Modeling of steady-state field distributions in blocked impurity band detectors

Haegel, N. M.; Haegel, N.M.; Jacobs, J. E.; Jacobs, J.E.; White, A. M.; White, A.M.
December 2000
Applied Physics Letters;12/25/2000, Vol. 77 Issue 26
Academic Journal
Steady-state electric field and carrier distributions are calculated for blocked impurity band (BIB) detectors in the absence of external illumination. The results illustrate the role of space charge in the blocking layer. Calculations are presented for Ge:Ga, though the input is easily modified for other materials. The numerical model allows for observation of the effect of spatial doping variations and interface gradients. The BIB field distribution is highly dependent on the purity and compensation in the blocking layer, as well as interface sharpness. In some cases, space charge effects can cause a collapse of the field at the blocker/absorber interface or the contact and resultant low field regions in the blocking layer. © 2000 American Institute of Physics.


Related Articles

  • Space charge limited avalanche growth in multigap resistive plate chambers. Akindinov, A. N.; Alici, A.; Anselmo, F.; Antonioli, P.; Baek, Y.; Basile, M.; Romeo, G. Cara; Cifarelli, L.; Cindolo, F.; Cosenza, F.; Caro, A. de; Pasquale, S. de; Bartolomeo, A. Di; Girard, M. Fusco; Guida, M.; Hatzifotiadou, D.; Kaidalov, A. B.; Kim, D. W.; Kim, D. H.; Kisselev, S. M. // European Physical Journal C -- Particles & Fields;May2004 Supplement 1, Vol. 34, ps325 

    The ALICE TOF array will be built using the Multigap Resistive Plate Chamber(MRPC) configured as a double stack. Each stack contains 5 gas gaps with width of 250 μm. There has been an intense R&D effort to optimise this new detector to withstand the problems connected with the high level of...

  • Properties of the metal–polymer interface observed with space-charge mapping techniques. Kurtz, S. R.; Anderson, R. A. // Journal of Applied Physics;7/15/1986, Vol. 60 Issue 2, p681 

    Deals with a study which measured the space charge and internal electric fields in metal-poly(ethylene terephthalate)-metal samples subjected to electric field stressing, using a space-charge mapping technique. Methodology of the study; Results and discussion.

  • Optical differentiator based on rapid collapse of Wannier-Stark localization due to space charge.... Hosoda, M.; Tominaga, K. // Applied Physics Letters;12/5/1994, Vol. 65 Issue 23, p2913 

    Demonstrates an optical differentiator operation using a gallium arsenide/aluminum arsenide short-period superlattice. Effect of electric field screening by photogenerated space charges on Wannier-Stark localization; Display of photocurrent spectra for strong optical excitation; Impact of...

  • Electron transport and charge induction in cadmium zinc telluride detectors with space charge build up under intense x-ray irradiation. Bale, Derek S.; Szeles, Csaba // Journal of Applied Physics;Jun2010, Vol. 107 Issue 11, p114512 

    Under intense x-ray irradiation, wide band gap semiconductor radiation detectors fabricated from crystals with low hole transport properties develop a steady-state space charge distribution that results from a dynamic equilibrium between charge carrier dynamics and the incident photon field. At...

  • Kinetics of electric field screening in a space-charge region with a leakage channel and low-temperature conductance of surface channels in high-resistivity n-Si. Bochkareva, N. I.; Klochkov, A. V. // Semiconductors;Dec98, Vol. 32 Issue 12, p1277 

    The kinetics of electric field screening in a space-charge region with a leakage channel is considered on the basis of an experimental study of the conductance of surface channels in n-Si. The characteristic times of the fast and slow stages of space-charge relaxation at the channel boundary...

  • Unipolar space charge and convective current formation in an electrogasdynamic compressor. Bumagin, G.; Ovchinnikov, S.; Lapkova, A. // Chemical & Petroleum Engineering;Jan2009, Vol. 45 Issue 1/2, p22 

    It is shown that a corona discharge can be used to ionize the working medium and form a space charge in the convective current in EGD compressor stages. An explanation is given to a first approximation of the formation of a negative unipolar space charge and convective current in the external...

  • Nonlinear transient response of extrinsic Ge far-infrared photoconductors. Westervelt, R. M.; Teitsworth, S. W. // Journal of Applied Physics;6/15/1985, Vol. 57 Issue 12, p5457 

    Discusses the physical mechanisms responsible for nonlinear phenomena and anomalous transient response of cooled extrinsic far-infrared photoconductors. Model describing carrier generation, trapping and impact ionization; Function of carrier heating by a dc electric field; Analysis of the role...

  • Temperature and electric field dependent mobility in poly(3-hexylthiophene) diodes. Giulianini, Michele; Waclawik, Eric R.; Bell, John M.; Motta, Nunzio // Journal of Applied Physics;Jul2010, Vol. 108 Issue 1, p014512 

    Current-voltage (I-V) curves of poly(3-hexylthiophene) (P3HT) diodes have been collected to investigate the polymer hole-dominated charge transport. At room temperature and at low electric fields the I-V characteristic is purely Ohmic whereas at medium-high electric fields, experimental data...

  • Time-resolved photocurrent response of metal-semiconductor-metal photodetectors to double-pulse.... Klingenstein, M.; Kuhl, J. // Applied Physics Letters;11/15/1993, Vol. 63 Issue 20, p2780 

    Examines the photocurrent response of gallium arsenide metal-semiconductor-metal photodetector. Measurement of the response following excitation with two femtosecond pulses; Influence of space charge effects on higher excitation energy; Similarity of the pulses; Impact of excitation density on...


Read the Article


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

Try another library?
Sign out of this library

Other Topics