TITLE

Comparison of the electronic properties of sublimation- and vapor-Bridgman-grown crystals of tetracene

AUTHOR(S)
Niemax, J.; Tripathi, A. K.; Pflaum, J.
PUB. DATE
March 2005
SOURCE
Applied Physics Letters;3/21/2005, Vol. 86 Issue 12, p122105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The hole mobilities in a vapor-Bridgman-grown crystal and in sublimation-grown crystals of tetracene were measured along the c*-direction in a temperature range from 300 to 450 K by the time-of-flight method. The mobility was found to increase as a function of temperature in the vapor-Bridgman-grown crystal, indicating that the transport was thermally activated. After reaching its maximum of about 1 cm2/V s at 320 K, the mobility in the sublimation-grown crystals decreased with temperature in accordance with band transport models. Gas chromatography measurements indicated that the difference in the electronic transport properties could be related to a higher concentration of chemical impurities in the vapor-Bridgman crystal.
ACCESSION #
16581723

 

Related Articles

  • Thermal and kinetic evaluation of cotton oil biodiesel. Souza, A. G.; Danta, H. J.; Silva, M. C. D.; Santos, I. M. G.; Fernandes Jr., V. J.; Sinfr�nio, F. S. M.; Teixeira, L. S. G.; Nov�k, Cs. // Journal of Thermal Analysis & Calorimetry;Dec2007, Vol. 90 Issue 3, p945 

    The biodiesel obtained by transesterification by reaction between ester and an alcohol in the presence of catalyst. The purpose of this work is to evaluate the thermal and kinetic behavior of the methanol biodiesel derived from cotton oil. The quality analysis was done by gas chromatography and...

  • Gas chromatography on carbon adsorbents: Characterization, systematization, and practical applications to catalytic studies. Zheivot, V. I. // Journal of Analytical Chemistry;Sep2006, Vol. 61 Issue 9, p832 

    The results of the characterization of graphite-like carbon materials by X-ray diffraction, electron microscopy, and adsorption and gas chromatography are discussed. All carbon-containing adsorbents are systematized in accordance with their structure and adsorption characteristics, chemical...

  • Simultaneous determination of residual polychlorinated biphenyls and organochlorine pesticides in fish and fish products by gas-liquid chromatography. Barkatina, E.; Zastenskaya, I.; Shulyakovskaya, O.; Pertsovskii, A.; Bunevich, N.; Fedorova, T. // Journal of Analytical Chemistry;Sep2007, Vol. 62 Issue 9, p868 

    A procedure is developed for the simultaneous determination of polychlorinated biphenyls and organochlorine pesticides in fish and fish products by gas-liquid chromatography with an electron capture detector on a capillary column DB-1701 (30 m × 0.25 mm × 0.25 μm) under...

  • Processing and purity assessment of standards for the analysis of type-B trichothecene mycotoxins. Krska, R.; Schothorst, R. C.; Van Egmond, H. P.; Josephs, R. D.; Lepschy, J.; Pettersson, H.; Chan, D.; Berthiller, F.; Schuhmacher, R.; Kandler, W.; Parich, A.; Welzig, E. // Analytical & Bioanalytical Chemistry;Aug2005, Vol. 382 Issue 8, p1848 

    The lack of reliable, certified calibrant solutions for the Fusarium mycotoxins deoxynivalenol (DON), 3-acetyl-DON (3-Ac-DON), 15-acetyl-DON (15-Ac-DON) and nivalenol (NIV) is a serious drawback in the already problematic area of trichothecene analysis. For this reason, purified DON, 3-Ac-DON,...

  • What's in a Method? Hinshaw, John V. // LC-GC Asia Pacific;Jun2005, Vol. 8 Issue 2, p18 

    Presents information on chromatography method. Description of chromatography method; Parts of chromatography method; Types of chromatography method.

  • Chemiluminescence Chromatography Detectors.  // Journal of AOAC International;Jan/Feb2004, Vol. 87 Issue 1, p20A 

    Describes the gas chromatography and liquid chromatography detectors based on chemiluminescence (CL). Brief description of some CL detectors that are currently available commercially; Uses of flame photometric detector; Advantages of pulsed flame photometric gas chromatography detector.

  • Potentials of gas chromatography in the determination of reaction products in the catalytic oxidation of ammonia to nitrogen(II) oxide. Zheivot, V. I.; Nikoro, T. A.; Krivoruchko, V. N.; Panina, L. I.; Pinaeva, L. G.; Isupova, L. A. // Journal of Analytical Chemistry;Dec2007, Vol. 62 Issue 12, p1170 

    Peculiarities of the determination of nitrogen oxides and ammonia in the reaction products of ammonia oxidation are studied by gas chromatography. Particular attention was paid to the sampling problem. It is shown that in the course of the transportation of samples containing nitrogen(II) oxide...

  • More Speed, Better Precision, Higher Sensitivity: Why Buy a New Gas Chromatograph? Ettre, Leslie S.; Engewald, Werner // LC-GC North America;May2004, Vol. 22 Issue 5, p452 

    Discusses the improvement in gas chromatography (GC) instrumentation, columns, and techniques. Major trends in GC; Determination of the small amounts of compounds present in an excess of large matrices; Means of enhancing the possibilities of trace analysis.

  • Gas Chromatographic Determination of Traces of O-Isobutyl S-2-(N,N-Diethylamino)ethyl Methyl Phosphonothioate (VX-Like Compound) in Working Area and Community Air. Stan'kov, I. N.; Sergeeva, A. A.; Sitnikov, V. B.; Derevyagina, I. D.; Morozova, O. T.; Mylova, S. N. // Journal of Analytical Chemistry;Nov2004, Vol. 59 Issue 11, p1079 

    A gas-chromatographic procedure is proposed for the determination of O-isobutyl S-2-(N,N-diethylamino)ethyl methyl phosphonothioate (mixed ester) at the maximum permissible level for the working area air (5 × 10–6 mg/m3) and at the safe reference level of impact for the community air...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics