CdZnTe photodiode arrays for medical imaging

R. Sudharsanan; T. Parodos; A. Ruzin; Y. Nemirovsky; N. H. Karam

doi:10.1007/BF02655026

CdZnTe photodiode arrays for medical imaging

R. Sudharsanan^*, T. Parodos, A. Ruzin, Y. Nemirovsky, N. H. Karam

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

In this paper, we report on the design, fabrication, and performance of the first CdZnTe Schottky photodiode arrays for radiation detection. High pressure Bridgman-grown CdZnTe substrates with bulk resistivities in the range 10⁸ to 10¹⁰ohm-cm were used. CdZnTe Schottky photodiodes were formed with In and Ti/Au contacts. Diode arrays with pixel sizes from 1000 × 1000 μm to 100 × 100 μm were fabricated. The diode's I-V characteristics exhibited low leakage current and high bulk resistivity; leakage current decreased as diode pixel size was reduced. Response of these detector arrays to high energy photons was uniform and their energy resolution improved with smaller pixel size.

Original language	English
Pages (from-to)	1318-1322
Number of pages	5
Journal	Journal of Electronic Materials
Volume	25
Issue number	8
DOIs	https://doi.org/10.1007/BF02655026
State	Published - Aug 1996
Externally published	Yes

Keywords

CdZnTe Schottky photodiodes
CdZnTe gamma-ray detectors
Medical imaging
Radiation detectors

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10.1007/BF02655026

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title = "CdZnTe photodiode arrays for medical imaging",

abstract = "In this paper, we report on the design, fabrication, and performance of the first CdZnTe Schottky photodiode arrays for radiation detection. High pressure Bridgman-grown CdZnTe substrates with bulk resistivities in the range 108 to 1010ohm-cm were used. CdZnTe Schottky photodiodes were formed with In and Ti/Au contacts. Diode arrays with pixel sizes from 1000 × 1000 μm to 100 × 100 μm were fabricated. The diode's I-V characteristics exhibited low leakage current and high bulk resistivity; leakage current decreased as diode pixel size was reduced. Response of these detector arrays to high energy photons was uniform and their energy resolution improved with smaller pixel size.",

keywords = "CdZnTe Schottky photodiodes, CdZnTe gamma-ray detectors, Medical imaging, Radiation detectors",

author = "R. Sudharsanan and T. Parodos and A. Ruzin and Y. Nemirovsky and Karam, {N. H.}",

year = "1996",

month = aug,

doi = "10.1007/BF02655026",

language = "אנגלית",

volume = "25",

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T1 - CdZnTe photodiode arrays for medical imaging

AU - Sudharsanan, R.

AU - Parodos, T.

AU - Ruzin, A.

AU - Nemirovsky, Y.

AU - Karam, N. H.

PY - 1996/8

Y1 - 1996/8

N2 - In this paper, we report on the design, fabrication, and performance of the first CdZnTe Schottky photodiode arrays for radiation detection. High pressure Bridgman-grown CdZnTe substrates with bulk resistivities in the range 108 to 1010ohm-cm were used. CdZnTe Schottky photodiodes were formed with In and Ti/Au contacts. Diode arrays with pixel sizes from 1000 × 1000 μm to 100 × 100 μm were fabricated. The diode's I-V characteristics exhibited low leakage current and high bulk resistivity; leakage current decreased as diode pixel size was reduced. Response of these detector arrays to high energy photons was uniform and their energy resolution improved with smaller pixel size.

AB - In this paper, we report on the design, fabrication, and performance of the first CdZnTe Schottky photodiode arrays for radiation detection. High pressure Bridgman-grown CdZnTe substrates with bulk resistivities in the range 108 to 1010ohm-cm were used. CdZnTe Schottky photodiodes were formed with In and Ti/Au contacts. Diode arrays with pixel sizes from 1000 × 1000 μm to 100 × 100 μm were fabricated. The diode's I-V characteristics exhibited low leakage current and high bulk resistivity; leakage current decreased as diode pixel size was reduced. Response of these detector arrays to high energy photons was uniform and their energy resolution improved with smaller pixel size.

KW - CdZnTe Schottky photodiodes

KW - CdZnTe gamma-ray detectors

KW - Medical imaging

KW - Radiation detectors

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CdZnTe photodiode arrays for medical imaging

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