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Tyler Grassman

  • Assistant Professor, Materials Science Engineering
  • Dept. of Materials Science and Engineeringg
    488 Watts Hall
    Columbus, OH 43210
  • 614-688-1704

Honors

  • April, 2019

    Lumley Research Award.

  • IEEE Golden Reviewer.

Chapters

2011

  • 2011. "Chapter 14: III-V Solar Cells on Silicon." In III-V Compound Semiconductors: Integration with Silicon-Based Microelectronics, edited by T. Li, M. Mastro, A. Dadgar,

Journal Articles

2018

  • Galiano, K.; Deitz, J.I.; Carnevale, S.D.; Gleason, D.A. et al., 2018, "Spatial correlation of the Ec-0.57 eV trap state with edge dislocations in epitaxial n-type gallium nitride." Journal of Applied Physics 123, no. 22,
  • Chmielewski, D.J.; Lepkowski, D.L.; Boyer, J.T.; Grassman, T.J. et al., 2018, "Comparative Study of similar to 2.05 eV Lattice-Matched and Metamorphic (Al)GaInP Solar Cells Grown by MOCVD." IEEE JOURNAL OF PHOTOVOLTAICS 8, no. 6, 1601-1607 - 1601-1607.
  • Deitz, J.I.; Karki, S.; Marsillac, S.X.; Grassman, T.J. et al., 2018, "Bandgap profiling in CIGS solar cells via valence electron energy-loss spectroscopy." JOURNAL OF APPLIED PHYSICS 123, no. 11,
  • Dahiya, V.; Deitz, J.I.; Hollingshead, D.A.; Carlin, J.A. et al., 2018, "Investigation of digital alloyed AlInSb metamorphic buffers." JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 36, no. 2,

2017

  • Jackson, C.M.; Arehart, A.R.; Grassman, T.J.; McSkimming, B. et al., 2017, "Impact of Surface Treatment on Interface States of ALD Al2O3/GaN Interfaces." ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY 6, no. 8, P489-P494 - P489-P494.
  • Demuth, J.; Fahrenkrug, E.; Ma, L.; Shodiya, T. et al., 2017, "Electrochemical Liquid Phase Epitaxy (ec-LPE): A New Methodology for the Synthesis of Crystalline Group IV Semiconductor Epifilms." JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139, no. 20, 6960-6968 - 6960-6968.
  • Karki, S.; Paul, P.K.; Rajan, G.; Ashrafee, T. et al., 2017, "In Situ and Ex Situ Investigations of KF Postdeposition Treatment Effects on CIGS Solar Cells." IEEE JOURNAL OF PHOTOVOLTAICS 7, no. 2, 665-669 - 665-669.

2016

  • France, R.M.; Dimroth, F.; Grassman, T.J.; King, R.R., 2016, "Metamorphic epitaxy for multijunction solar cells." MRS BULLETIN 41, no. 3, 202-209 - 202-209.
  • Deitz, J.I.; Carnevale, S.D.; De Graef, M.; McComb, D.W. et al., 2016, "Characterization of encapsulated quantum dots via electron channeling contrast imaging." APPLIED PHYSICS LETTERS 109, no. 6,
  • Garcia-Tabares, E.; Carlin, J.A.; Grassman, T.J.; Martin, D. et al., 2016, "Evolution of silicon bulk lifetime during III-V-on-Si multijunction solar cell epitaxial growth." PROGRESS IN PHOTOVOLTAICS 24, no. 5, 634-644 - 634-644.
  • Grassman, T.J.; Chmielewski, D.J.; Carnevale, S.D.; Carlin, J.A. et al., 2016, "GaAs0.75 P-0.25/Si Dual-Junction Solar Cells Grown by MBE and MOCVD." IEEE JOURNAL OF PHOTOVOLTAICS 6, no. 1, 326-331 - 326-331.

2015

  • S. D. Carnevale, J. I. Deitz, J. A. Carlin, Y. N. Picard, D. W. McComb, M. D. Graef, S. A. Ringel and T. J. Grassman, 2015, Applications of Electron Channeling Contrast Imaging for the Rapid Characterization of Extended Defects in III-V/Si Heterostructures. IEEE Journal of Photovoltaics 5, no. 2, 676-682 - 676-682.
  • Almansouri, I.; Bremner, S.; Ho-Baillie, A.; Mehrvarz, H. et al., 2015, "Designing Bottom Silicon Solar Cells for Multijunction Devices." IEEE JOURNAL OF PHOTOVOLTAICS 5, no. 2, 683-690 - 683-690.
  • Deitz, J.I.; Carnevale, S.D.; Ringel, S.A.; McComb, D.W. et al., 2015, "Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization." JOVE-JOURNAL OF VISUALIZED EXPERIMENTS no. 101,
  • Carnevale, S.D.; Deitz, J.I.; Carlin, J.A.; Picard, Y.N. et al., 2015, "Applications of Electron Channeling Contrast Imaging for the Rapid Characterization of Extended Defects in III-V/Si Heterostructures." IEEE JOURNAL OF PHOTOVOLTAICS 5, no. 2, 676-682 - 676-682.
  • Paul, P.K.; Cardwell, D.W.; Jackson, C.M.; Galiano, K. et al., 2015, "Direct nm-Scale Spatial Mapping of Traps in CIGS." IEEE JOURNAL OF PHOTOVOLTAICS 5, no. 5, 1482-1486 - 1482-1486.

2014

  • Chmielewski, D.; Grassman, T.; Carlin, A.; Carlin, J. et al., 2014, Metamorphic GaAsP Tunnel Junctions for High Efficiency III-V/IV Multijunction Solar Cell Technology. IEEE Journal of Photovoltaics 4, no. 5,
  • Carnevale, S.D.; Deitz, J.I.; Carlin, J.A.; Picard, Y.N. et al., 2014, "Rapid misfit dislocation characterization in heteroepitaxial III-V/Si thin films by electron channeling contrast imaging." APPLIED PHYSICS LETTERS 104, no. 23,
  • Grassman, T.J.; Carlin, J.A.; Galiana, B.; Yang, F. et al., 2014, "MOCVD-Grown GaP/Si Subcells for Integrated III-V/Si Multijunction Photovoltaics." IEEE JOURNAL OF PHOTOVOLTAICS 4, no. 3, 972-980 - 972-980.

2013

  • Grassman, T.J.; Carlin, J.A.; Galiana, B.; Yang, L-M. et al., 2013, "Nucleation-related defect-free GaP/Si(100) heteroepitaxy via metal-organic chemical vapor deposition." APPLIED PHYSICS LETTERS 102, no. 14,

2011

  • Swaminathan, K.; Grassman, T.J.; Yang, L-M.; Gu, Q. et al., 2011, "Optically-aligned visible/near-infrared dual-band photodetector materials and devices on GaAs using metamorphic epitaxy." JOURNAL OF APPLIED PHYSICS 110, no. 6,
  • Ratcliff, C.; Grassman, T.J.; Carlin, J.A.; Ringel, S.A., 2011, "High temperature step-flow growth of gallium phosphide by molecular beam epitaxy and metalorganic chemical vapor deposition." APPLIED PHYSICS LETTERS 99, no. 14,
  • Swaminathan, K.; Yang, L-M.; Grassman, T.J.; Tabares, G. et al., 2011, "Metamorphic In0.20Ga0.80As p-i-n photodetectors grown on GaAs substrates for near infrared applications." OPTICS EXPRESS 19, no. 8, 7280-7288 - 7280-7288.

2010

  • Grassman, T.J.; Brenner, M.R.; Gonzalez, M.; Carlin, A.M. et al., 2010, "Characterization of Metamorphic GaAsP/Si Materials and Devices for Photovoltaic Applications." IEEE TRANSACTIONS ON ELECTRON DEVICES 57, no. 12, 3361-3369 - 3361-3369.
  • Lee, J.S.; Bishop, S.R.; Grassman, T.J.; Kummel, A.C., 2010, "Plasma nitridation of Ge(100) surface studied by scanning tunneling microscopy." SURFACE SCIENCE 604, no. 15-16, 1239-1246 - 1239-1246.

2009

  • Tran, N.L.; Bishop, S.R.; Grassman, T.J.; Poon, G.C. et al., 2009, "NO chemisorption dynamics on thick FePc and ttbu-FePc films." JOURNAL OF CHEMICAL PHYSICS 130, no. 17,
  • Grassman, T.J.; Bishop, S.R.; Kummel, A.C., 2009, "Density functional theory study of first-layer adsorption of ZrO2 and HfO2 on Ge(100)." MICROELECTRONIC ENGINEERING 86, no. 3, 249-258 - 249-258.
  • Feldwinn, D.L.; Clemens, J.B.; Shen, J.; Bishop, S.R. et al., 2009, "Anomalous hybridization in the In-rich InAs(001) reconstruction." SURFACE SCIENCE 603, no. 22, 3321-3328 - 3321-3328.
  • Grassman, T.J.; Brenner, M.R.; Rajagopalan, S.; Unocic, R. et al., 2009, "Control and elimination of nucleation-related defects in GaP/Si(001) heteroepitaxy." APPLIED PHYSICS LETTERS 94, no. 23,

2008

  • Grassman, T.J.; Bishop, S.R.; Kummel, A.C., 2008, "An atomic view of Fermi level pinning of Ge(100) by O-2." SURFACE SCIENCE 602, no. 14, 2373-2381 - 2373-2381.

2007

  • Winn, D.L.; Hale, M.J.; Grassman, T.J.; Kummel, A.C. et al., 2007, "Direct and indirect causes of Fermi level pinning at the SiO/GaAs interface." JOURNAL OF CHEMICAL PHYSICS 126, no. 8,
  • Winn, D.L.; Hale, M.J.; Grassman, T.J.; Sexton, J.Z. et al., 2007, "Electronic properties of adsorbates on GaAs(001)-c(2x8)/(2x4)." JOURNAL OF CHEMICAL PHYSICS 127, no. 13,

2005

  • Hale, M.J.; Winn, D.L.; Grassman, T.J.; Kummel, A.C. et al., 2005, "Chemically resolved scanning tunneling microscopy imaging of Al on p-type Al0.1Ga0.9As(001)-c(2x8)/(2x4)." JOURNAL OF CHEMICAL PHYSICS 122, no. 12,

2004

  • Grassman, T.J.; Poon, G.C.; Kummel, A.C., 2004, "Low coverage spontaneous etching and hyperthermal desorption of aluminum chlorides from Cl-2/Al(111)." JOURNAL OF CHEMICAL PHYSICS 121, no. 18, 9018-9030 - 9018-9030.

2003

  • Poon, G.C.; Grassman, T.J.; Gumy, J.C.; Kummel, A.C., 2003, "Direct and precursor-mediated hyperthermal abstractive chemisorption of Cl-2/Al(111)." JOURNAL OF CHEMICAL PHYSICS 119, no. 18, 9818-9828 - 9818-9828.

2000

  • Grassman, T.J.; Knowles, M.K.; Marcus, A.H., 2000, "Structure and dynamics of fluorescently labeled complex fluids by Fourier imaging correlation spectroscopy." PHYSICAL REVIEW E 62, no. 6, 8245-8257 - 8245-8257.
  • Knowles, M.K.; Grassman, T.J.; Marcus, A.H., 2000, "Measurement of the dynamic structure function of fluorescently labeled complex fluids by Fourier imaging correlation spectroscopy." PHYSICAL REVIEW LETTERS 85, no. 13, 2837-2840 - 2837-2840.

Presentations

  • "Atomic-scale Digital Alloying for III-Sb Metamorphic Buffers." 2018, Presented at Materials Science & Technology Meeting,
  • "Metamorphic Pathways toward Long-Wavelength InAsSb via MBE and MOCVD." 2018, Presented at 34th North American Conference on Molecular Beam Epitaxy,
  • "Correlative Defect Characterization in Semiconductors with Electron Channeling Contrast Imaging and Scanning Deep Level Transient Spectroscopy." 2018, Presented at Microscopy & Microanalysis Meeting,
  • "Continued Progress Toward High-Performance Monolithic GaAsP/Si Tandem Solar Cells." 2018, Presented at 7th IEEE World Conference on Photovoltaic Energy Conversion,
  • "Infrared Metamorphic III-V-Sb Materials Growth at OSU." 2018, Presented at OSU IMR Materials Week,
  • "Continued Progress Toward High-Performance Epitaxial III-V/Si Multijunction Solar Cells." 2018, Presented at Spring Materials Research Society Meeting,
  • "SEM is the New TEM: Recent Advances in Channeling Based Imaging in the SEM." 2017, Presented at OSU IMR Materials Week,
  • "Development of Epitaxial III-V/Si Multijunction Solar Cells." 2017, Presented at Spring Materials Research Society Meeting,
  • "Development of Epitaxial III-V/Si Multijunction Solar Cells." 2016, Presented at Guest Seminar,
  • "Cutting-Edge PV Research and the OSU Perspective." 2016, Presented at OSU Green Home Workshop,
  • "Advances in III-V/Si for Multijunction Solar Cells." 2015, Presented at Materials Science and Technology Meeting,
  • "Progress in the Development of Epitaxial III-V/Si Multijunction Solar Cells." 2015, Presented at Guest Seminar,
  • "Advances in the Development of Epitaxial GaAsP/Si Dual-Junction Solar Cells." 2015, Presented at 57th Electronic Materials Conference,
  • "Progress in the Development of Epitaxial GaAsP/Si Dual-Junction Solar Cells." 2015, Presented at 42nd IEEE Photovoltaic Specialists Conference,
  • "Advances in III-V/Active-Silicon Multijunction Photovoltaics: Progress Toward a Si-Plus Architecture." 2015, Presented at 227th Electrochemical Society Meeting,
  • "Heteroepitaxial Materials Integration and Defect Engineering for Advanced III-V/Si Photovoltaics." 2015, Presented at OSU IMR Materials Week,
  • "Advances in the Development of Epitaxial III-V/Si Multijunction Solar Cells." 2014, Presented at Guest Seminar,
  • "Rapid Extended Defect Characterization in Semiconductor Heterostructures by Electron Channeling Contrast Imaging." 2014, Presented at Space Photovoltaic Research and Technology Conference XXIII,
  • "Progress Toward a Si-Plus Architecture: Epitaxially-Integrable Si Sub-Cells for III-V/Si Multijunction Photovoltaics." 2014, Presented at 56th MRS Electronic Materials Conference,
  • "Progress Toward a Si-Plus Architecture: Epitaxially-Integrable Si Sub-Cells for III-V/Si Multijunction Photovoltaics." 2014, Presented at 40th IEEE Photovoltaic Specialists Conference,
  • "Epitaxially-Grown Metamorphic GaAsP/Si Dual-Junction Solar Cells." 2013, Presented at 39th IEEE Photovoltaic Specialists Conference,
  • "Exploration of Epitaxial Quantum Dots within Wide Band Gap Metamorphic Host Materials for Intermediate Band Solar Cells." 2013, Presented at 39th IEEE Photovoltaic Specialists Conference,
  • "Epitaxial Quantum Dots in the GaAsP/(Si) Metamorphic Materials System." 2012, Presented at Fall Materials Research Society Meeting,
  • "Heterovalent Integration and Metamorphic Materials Engineering for III-V/Si Photovoltaics and Optoelectronics." 2012, Presented at International Materials Research Congress XXI,
  • "Heterovalent Materials Integration and Metamorphic Substrate Engineering for Advanced III-V/Si Photovoltaics." 2011, Presented at Guest Seminar,
  • "Expanding the Palette: Metamorphic Strategies for Extending the Spectrum of Accessible Photovoltaic and Optoelectronic Materials." 2011, Presented at Guest Seminar,
  • "Development of Epitaxially-Integrated Semi-Transparent Metamorphic Buffers for III-V/Si Photovoltaics." 2011, Presented at Space Photovoltaic Research and Technology Conference XXII,
  • "Expanding the Palette: Metamorphic Strategies Over Multiple Lattice Constant Ranges for Extending the Spectrum of Accessible Photovoltaic Materials." 2011, Presented at 37th IEEE Photovoltaic Specialists Conference,
  • "III-V/Si Integration and Metamorphic Substrate Engineering for Advanced Photovoltaics." 2011, Presented at Guest Seminar,
  • "Metamorphic GaAsP and InGaP Photovoltaic Materials on Si for High-Efficiency III-V/Si Multijunction Solar Cells." 2010, Presented at 35th IEEE Photovoltaic Specialists Conference,
  • "Toward Metamorphic Multijunction GaAsP/Si Photovoltaics Grown on Optimized GaP/Si Virtual Substrates using Anion-Graded GaAsyP1-y Buffers." 2009, Presented at 36th IEEE International Symposium on Compound Semiconductors,
  • "Toward Metamorphic Multijunction GaAsP/Si Photovoltaics Grown on Optimized GaP/Si Virtual Substrates using Anion-Graded GaAsyP1-y Buffers." 2009, Presented at 34th IEEE Photovoltaic Specialists Conference,
  • "Toward Metamorphic Multijunction GaAsP/Si Photovoltaics Grown on Optimized GaP/Si Virtual Substrates using Anion-Graded GaAsyP1-y Buffers." 2009, Presented at 51st TMS/IEEE Electronic Materials Conference,
  • "Mitigation of Interface-Induced Defects in III-V/IV Heteroepitaxy: GaAs/Ge and GaP/Si." 2009, Presented at 36th Conference on the Physics and Chemistry of Surface and Interfaces,
  • "Metamorphic GaAsP ~1.7 eV Solar Cell Materials and Structures Grown on Si Substrates using Anion-Graded GaAsyP1-y Buffers." 2008, Presented at Fall Materials Research Society Meeting,
  • "Nucleation of III-V Materials on IV(001) Substrates for Defect-Free Solid Source MBE Heteroepitaxy: GaP/Si vs. GaAs/Ge." 2008, Presented at 50th TMS/IEEE Electronic Materials Conference,
  • "Atomic-Level Analysis of Pinning and Passivation on the Ge(100) Surface: Comparison of O and N." 2007, Presented at 34th Conference on the Physics and Chemistry of Semiconductor Interfaces,
  • "Atomic-Level Analysis of Passivation and High-k Interfaces on Ge(100) for Ge-based MOSFET Devices." 2006, Presented at 37th IEEE Semiconductor Interface Specialists Conference,
  • "Theoretical Analysis of the Interface Between Zr(Hf)O2 and Ge(100) for Ge-based MOSFET Devices." 2006, Presented at AVS 53rd Annual International Symposium,
  • "Microscopic Studies of the SiO/Ge(100) Interface: A Surface Passivation Method for Gate Dielectric Growth." 2006, Presented at European Materials Research Society Spring Meeting,
  • "Theoretical Analysis of the Interface Between Zr(Hf)O2 and Ge(100) for Ge-based MOSFET Devices." 2005, Presented at 52nd AVS Annual International Symposium,
  • "STM, STS, and DFT Studies of the SiO/Ge(100) Interface: A Surface Passivation Method for Gate Dielectric Growth." 2006, Presented at 33rd Conference on the Physics and Chemistry of Semiconductor Interfaces,
  • "STM, STS, and DFT Studies of the SiO/Ge(100) Interface: A Surface Passivation Method for Gate Dielectric Growth." 2005, Presented at 52nd AVS Annual International Symposium,
  • "STM, STS, and DFT Studies of the SiO/Ge(100) Interface: A Surface Passivation Method for Gate Dielectric Growth." 2005, Presented at Semiconductor Research Corporation TECHCON,
  • "STM, STS, and DFT Studies of SiO Deposition on the Ge(001)-2×1 Surface." 2005, Presented at 32nd Conference on the Physics and Chemistry of Semiconductor Interfaces,
  • "STM, STS, and DFT Studies of SiO Deposition on the Ge(100) Surface." 2004, Presented at 51st AVS Annual International Symposium,
  • "Dynamics of Cl2 Adsorption on and AlCl3 Desorption from Al(111)." 2004, Presented at Donostia International Physics Center Workshop,
  • "STM, STS, and DFT Studies of SiO Deposition on the Ge(001)-p(2×1) Surface." 2004, Presented at 31st Conference on the Physics and Chemistry of Semiconductor Interfaces,
  • "Ultra-Low Coverage Spontaneous Etching and Hyperthermal Desorption of Aluminum Chlorides from Cl2/Al(111)." 2003, Presented at 50th AVS Annual International Symposium,
  • "Ultra-Low Coverage Spontaneous Etching and Hyperthermal Desorption of Aluminum Chlorides from Cl2/Al(111)." 2003, Presented at Gordon Research Conference on Dynamics at Surfaces,
  • "Investigation of AlSb(001)/Oxide Interfaces via Density Functional Theory." 2003, Presented at 30th Conference on the Physics and Chemistry of Semiconductor Interfaces,

Papers in Proceedings

2017

  • Deitz, J.I.; Paul, P.K.; Karki, S.; Marsillac, S. et al. "Detecting Sub Bandgap Energies in CIGS with Electron Energy-Loss Spectroscopy." (7 2017).

2016

  • Deitz, J.I.; McComb, D.W.; Grassman, T.J. "Probing the electronic structure at the heterovalent GaP/Si interface using electron energy-loss spectroscopy." in 43th IEEE Photovoltaic Specialists Conference. (11 2016).
  • Chmielewski, D.J.; Galiano, K.; Paul, P.; Cardwell, D. et al. "Comparative Study of 2.05 eV AlGaInP and Metamorphic GaInP Materials and Solar Cells Grown by MBE and MOCVD." in 43rd IEEE Photovoltaic Specialists Conference (PVSC). (1 2016).
  • Deitz, J.I.; McComb, D.W.; Grassman, T.J. "Advancement of Heteroepitaxial III-V/Si Thin Films through Defect Characterization." (7 2016).
  • Grassman, T.J.; Chmielewski, D.J.; Carlin, J.A.; Ringel, S.A. "Development of Epitaxial 2-and 3-Junction III-V/Si Solar Cells." in 43rd IEEE Photovoltaic Specialists Conference (PVSC). (1 2016).
  • Paul, P.K.; Aryal, K.; Marsillac, S.; Grassman, T.J. et al. "Identifying the source of reduced performance in 1-stage-grown Cu(In,Ga)Se-2 solar cells." in 43rd IEEE Photovoltaic Specialists Conference (PVSC). (1 2016).
  • Grassman, T.J.; Carlin, J.A.; Carnevale, S.D.; Al Mansouri, I. et al. Progress toward a Si-plus architecture: Epitaxially-integrable Si sub-cells for III-V/Si multijunction photovoltaics. in 40th IEEE Photovoltaic Specialists Conference. https://dx.doi.org/10.1109/PVSC-Vol2.2014.7588253, (10 2016).
  • Deitz, J.I.; Grassman, T.J.; McComb, D.W. "Accessing High Spatial Resolution Low-Loss EELS Information without Cerenkov Radiation." (7 2016).
  • Grassman, T.J.; Chmielewski, D.J.; Carlin, J.A.; Ringel, S.A. Development of epitaxial 2- and 3-junction III-V/Si solar cells. in 43rd IEEE Photovoltaic Specialists Conference. https://dx.doi.org/10.1109/pvsc.2016.7749986, (11 2016).

2015

  • Paul, P.K.; Cardwell, D.W.; Jackson, C.M.; Galiano, K. et al. "Direct nm-scale spatial mapping of traps in CIGS." in IEEE 42nd Photovoltaic Specialist Conference (PVSC). (1 2015).
  • Deitz, J.I.; Carnevale, S.D.; Ringel, S.A.; McComb, D.W. et al. "Extending Characterization Applications of Electron Channeling Contrast Imaging." in IEEE 42nd Photovoltaic Specialist Conference (PVSC). (1 2015).
  • Grassman, T.J.; Chmielewski, D.J.; Carnevale, S.D.; Carlin, J.A. et al. "GaAsP/Si Dual-Junction Solar Cells Grown by MBE and MOCVD." in IEEE 42nd Photovoltaic Specialist Conference (PVSC). (1 2015).
  • Garcia-Tabares, E.; Grassman, T.J.; Martin, D.; Carlin, J. et al. "Evolution of the Silicon Bottom Cell Photovoltaic Behavior during III-V on Si Multi-junction Solar Cells Production." in IEEE 42nd Photovoltaic Specialist Conference (PVSC). (1 2015).
  • Chmielewski, D.J.; Carnevale, S.; Grassman, T.J.; Carlin, J.A. et al. "High-Performance Metamorphic Tunnel Junctions for III-V/Si Multijunction Solar Cells." in IEEE 42nd Photovoltaic Specialist Conference (PVSC). (1 2015).
  • Cardwell, D.W.; Vaughn, N.; Paul, P.; Ratcliff, C. et al. "Investigations of Metamorphic (Al)GaInP for III-V Multijunction Photovoltaics." in IEEE 42nd Photovoltaic Specialist Conference (PVSC). (1 2015).

2014

  • Ratcliff, C.; Grassman, T.J.; Carlin, J.A.; Chmielewski, D.J. et al. "Ga-rich GaxIn1-xP solar cells on Si with 1.95 eV bandgap for ideal III-V/Si photovoltaics." in Conference on Physics, Simulation, and Photonic Engineering of Photovoltaic Devices III. (1 2014).
  • Carnevale, S.D.; Deitz, J.I.; Carlin, J.A.; Picard, Y.N. et al. "Rapid Characterization of Extended Defects in III-V/Si by Electron Channeling Contrast Imaging." in 40th IEEE Photovoltaic Specialists Conference (PVSC). (1 2014).
  • Deitz, J.; Carnevale, S.; De Graef, M.; Picard, Y.N. et al. "Using electron channeling contrast imaging for misfit dislocation characterization in heteroepitaxial III-V/Si thin films." (1 2014).

2013

  • Haas, A.; Sharps, P.; Aiken, D.; Grassman, T. et al. "Analysis of Short- and Long-Term Performance Goals for III/V on Active Si Concentrator Solar Cells." in 39th IEEE Photovoltaic Specialists Conference (PVSC). (1 2013).
  • M.A. Green, X. Hao, S. Bremner, G. J. Conibeer, I. Al Mansouri, N. Song, Z. Liu, S. A. Ringel, J. A. Carlin, T. J. Grassman, B. Galiana, A. M. Carlin, C. Ratcliff, D. Chmielewski, L. Yang, M. J. Mills, G. Teeter, M. Young "Silicon Wafer-Based Tandem Cells: The Ultimate Photovoltaic Solution?." in 28th European Photovoltaic Solar Energy Conference. (6 2013).
  • Chmielewski, D.J.; Grassman, T.J.; Carlin, A.M.; Carlin, J. et al. "Metamorphic Tunnel Junctions for High Efficiency III-V/IV Multi-Junction Solar Cell Technology." in 39th IEEE Photovoltaic Specialists Conference (PVSC). (1 2013).
  • Grassman, T.J.; Shah, D.B.; Carlin, J.A.; Ringel, S.A. "Exploration of Epitaxial Quantum Dots within Wide Band Gap Metamorphic Host Materials for Intermediate Band Solar Cells." in 39th IEEE Photovoltaic Specialists Conference (PVSC). (1 2013).
  • Grassman, T.J.; Carlin, J.A.; Ratcliff, C.; Chmielewski, D.J. et al. "Epitaxially-Grown Metamorphic GaAsP/Si Dual-Junction Solar Cells." in 39th IEEE Photovoltaic Specialists Conference (PVSC). (1 2013).
  • Ringel, S.A.; Carlin, J.A.; Grassman, T.J.; Galiana, B. et al. "Ideal GaP/Si Heterostructures Grown by MOCVD: III-V/Active-Si Subcells, Multijuntions, and MBE-to-MOCVD III-V/Si Interface Science." in 39th IEEE Photovoltaic Specialists Conference (PVSC). (1 2013).
  • Al Mansouri, I.; Bremner, S.; Ho-Baillie, A.; Mehrvarz, H. et al. "Design of Bottom Silicon Solar Cell for Multijunction Devices." in 39th IEEE Photovoltaic Specialists Conference (PVSC). (1 2013).

2012

  • Carlin, A.M.; Grassman, T.J.; Brenner, M.R.; Grandal, J. et al. "Lattice-Matched GaP/SiGe Virtual Substrates for Low-Dislocation Density GaInP/GaAsP/Si Solar Cells." in 38th IEEE Photovoltaic Specialists Conference (PVSC). (1 2012).
  • Grassman, T.J.; Carlin, A.M.; Grandal, J.; Ratcliff, C. et al. "Spectrum-optimized Si-based III-V multijunction photovoltaics." in Conference on Physics, Simulation and Photonic Engineering of Photovoltaic Devices. (1 2012).
  • Swaminathan, K.; Grassman, T.J.; Yang, L-M.; Chmielewski, D. et al. "Impact of threading dislocation density on metamorphic InxGa1-xAs and InzGa1-zP p-i-n photodetectors on GaAs." in Conference on Optical Components and Materials IX. (1 2012).
  • Grassman, T.J.; Ratcliff, C.; Carlin, A.M.; Carlin, J.A. et al. "III-V/GaP Epitaxy on Si for Advanced Photovoltaics and Green Light Emitters." in 5th SiGe, Ge, and Related Compounds - Materials, Processing and Devices Symposium held at the 220th Meeting of the Electrochemical-Society (ECS). (1 2012).
  • Grandal, J.; Grassman, T.J.; Carlin, A.M.; Brenner, M.R. et al. "Growth and characterization of InGaAs quantum dots on metamorphic GaAsP templates by molecular beam epitaxy." in 38th IEEE Photovoltaic Specialists Conference (PVSC). (1 2012).

2011

  • Yang, L-M.; Swaminathan, K.; Grassman, T.; Ringel, S. et al. "Threading Dislocations in Metamorphic In0.20Ga0.80As Grown on GaAs Substrates." (7 2011).
  • Grassman, T.J.; Carlin, A.M.; Swaminathan, K.; Ratcliff, C. et al. "Expanding the palette: Metamorphic strategies over multiple lattice constant ranges for extending the spectrum of accessible photovoltaic materials." (12 2011).

2010

2007

  • Winn, D.L.; Grassman, T.J.; Kummel, A.C. "Electronic properties of adsorbates on in0.37Ga 0.63As(001)-(2×4)." (12 2007).

2005

  • Kummel, A.C.; Grassman, T.; Winn, D.L.; Hale, M.J. et al. "Influence of atomic structure on electronic structure for oxide-semiconductor interfaces.." in 229th National Meeting of the American-Chemical-Society. (3 2005).

2004

  • Miller, K.A.; Toal, S.J.; Bodde, S.G.; Sexton, J.Z. et al. "Metallophthalocyanine based chemical sensors for chemical warfare agents.." in 227th National Meeting of the American-Chemical Society. (3 2004).