CdZnTe photodiode arrays for medical imaging

被引：8

作者：

Sudharsanan, R ^{[1
]}

Parodos, T ^{[1
]}

Ruzin, A ^{[1
]}

Nemirovsky, Y ^{[1
]}

Karam, NH ^{[1
]}

机构：

[1] TECHNION ISRAEL INST TECHNOL,DEPT ELECT ENGN,IL-32000 HAIFA,ISRAEL

来源：

JOURNAL OF ELECTRONIC MATERIALS | 1996年 / 25卷 / 08期

关键词：

CdZnTe gamma-ray detectors; CdZnTe Schottky photodiodes; medical imaging; radiation detectors;

D O I：

10.1007/BF02655026

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 10(8) to 10(10) ohm-cm were used. CdZnTe Schottky photodiodes were formed with In and Ti/Au contacts. Diode arrays with pixel sizes from 1000 x 1000 mu m to 100 x 100 mu m 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.

引用

页码：1318 / 1322

页数：5

共 14 条

[1] CHARGE-TRANSPORT IN ARRAYS OF SEMICONDUCTOR GAMMA-RAY DETECTORS [J].

BARRETT, HH ;

ESKIN, JD ;

BARBER, HB .

PHYSICAL REVIEW LETTERS, 1995, 75 (01) :156-159

[2] CD1-XZNXTE4 GAMMA-RAY DETECTORS [J].

BUTLER, JF ;

LINGREN, CL ;

DOTY, FP .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1992, 39 (04) :605-609

[3] PROPERTIES OF CDZNTE CRYSTALS GROWN BY A HIGH-PRESSURE BRIDGMAN METHOD [J].

DOTY, FP ;

BUTLER, JF ;

SCHETZINA, JF ;

BOWERS, KA .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1992, 10 (04) :1418-1422

[4] PIXELLATED CDZNTE DETECTOR ARRAYS [J].

DOTY, FP ;

BARBER, HB ;

AUGUSTINE, FL ;

BUTLER, JF ;

APOTOVSKY, BA ;

YOUNG, ET ;

HAMILTON, W .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 353 (1-3) :356-360

[5] CURRENT STATE-OF-THE-ART APPLICATIONS UTILIZING CDTE DETECTORS [J].

EISEN, Y .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1992, 322 (03) :596-603

[6] ASPECTS OF SEMICONDUCTOR CURRENT MODE DETECTORS FOR X-RAY COMPUTED-TOMOGRAPHY [J].

GLASOW, PA ;

CONRAD, B ;

KILLIG, K ;

LICHTENBERG, W .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1981, 28 (01) :563-571

[7] OHMIC CONTACTS TO P-TYPE CADMIUM TELLURIDE AND CADMIUM MERCURY TELLURIDE [J].

JANIK, E ;

TRIBOULET, R .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1983, 16 (12) :2333-2340

[8]

Knoll G. F., 1989, RAD DETECTION MEASUR

[9]

NEMIROVSKY Y, 1995, MCT WORKSH

[10]

PARNHAM KB, 1995, P 7 EUR S SEM DET

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