovoltaic Specialists Conference, Philadelphia, PA (2009).
  35. Deposition of CuInAlSe2 films using co-sputtered precursors and selenization, D. Dwyer, I. Repins, H. Efstathiadis, P. Haldar, in: Proceedings of the 34th Photovoltaic Specialists Conference, 247–251, Philadelphia, PA (2009). 
  36. Two-dimensional Computer Modeling of Single Junction a-Si:H Solar Cells, C. Lee, H. Efstathiadis, J. E. Raynolds, P. Haldar, in: Proceedings of the 34th Photovoltaic Specialists Conference, Philadelphia, PA (2009).
  37. Synthesis of Platinum Nanoparticles by Aerosol Assisted Deposition Method, O. Paschos, P. Choi, H. Efstathiadis, and P. Haldar, Thin Solid Films 516, pp. 3796-3801, (2008).
  38. Deposition of Large Area, Directly Textured, ZnO:Al Films by Reactive-Environment, Hollow Cathode Sputtering, M. Patel, S. Guo, A. Stavrides, J. Cambridge, L. Le, H. Efstathiadis, P. Haldar, and A.E. Delahoy, in: Proceedings of the 33rd Photovoltaic Specialists Conference, Philadelphia, PA (2008).
  39. An Innovative Undergraduate Nanoscience and Technology Program for Adult Learners, S. Anwar, A. Peskin, H. Dhillon, and H. Efstathiadis, E-Proceedings of the 2008 American Society for Engineering Education/ Conference for Industry and Education Collaboration, Annual Conference Proceedings (2008).
  40. Thickness Dependent Effects of Thermal Annealing and Solvent Vapor Treatment of Poly (3-hexylthiophene) and Fullerene Bulk Heterojunction Photovoltaics, L. Rice, Z. Zhao, H. Efstathiadis, P. Haldar, Mat. Res. Soc. Symp. Proc., Boston, MA (2008).
  41. M. Mazumder, Theodorian Borca-Tascicuc, H. Efstathiadis and T. Yu, “Thermal conductivity measurement of silicon/ silicon carbide superlattice”, Mat. Res. Soc. Symp. Proc., 861, 9 (2008)
  42. Biaxially Textured Constantan Alloy (Cu 55 wt%, Ni 44 wt%, Mn 1 wt%) Substrates for YBa2Cu3O7-x coated conductors, C. V. Varanasi, L. Brunke, J. Burke, I. Maartense, N. Padmaja, H. Efstathiadis, A Chaney and P. Barnes, Supercond. Sci. Technol. 19, pp. 896-901, (2006).
  43. Growth of Textured MgO Through e-beam Evaporation and Inclined Substrate Deposition, Y. Xu, C. H. Lei, B. Ma, H. Evans, H. Efstathiadis, M. Rane, M. Massey, U. Balachandran and R. Bhattacharya, Supercond. Sci. Technol. 19, pp 835-843 (2006).
  44. Numerical Thermal Simulation of Cryogenic Power Modules Under Liquid Nitrogen Cooling, H. Ye, H. Efstathiadis, and P. Haldar, J. Electron. Packag., 128 (3), pp 267-272 (2005).
  45. Photoluminescence and Structural Properties of Er-Implanted Amorphous SiCxOy Thin Films, S. Gallis, M. Huang, H. Efstathiadis, E. Eisenbraun, E. Nyein, U. Hommerich, and A. E. Kaloyeros, Appl. Phys. Lett., 87, pp. 091901-3 (2005).
  46. Spectroellipsometric Characterization of Au- Y2O3-stabilized ZrO2 Nanocomposite Films, G. Sirinakis, R. Siddique, K. Dunn, H. Efstathiadis, M. Carpenter, A. E. Kaloyeros, and L. Sun, J. Mat. Res. 20 (12) pp 3320-3328 (2005).
  47. Improving Performance of Cryogenic Power Electronics, P. Haldar, H. Ye, H. Efstathiadis, J. Raynolds, M. J. Hennessy, O. M. Mueller, and E. K. Mueller, Applied Superconductivity, IEEE Transactions on, 15 (2), pp. 2370-2375 (2005).
  48. Fluorine Analysis and Microstructural Evolution in Coated YBCO Conductor Deposited by Metal Trifluoroacetate Process, M. V. Rane, H. Efstathiadis, H. Bakhru, M. W. Rupich, X. Li, W. Zhang, T. Kodenkandath, and P. Haldar, Applied Superconductivity, IEEE Transactions on, 16, pp. 2638-2641, (2005).
  49. Synthesis and Spectroellipsometric Characterization of Y2O3-stabilized ZrO2-Au Nanocomposite Films for Smart Sensor Applications, G. Sirinakis, L. Sun, R. Siddique, H. Efstathiadis, M. A. Carpenter, and A. E. Kaloyeros, Mat. Res. Soc. Symp. Proc., 846, 269-274, Boston, MA (2005).
  50. Fabrication of Nanorod Arrays for Organic Solar Cell Applications, S. Huang, H. Efstathiadis, and P. Haldar, H. G. Lee, B. Landi, and R. Raffaelle, Mater. Res. Soc. Symp. Proc., 836, 49-53, Boston, MA (2005).
  51. Erbium-doped Amorphous- Si-C-O Matrix (a-SiCxOy:Er) - A Novel Silicon-based Material for Near-infrared Optoelectronic Applications, S. Gallis, M. Huang, V. Nikas, H. Efstathiadis, E. Eisenbraun, E. Nyein, U. Hommerich, and A. E. Kaloyeros, Mat. Res. Soc. Symp. Proc., 866, San Francisco, CA (2005).
  52. Carbon Nanotubes for Space Photovoltaic Applications, B. J. Landi, P. Denno, R. DiLeo, W. VanDerveer, R. Raffaelle, H. Efstathiadis, and P. Haldar, 19th Space Photovoltaics Research and Technology (SPRAT) conference proceedings, Cleveland, OH (2005).
  53. Large Area Deposition of Si/SiC Quantum Well Films for Thermoelectric Generator Applications, T. Yu, H. Efstathiadis, R. Matyi, P. Haldar, S. Ghamaty and N, Elsner, Mat. Res. Soc. Symp. Proc., 886, Boston, MA (2005).
  54. Microstructural and Compositional Analysis of YBCO films Grown by MOCVD Before and After GCIB Smoothing, M. Hatzistergos, H. Efstathiadis, J. Reeves, V. Selvamanickam, L. Allen, E. Lifshin, and P. Haldar, Physica C, 405, pp. 179-186 (2004).
  55. Spectroscopic Ellipsometry and Grazing x-ray Reflectrometry Analyses on Tungsten Carbide Films for Diffusion Barrier in Copper Metallization Schemes, L. Sun, J-C Fouere, T. Summet, M. Hatzistergos, and H. Efstathiadis, Thin Solid Films, 455-456, pp. 519-524, (2004).
  56. Photoluminescence at 1540 nm from Erbium-Doped Amorphous Silicon Carbide Films, S. Gallis, H. Efstathiadis, M. Huang, E. Nyein, U. Hommerich, and A. E. Kaloyeros, J. Mat. Res., 19(8), pp. 2389-2393, (2004).
  57. Optical Properties of Hafnium Oxide Films Grown by Laser Assisted Molecular Beam Deposition, L. Sun, J. Garvey, R. DeLeon, G. Tompa, R. Moore, and H. Efstathiadis, Mater. Res. Soc. Symp. Proc., 811 Boston, MA (2004).
  58. Room-Temperature Photoluminescence at 1540 nm From Amorhous Silicon Carbide Films Implanted With Erbium, S. Gallis, H. Efstathiadis, M. Huang, A. E. Kaloyeros, E. Nyein, and U. Hommerich, Mater. Res. Soc. Symp. Proc. 815, 181-186, Boston, MA (2004).
  59. Investigation of Nanostructure-Polymer Blend Solar Cells, S. Huang, H. Efstathiadis, P. Haldar, H. G. Lee, B. Landi and R. Raffaelle, 2nd International Energy Conversion Engineering Conference (IECEC) Proceedings, 12, 232-236, Providence, RI (2004).
  60. Microstructural and Electrical Characterization of Gas Cluster Ion Beam Smoothed YBCO Films, M. S. Hatzistergos, H. Efstathiadis, E. Lifshin, A. Kaloyeros, J. Reeves and V. Selvamanickam, L. Allen and R. MacCrimmon, Applied Superconductivity, IEEE transactions on, 13, pp. 2470-2473, (2003).
  61. Thermal Chemical Vapor Deposition of Silicon Carbide Films as Protective Coatings for Microfluidic Structures, S. Gallis, U. Futschik, W. Sherwood, S. Hayes, C. G. Fountzoulas, J. Castracane, A. E. Kaloyeros, and H. Efstathiadis, Mat. Res. Soc. Symp. Proc., 742, 85-90, Boston, MA (2003).
  62. Laser Assisted Molecular Beam Deposition of Thin Films for Gate Dielectrics Applications, R. DeLeon, J. Garvey, G. Tompa, R. Moore and H. Efstathiadis, Mat. Res. Soc. Symp. Proc. 768, 93-98, Boston, MA (2003).
  63. Effect of Deposition Parameters on the Microstructural Evolution and Electrical Properties of Charge-Balanced Barium Strontium Titanate Ferroelectric Thin Films Deposited on Ceramic Substrates by Pulsed Laser Deposition, C. Fountzoulas, S. Tidrow, M. Hatzistergos, and H. Efstathiadis, Mater. Res. Soc. Symp. Proc., 784, 287-292, Boston, MA (2003).
  64. Microstructural and Compositional Evolution of High Temperature Superconducting Films, M. Hatzistergos, H. Efstathiadis, A. E. Kaloyeros, J. Reeves, V. Selvamanickam, L. Allen, and R. MacCrimmon, Mater. Res. Soc. Symp. Proc., 784, Boston, MA (2002).
  65. A Novel Silicon-carbon Precursor for Oligomer Chemical Vapor Deposition of Silicon Carbide for Harsh Environmental Applications, U. Futschik, H. Efstathiadis, J. Castracane, and A. E. Kaloyeros, L. Macdonald, S. Hayes, and C. Fountzoulas, Mat. Res. Soc. Symp. Proc., 697, 153-158, Boston, MA (2001).
  66. Interfacial Effects in VO/Al/Si(100) Thin Film Heterostructures, K. Dovidenko, S. Beasor, A. Topol, H. Efstathiadis, S. Oktyabrsky and A. Kaloyeros, Mat. Res. Soc. Symp. Proc., Boston, 654, 1-6, MA (2000).
  67. Low Temperature Thermal Chemical Vapor Deposition of Silicon Nitride Thin Films for Microelectronics Applications, S. Skordas, G. Sirinakis, W. Yu, D. Wu, H. Efstathiadis and A. E. Kaloyeros, Mat. Res. Soc. Symp. Proc., 606, 109-114, Boston, MA (2000).
  68. Metal-organic Chemical Vapor Depositions of SrS:Cu for Applications in Electroluminescent Devices, K. Barth, J. Lau, H. Efstathiadis, G. Peterson, G. Nuesca, A. E. Kaloyeros, R. Tuenge, and C. King, Information Display Soc. Symp. Proc. (1998).
  69. Metal-organic Chemical Vapor Deposition of ZnS:Mn films for thin film Electroluminescent devices, A. Topol, H. Efstathiadis, G. Nuesca, S. Lane, B. Taylor, K. Barth, J. Lau, G. Peterson, R. Tuenge, C. King, and A. E. Kaloyeros, Information Display Soc. Symp. Proc. (1998).
  70. Atomic Bonding in Amorphous Carbon Alloys: A Thermodynamic Approach, H. Efstathiadis, Z. Akkerman, and F. W. Smith, J. Appl. Phys. 79, pp. 2954-2967 (1996).
  71. Thermal stability of Diamond-like carbon films, Z. L. Akkerman, H. Efstathiadis, and F. W. Smith, J. Appl. Phys. 80, 5, pp. 3068-3075 (1996).
  72. Thermodynamic Modeling of the Local Atomic Order in Amorphous Alloys Based on Silicon and Germanium, H. Efstathiadis and F. W. Smith, Philosophical Magazine B, 70, pp. 547-556 (1994).
  73. Atomic bonding in amorphous hydrogenated silicon carbide alloys: A statistical thermodynamic approach, H. Efstathiadis, Z. Yin, and F. W. Smith, Physical Review B 46 (20), pp. 13119-13130 (1992).

Book Chapters

  1. Review of Graphene Technology and Its Applications for Electronic Devices, A. Sood, I. Lund, Y. Puri, H. Efstathiadis, P. Haldar, N. Dhar, J. Lewis, M. Dubey, E. Zakar, P. Wijewarnasuriya, D. Polla and M. Fritze, Chapter in Graphene - New Trends and Developments, Intech Publications (2015).
  2. SiGe based visible-NIR photodetector technology for optoelectronic applications, A. Sood, J. Zeller, R. Richwine, Y. Puri, H. Efstathiadis, P. Haldar, N. Dhar, and D. Polla, Chapter in Advances in Optical Fiber Technology: Fundamental Optical Phenomena and Applications, Intech Publications (2015).

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