Characterization of CdZnTe and CdTe:Cl materials and their relationship to X- and γ-ray detector performance

Verger, L.; Baffert, N; Rosaz, M.; Rustique, J.

doi:10.1016/s0168-9002(96)00292-6

Cited by 31 publications

(9 citation statements)

References 7 publications

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“…A pulse bias was applied just before ( 20 s) the incidence of each of the laser light pulses, and the duration was selected (150 s) to be much less than the dielectric relaxation time of the sample in order to avoid the possible band bending effect on the measured current waveform. Examples of band bending effects on the current waveforms are demonstrated in [9]. The transient current signals from the sample were directly fed to a digital oscilloscope (Tektronix TDS 3052, 5 GS/s) through a 50-load resistor.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Surface Recombination Velocity on CdTe Radiation Detectors by Time-of-Flight Measurements

Suzuki¹,

Shiraki

2009

IEEE Trans. Nucl. Sci.

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The surface recombination velocity on high-resistivity CdTe with several different crystallographic orientations-(111), 5 off from (111), 8 off from (311), and (511)-has been investigated by using a " -model" spectral fitting method in combination with time-of-flight drift mobility measurement. In the samples orientated parallel to (111) and 5 off from (111), the Cd face exhibits a higher surface recombination velocity ( 6 10 5 cm/s) than the Te face ( 3 10 5 cm/s). Away from the polar face and toward the (511) face, the difference is less pronounced, although not completely absent.

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Section: Methodsmentioning

confidence: 99%

Evaluation of Surface Recombination Velocity on CdTe Radiation Detectors by Time-of-Flight Measurements

Suzuki¹,

Shiraki

2009

IEEE Trans. Nucl. Sci.

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“…Consequently IBIC imaging is used to produce high resolution maps of either electron or hole CCE, depending on irradiation of the device cathode or anode, respectively. The mean carrier drift length increases as an exponential function of the applied bias voltage, as described by the Hecht equation [9], which describes CCE as a function of the interaction depth x of the radiation from the cathode:…”

Section: Theorymentioning

confidence: 99%

IBIC characterization of charge transport in CdTe:Cl

et al. 2007

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Studies of charge transport uniformity in bulk CdTe : Cl have been carried out using ion beam induced charge (IBIC) imaging. High resolution maps of charge collection efficiency, mobility-lifetime product (µτ ) and drift mobility (µ) were measured using a scanning microbeam of 2 MeV protons focused to a beam diameter of ∼ 3 µm. Excellent charge transport uniformity was observed in single crystal CdTe : Cl, with electron µτ values of up to 5 · 10 −3 cm 2 /Vs. The presence of extended defects such as tellurium inclusions was also studied using IBIC, and their influence on the charge transport performance of CdTe detector structures is discussed.

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“…L'application du CdTe pour la spectrométrie X et y est étudiée depuis quelques années dans un certain nombre de laboratoires (Verger et al, 1996). Il présente, en effet, l'avantage par rapport au Si et même au Ge d'être plus dense et donc d'offrir des efficacités de détection intrinsèques supérieures.…”

Section: Nouvelles Orientations De Recherchesunclassified

Les mesures anthroporadiamétriques dans les basses énergies : évolution technologique et bases des recherches actuelles

Franck¹,

Carlan²,

Berard³

et al. 1997

Radioprotection

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RÉSUMÉL'examen d'anthroporadiamétrie pulmonaire est par sa rapidité de réponse un moyen utile à la surveillance médicale pour l'estimation de la contamination après inhalation de produits radiotoxiques. ABSTRACT X and low energy gamma ray spectroscopy for in-vivo monitoring: Technical evolution and requirements for future research. Whole body counting remains a major tool for individual monitoring for its fast response to asses the contamination of the lung after inhalation of radiotoxic compounds. Considering actinides such as usPu emitting associated X and low energy yrays, in spite of improved detection methods based on large volume germanium crystals, al1 investigations show detection limits much too high compared to annual limit of incorporation. Based on results obtained using germanium systems, it was shown that the improvement of lung monitoring requires the development of X spectroscopy systems with resolution comparable to germanium but operating at room temperature to allow a larger detection area better adjusted to the chest volume. Among possible materials, Si and CdTe semiconductors were identified as most promising ones.

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Characterization of CdZnTe and CdTe:Cl materials and their relationship to X- and γ-ray detector performance

Cited by 31 publications

References 7 publications

Evaluation of Surface Recombination Velocity on CdTe Radiation Detectors by Time-of-Flight Measurements

Evaluation of Surface Recombination Velocity on CdTe Radiation Detectors by Time-of-Flight Measurements

IBIC characterization of charge transport in CdTe:Cl

Les mesures anthroporadiamétriques dans les basses énergies : évolution technologique et bases des recherches actuelles

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