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You searched on: Topic Area: Semiconductor Materials Sorted by: date

Displaying records 11 to 20 of 46 records.
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11. Degradation of photovoltaic devices at high concentration by space charge limited currents
Topic: Semiconductor Materials
Published: 10/1/2013
Authors: Ari D Feldman, Richard K. Ahrenkiel, John H Lehman
Abstract: High-injection mobility reduction is examined by theory, modeling, and experimental data acquired by resonance coupled photoconductive decay (RCPCD). The ambipolar mobility is shown to reduce to zero when the constituent injection-dependent carr ...

12. X-Ray Micro-Beam Diffraction Determination of Full Stress Tensors in Cu TSVs
Topic: Semiconductor Materials
Published: 5/28/2013
Authors: Chukwudi Azubuike Okoro, Lyle E Levine, Oleg A Kirillov, Yaw S Obeng, Ruqing Xu, Jonathan Z Tischler, Wenjun Liu, Klaus Hummler
Abstract: We report the first non-destructive, depth resolved determination of the full stress tensor in Cu through-silicon vias (TSVs), using synchrotron based micro-beam X-ray diffraction. Two adjacent Cu TSVs were studied; one deliberately capped with SiO2, ...

13. Studies of photoconductivity and FET behavior in examining drift mobility, surface depletion, and transient effects in Si-doped GaN nanowires examined in vacuum and air
Topic: Semiconductor Materials
Published: 5/3/2013
Authors: Norman A Sanford, Lawrence H Robins, Paul T Blanchard, K. Soria, B. Klein, Kristine A Bertness, John B. Schlager, Aric Warner Sanders
Abstract: Variable intensity photoconductivity (PC) performed under vacuum at 325 nm was used to estimate drift mobility and negative surface charge density sigma for c-axis oriented Si-doped GaN nanowires (NWs). In this approach we assumed that sigma was res ...

14. Thermo-Mechanical Characterization of Au‹In Transient Liquid Phase Bonding Die-Attach
Topic: Semiconductor Materials
Published: 4/9/2013
Authors: Brian Joseph Grummel, Habib A Mustain, Z. John Shen, Allen R Hefner Jr.
Abstract: In next-generation wide-bandgap power electronics, the semiconductor device die-attach is of critical importance, for this transient liquid phase (TLP) bonding is a promising and effective die-attach technique. In this work, the thermal and mechanica ...

15. Integrating carbon nanotubes as vias in a monolithic 3DIC process
Topic: Semiconductor Materials
Published: 3/21/2013
Authors: Ann Chiaramonti Chiaramonti Debay, Sten Vollebregt, R. Ishihara, Johan van der Cingel , Kees Beenakker

16. Transient mobility in silicon as seen by a combination of free-carrier absorption and resonance-coupled photoconductive decay
Topic: Semiconductor Materials
Published: 3/12/2013
Authors: Ari D Feldman, John H Lehman, Richard K. Ahrenkiel
Abstract: The combination of the resonance-coupled photoconductive decay (RCPCD) apparatus and a pump-probe free carrier absorption experiment results in a method of viewing transient mobility. RCPCD uses an Nd:YAG laser operating at 1064 nm to pump the p-ty ...

17. Towards Discrete Axial p-n Junction Nanowire LEDs Grown by Plasma-Assisted MBE
Topic: Semiconductor Materials
Published: 3/6/2013
Author: Matthew David Brubaker
Abstract: In this paper we investigate axial p-n junction GaN nanowires grown by plasma-assisted MBE, with particular attention to the effect of Mg doping on the device characteristics of individual nanowire LEDs. We observe that single-nanowire LEDs produce ...

18. Gallium Nitride Nanowires for On-Chip Optical Interconnects on Ex-Situ Substrates
Topic: Semiconductor Materials
Published: 1/16/2013
Authors: Matthew David Brubaker, Paul T Blanchard, John B. Schlager, Aric Warner Sanders, Alexana Roshko, Shannon M.M. Duff, Jason Gray, Victor M. Bright, Norman A Sanford, Kristine A Bertness
Abstract: In this letter we report on the fabrication, device characteristics, and optical coupling of a two-nanowire device comprising light-emitting diode and photoconductive GaN nanowires. Axial p-n junction GaN nanowires were grown by molecular beam epita ...

19. Vertically Segregated Structure and Properties of small molecule-polymer blend semiconductors for organic thin film transistors
Topic: Semiconductor Materials
Published: 8/27/2012
Authors: Nayool Shin, Dean M DeLongchamp, Jihoon Kang, Regis J Kline, Lee J Richter, Vivek M Prabhu, Balaji Purushothamanc, John E Anthony, Do Y Yoon
Abstract: The phase-segregated structure and the electrical properties of thin film blends of the small-molecule semiconductor fluorinated 5,11-bis(triethylsilylethynyl) anthradithiophene with insulating binder polymers were studied for organic thin film trans ...

20. Microwave measurements and systematic circuit-model extraction of nanowire metal semiconductor field-effect transistors
Topic: Semiconductor Materials
Published: 8/24/2012
Authors: Dazhen Gu, Thomas M Wallis, Pavel Kabos, Paul T Blanchard, Kristine A Bertness, Norman A Sanford
Abstract: We present detailed on-wafer scattering parameter measurements and equivalent circuit modeling of metal semiconductor field effect transistor (MESFET) that incorporates a GaN nanowire (NW). A systematic procedure is established to extract intrinsic m ...

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