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Topic Area: Semiconductor Materials
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Displaying records 11 to 20 of 71 records.
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11. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911884

12. Gallium Nitride Nanowires for On-Chip Optical Interconnects on Ex-Situ Substrates
Topic: Semiconductor Materials
Published: 1/16/2013
Authors: Matthew David Brubaker, Paul Timothy Blanchard, John B Schlager, Aric Warner Sanders, Alexana Roshko, Shannon Marie Madison 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912280

13. Super-resolution Optical Measurement of Nanoscale Photoacid Distribution in Lithographic Materials
Topic: Semiconductor Materials
Published: 10/26/2012
Authors: Adam J. Berro, Andrew J. Berglund, Peter T. (Peter T) Carmichael, Jong Seung Kim, James Alexander Liddle
Abstract: Chemically amplified resists are the principal lithographic materials used in the semiconductor industry. The photoacid distribution generated upon exposure and its subsequent evolution during post-exposure bake is one of the most important factors ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909231

14. Observation of spin-valve effect in Alq3 using a low work function metal
Topic: Semiconductor Materials
Published: 9/7/2012
Authors: Hyuk-Jae Jang, Kurt Pernstich, David J Gundlach, Oana Jurchescu, Curt A Richter
Abstract: We present the observation of magnetoresistance in Co/Ca/Alq3/Ca/NiFe spin-valve devices. Thin Ca layers contacting 150 nm thick Alq3 enable the injection of spin-polarized electrons into Alq3 due to engineering of the band alignment. The devices ex ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911326

15. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906842

16. Microstructure evolution and development of annealed Ni/Au contacts to GaN nanowires
Topic: Semiconductor Materials
Published: 8/21/2012
Authors: Andrew M. Herrero, Paul Timothy Blanchard, Aric Warner Sanders, Matthew David Brubaker, Norman A Sanford, Alexana Roshko, Kristine A Bertness
Abstract: The development of Ni/Au contacts to Mg-doped GaN nanowires (NWs) is examined. Current-voltage (I-V) measurements of these Mg-doped nanowire devices frequently exhibit a strong degradation after annealing in N^d2^/O^d2^. This degradation originates f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908853

17. Tin Oxide Nanowire Sensor with Integrated Temperature and Gate Control for Multi-Gas Recognition
Topic: Semiconductor Materials
Published: 3/7/2012
Authors: Eric N. (Eric) Dattoli, Albert Davydov, Kurt D Benkstein
Abstract: The selectivity of a chemiresistive gas sensor comprising an aligned array of single-crystalline tin oxide nanowires (NWs) is shown to be greatly enhanced by combined temperature and gate voltage modulation. This dual modulation was effected by utili ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909477

18. Tunnel FET Heterojunction Band Alignment by Internal Photoemission Spectroscopy
Topic: Semiconductor Materials
Published: 3/6/2012
Authors: Qin Q. Zhang, Guangle Zhou, Huili G. Xing, Alan C. Seabaugh, Kun Xu, Sio Hong, Oleg A Kirillov, Curt A Richter, Nhan V Nguyen
Abstract: The electron energy band alignment of a metal-oxide-semiconductor tunnel field-effect transistor (TFET) heterojunction, W/Al2O3/InGaAs/InAs/InP is determined by internal photoemission spectroscopy. At the oxide flat-band condition, the barrier height ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909643

19. In situ observation of the indentation-induced phase transformation of silicon thin films
Topic: Semiconductor Materials
Published: 3/5/2012
Authors: Yvonne Beatrice Gerbig, Chris A Michaels, Aaron M Forster, Robert Francis Cook
Abstract: Indentation-induced phase transformation processes were studied by in situ Raman microspectroscopy of the deformed contact region of silicon on sapphire samples during contact loading and unloading. During loading, the formation of Si-II and another ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910047

20. In situ electrochemical small-angle neutron scattering (eSANS) for quantitative structure and redox properties of nanoparticles
Topic: Semiconductor Materials
Published: 2/16/2012
Authors: Vivek M Prabhu, Vytautas Reipa
Abstract: Rapid growth in nanomaterial applications highlight limitations of available physicochemical characterization methods. An in situ electrochemical small-angle neutron scattering (eSANS) meth-odology was devised that enables direct measurements of nano ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909405



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