Trap recharging wave mode with a linear dispersion law for space-charge waves in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>CdTe</mml:mi><mml:mo>:</mml:mo><mml:mi>Ge</mml:mi></mml:mrow></mml:math>

Петров, М. П.; Bryksin, V. V.; Shcherbin, K.; Lemmer, M.; Imlau, Mirco

doi:10.1103/physrevb.74.085202

Cited by 10 publications

(2 citation statements)

References 27 publications

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“…Figure 3 plots [7,28,29]. As figure 3 demonstrates, the curves saturate when the Fermi level approaches the energy level of Ge or Sn; then, the concentrations of the ionized species comes close to the total concentrations of Ge or Sn.…”

Section: Trapping At Deep-donor Levelsmentioning

confidence: 92%

Characterization of compensation and trapping in CdTe and CdZnTe: Recent advances

Babentsov

Franc²,

Höschl

et al. 2009

Cryst. Res. Technol.

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Results on the properties of the known impurities, Ge, Sn, V and Bi, and the lattice imperfections, V Cd and Te Cd are summarized. We discuss their role in compensation, and in buffering the variations in shallow electronic levels in the grown ingot. We demonstrate that (~2-3 kT) variations of the Fermi energy increases carrier trapping to the deep levels. Trapping is manifest in a photoconductivity signal that can be studied by photoconductivity methods, thus allowing to monitor the spectroscopic-grade material before fabricating the detectors. Our approach could be important in preventing the after-glow effect and polarization. Dedicated to Prof. Wolfgang Neumann on the occasion of his 65th birthday

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Section: Trapping At Deep-donor Levelsmentioning

confidence: 92%

Characterization of compensation and trapping in CdTe and CdZnTe: Recent advances

Babentsov

Franc²,

Höschl

et al. 2009

Cryst. Res. Technol.

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“…In recent years, this method uncovered several insights to the physics of SCW, for example, the uncommon case of traprecharging waves ͑TRW͒ with a linear dispersion law, 9 the interaction of SCW with magnetic fields, 10,11 and the effects of optical interband excitation. 12 However, these studies were affected by the following systematic limitations: ͑i͒ the oscillating pattern has no distinctive direction of motion, i.e., the sign of the charge carriers participating in SCW formation cannot be determined.…”

Section: Introductionmentioning

confidence: 99%

Space-charge wave excitation by superposition of static and moving interference patterns

et al. 2009

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The optical excitation of space-charge waves ͑SCW͒ has been realized experimentally by superposition of static and moving light interference patterns with Bi 12 GeO 20 as an example. A clear resonance behavior of the ac detected in an external electric circuit, as well as an inverse dispersion law, is verified, and a low frequency signal due to a modulation of the photoconductivity appears. The results are compared to the classical method using an oscillating light pattern for excitation. The optimized method allows for the detection of the charge carriers participating in SCW formation and yields an excitation of higher quality.

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Defects and photorefraction: A relation with mutual benefit

Imlau

2007

Physica Status Solidi (a)

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Intrinsic and extrinsic defects are at the origin of photorefraction. Donor and acceptor defects define the properties of the photorefractive response in particular its dispersive behavior. This enables, e.g., targeted material design by incorporation of extrinsic defects in photorefractive media. Vice versa, defect physics benefits from photorefraction, i.e., photorefraction is successfully applied in defect studies and material analysis. Concepts for investigations make use of the great variety of nonlinear photorefractive phenomena. These include the appearance of a transient light‐induced absorption, two‐wave mixing at one‐dimensional photonic gratings, photo‐assisted self‐assembly of photonic gratings and space‐charge waves originating from oscillating photonic gratings. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Trap recharging wave mode with a linear dispersion law for space-charge waves inCdTe:Ge

Cited by 10 publications

References 27 publications

Characterization of compensation and trapping in CdTe and CdZnTe: Recent advances

Characterization of compensation and trapping in CdTe and CdZnTe: Recent advances

Space-charge wave excitation by superposition of static and moving interference patterns

Defects and photorefraction: A relation with mutual benefit

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