TITLE

Studies of silicon dihydride and its potential role in light-induced metastability in hydrogenated amorphous silicon

AUTHOR(S)
Abtew, T. A.; Drabold, D. A.; Taylor, P. C.
PUB. DATE
June 2005
SOURCE
Applied Physics Letters;6/13/2005, Vol. 86 Issue 24, p241916
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Recent nuclear magnetic resonance experiments on protons in hydrogenated amorphous silicon (a-Si:H) by T. Su, P. C. Taylor, G. Ganguly, and D. E. Carlson [Phys. Rev. Lett. 89, 015502 (2002)] have shown that light exposure leads to structures involving two protons separated by 2.3±0.2 Å. In this report, using supercell models of a-Si:H, we show that SiH2 configurations in the solid state are consistent with these observations. We find an average proton distance of 2.39 Å for SiH2 structures considered for four different configurations. We also find that the details of basis set and density functional are important for accurately representing these structures.
ACCESSION #
17452663

 

Related Articles

  • Transport of Protons in Amorphous Hydrogenated Carbon. Ivanov-Omskiı, V. I.; Yastrebov, S. G. // Semiconductors;Aug2005, Vol. 39 Issue 8, p941 

    The effect of copper on broadening of the band of infrared-radiation absorption is observed in the region of extension of the OH...O stretching modes (∼3100–3700 cm–1) in amorphous carbon modified by copper. It is shown that this broadening of the absorption band, accompanied...

  • A high voltage computer controlled experimental system for the investigation of amorphous semiconductors as image sensors. Vaezi-Nejad, S.M.; Jenner, R.P. // Transactions of the Institute of Measurement & Control;2002, Vol. 24 Issue 4, p303 

    This paper describes an ongoing programme of work designed to investigate dark discharge and photoconductivity in amorphous semiconductors with a view to applying these materials to industrial optical process tomography (OPT). Extensive laboratory equipment has been developed to investigate the...

  • Ohmic Contact To Amorphous Carbon Thin Films. Mohamad, F.; Noor, U. M.; Rusop, M. // AIP Conference Proceedings;6/1/2009, Vol. 1136 Issue 1, p611 

    Amorphous carbon (a-C) thin films have been deposited on silicon substrates at different deposition temperatures ranging from 700° C–800° C. The objective of this work is to investigate several electrical contacts on a-C thin films and to find the suitable method to fabricate ohmic...

  • The origin of (001) texture evolution in FePt thin films on amorphous substrates. Jae-Song Kim; Yang-Mo Koo; Byeong-Joo Lee; Seong-Rae Lee // Journal of Applied Physics;3/1/2006, Vol. 99 Issue 5, p053906 

    A theoretical study has been performed to rationalize the strong evolution of (001) texture during postannealing of deposited Fe50Pt50 thin films on amorphous substrates, by comparing calculated strain energies of several crystals with different orientations under presumed strain conditions. An...

  • Interfacial and annealing effects on magnetic properties of CoFeB thin films. Yung-Hung Wang; Wei-Chuan Chen; Shan-Yi Yang; Kuei-Hung Shen; Chando Park; Ming-Jer Kao; Ming-Jinn Tsai // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08M307 

    The interfacial and annealing effects on magnetic properties of CoFeB thin films with Ta and Ru interfaces were investigated. It is found that the thickness of magnetically dead layer of as-deposited CoFeB film strongly depends on the interfaces. After annealing above 150 °C boron atoms seem...

  • Isotropic proton-detected local-field nuclear magnetic resonance in solids. Havlin, Robert H.; Walls, Jamie D.; Pines, Alexander // Journal of Chemical Physics;2/15/2005, Vol. 122 Issue 7, p074507 

    A nuclear magnetic resonance method is presented which produces linear, isotropic proton-detected local-field spectra for INS spin systems in powdered samples. The method, heteronuclear isotropic evolution (HETIE), refocuses the anisotropic portion of the heteronuclear dipolar coupling...

  • Hydrogen atom formation from the photodissociation of water ice at 193 nm. Yabushita, Akihiro; Hashikawa, Yuichi; Ikeda, Atsushi; Kawasaki, Masahiro; Tachikawa, Hiroto // Journal of Chemical Physics;3/15/2004, Vol. 120 Issue 11, p5463 

    The TOF spectra of photofragment hydrogen atoms from the 193 nm photodissociation of amorphous ice at 90–140 K have been measured. The spectra consist of both a fast and a slow components that are characterized by average translational energies of 2k[sub B]T[sub trans]=0.39±0.04 eV...

  • Structures and phonon properties of nanoscale fractional graphitic structures in amorphous carbon determined by molecular simulations. Kumagai, Tomohisa; Choi, Junho; Izumi, Satoshi; Kato, Takahisa // Journal of Applied Physics;Jun2010, Vol. 107 Issue 10, p104307 

    Although amorphous carbon (a-C) materials are being widely used, relaxed atomic structures of a-C have not yet been investigated in detail. In this study, a-C structures were relaxed in molecular simulations, and their structural properties and phonon properties were investigated. As a result,...

  • Retrieval of some parameters of an amorphous chalcogenide semiconductor from the temperature and field dependences of its conductivity. Kozyukhin, S. A.; Voronkov, E. N. // Inorganic Materials;Oct2008, Vol. 44 Issue 11, p1190 

    We study the conductivity of amorphous chalcogenide films used in phase-change-memory (PCM) devices which are based on the effect of reversible switching of a semiconductor from the high-(amorphous) to the low-resistivity (crystalline) state under the external electrical actions. Temperature and...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics