Instrumentation for the in situ control of carrier recombination characteristics during irradiation by protons

Gaubas, E.; Uleckas, A.; Vaitkus, J.; Raisanen, J.; Tikkanen, P.
May 2010
Review of Scientific Instruments;May2010, Vol. 81 Issue 5, p053303
Academic Journal
Instrument and methods for the remote and in situ control of carrier recombination parameters during irradiation by protons of energy in the range of 3–8 MeV are presented. Direct techniques for measurements and separation of carrier recombination and trapping/generation characteristics based on the analysis of microwave probed photoconductivity transients during exposure on protons of different energies and irradiations at different temperatures are described. Simultaneously, a spectroscopy of activation energy of dominant traps has been performed before and just after irradiation by temperature scans of variation in the recombination parameters.


Related Articles

  • Conduction mechanisms in ion-irradiated InGaAs layers. Joulaud, L.; Mangeney, J.; Chimot, N.; Crozat, P.; Fishman, G.; Bourgoin, J. C. // Journal of Applied Physics;3/15/2005, Vol. 97 Issue 6, p063515 

    The electrical and optical properties of H+- and Au+-irradiated InGaAs layers were studied using Hall-effect, van der Pauw, and relaxation-time measurements. Comparing the different results allows us to obtain information on the nature of the defects created by these two irradiations. Proton...

  • Photoconductivity of Compositions Based on Polystyrene in the Near IR Region of the Spectrum. Davidenko, N. A.; Ishchenko, A. A.; Neiland, O. Ya. // Theoretical & Experimental Chemistry;May/Jun2003, Vol. 39 Issue 3, p152 

    The photoconductivity characteristics of films of polymeric compositions based on polystyrene and containing substituted tetrathiafulvalenes (electron donors 2,4,5,7-tetranitro-9-fluorenone, electron acceptors cationic and neutral polymethine dyes) were studied in the spectral region from 400 to...

  • Specific features of photoconductivity spectra of the CdTe/CdHgTe epitaxial graded-gap heterostructures. Vlasenko, A.I.; Vlasenko, Z.K // Semiconductors;Jan2006, Vol. 40 Issue 1, p50 

    Based on studies the structural and photoelectric properties of CdTe/CdHgTe graded-gap heterostructures, it is found that the metallurgical interface between the materials, which is located in the structure bulk, is enriched with structural defects. An increased recombination rate is...

  • Photoabsorption and photoconductivity in C60 layers. Kanev, St.; Nenova, Z.; Koprinarov, N. // Semiconductor Physics, Quantum Electronics & Optoelectronics;2006, Vol. 9 Issue 4, p21 

    A complex investigation of the photoconductivity of fullerene films, prepared by thermal evaporation in vacuum, was carried out. The investigated films contain predominantly C60 in various phases as shown elsewhere. The multiple photocurrent spectra analysis (MPSA method) has been used in the...

  • Experimental study on far-infrared photoconductivity and magnetoresistance in InAs single quantum wire. Zehnder, C.; Löhr, S.; Wirthmann, A.; Gui, Y. S.; Heyn, Ch.; Hansen, W.; Heitmann, D.; Hu, C.-M. // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p829 

    By applying far-infrared photoconductivity spectroscopy, we detect for the first time spectrally resolved the dynamic excitation in a single InAs quantum wire, which allows us to determine its confinement energy. © 2005 American Institute of Physics

  • Conductivity and photoconductivity in undoped ZnSe nanowire array. Philipose, U.; Ruda, H. E.; Shik, A.; de Souza, C. F.; Sun, P. // Journal of Applied Physics;3/15/2006, Vol. 99 Issue 6, p066106 

    Arrays of free-standing ZnSe nanowires with the length of 8–10 μm and diameters of 80–150 nm were fabricated by Au-catalyzed vapor-liquid-solid growth. Current-voltage characteristics of the arrays over the temperature interval of 90–400 K showed a superlinear character....

  • Holographic recording media based on polymer compositions with Fe2O3, ZnO, and CdS nanoparticles. Davidenko, N.; Get’manchuk, Yu.; Itskovskaya, I.; Mokrinskaya, E.; Pavlov, V.; Chuprina, N. // Journal of Applied Spectroscopy;Nov2005, Vol. 72 Issue 6, p893 

    We investigated the influence of additions of Fe2O3, ZnO, and CdS nanoparticles in films of holographic recording media based on photosemiconductors (oligomers and co-oligomers of glycidyl carbazole) and a dielectric (copolymer of styrol with octylmethacrylate) that contain an organic compound...

  • Ultrafast conductivity dynamics in pentacene probed using terahertz spectroscopy. Thorsmølle, V.K.; Averitt, R.D.; Chi, X.; Hilton, D.J.; Smith, D.L.; Ramirez, A.P.; Taylor, A.J. // Applied Physics Letters;2/9/2004, Vol. 84 Issue 6, p891 

    We present measurements of the transient photoconductivity in pentacene single crystals using optical-pump terahertz-probe spectroscopy. We have measured the temperature and fluence dependence of the mobility of the photoexcited charge carriers with picosecond resolution. The pentacene crystals...

  • Ground-state measurement of Pr3+ in Y2O3 by photoconductivity. Dongdong Jia; Xiao-Jun Wang; Yen, W. M. // Physics of the Solid State;Sep2008, Vol. 50 Issue 9, p1674 

    1 at % Pr3+-doped Y2O3 single-crystal fibers were prepared using a laser-heated pedestal growth method. The emission and excitation spectra of the fibers were measured. The emissions of 4 f-4 f transitions from 1 D 2 to the 3 H 4 and 3 H 5 states are found at 620 and 720 nm, respectively. The 3...


Read the Article


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

Try another library?
Sign out of this library

Other Topics