Solid-State Radiation Detectors

2	CdZnTe for Gamma- and X-Ray Applications Michael Prokesch

CONTENTS

2.1    Introduction

2.1.1    Crystal Growth

2.1.2    Materials and Device Challenges

2.1.3    Higher-Dimensional Defects

2.1.4    Annealing

2.1.5    Radiation Sensor Devices

2.2    Basics of Semi-Insulating CZT

2.2.1    Semi-Insulating State

2.2.2    Charge Trapping and Detrapping

2.2.3    Capture Cross Sections

2.2.4    Deep-Level Concentrations

2.2.5    Self-Compensation

2.3    Dynamic High-Flux Polarization

2.3.1    X-Ray-Generated Charge

2.3.2    Space Charge and Detrapping

2.3.3    Polarization in Photon Counting

2.3.4    Dynamic Lateral Lensing

2.3.5    X-Ray Photocurrents

2.3.6    Infrared Photocurrents

2.4    Summary

References

2.1    INTRODUCTION

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