Multi-electrode CZT detector packaging using polymer flip chip bonding

Jordanov, Valentin T.; Macri, J.; Clayton, James E.; Larson, K.

doi:10.1016/s0168-9002(00)00912-8

Cited by 22 publications

(9 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interconnected "back", side and the portion of electrode on the front side of the detector but isolated from make up a second high voltage electrode referred to as bias. The concept of a multi-point contact HPGe detector was derived from other work using germanium for x-ray spectroscopy [16], [17], [18] and applications with CdZnTe have explored similar techniques [19], [20]. The a-Ge contacts of the HRG-1 detector were fabricated by RF sputter deposition of A of amorphous germanium using in the argon sputter gas.…”

Section: Apparatusmentioning

confidence: 99%

A Multi-Point Contact HPGe Detector

Dion

Fast

Hull

et al. 2014

IEEE Trans. Nucl. Sci.

View full text Add to dashboard Cite

A novel, multi-point contact high-purity germanium detector has been developed for applications in high-rate gamma environments. The planar detector was fabricated with seven point contacts, a high-voltage steering grid and bias electrode using amorphous germanium technology. We have characterized this detector and report herein on the depletion profile, leakage current, energy resolution, and charge-sharing behavior.

show abstract

Section: Apparatusmentioning

confidence: 99%

A Multi-Point Contact HPGe Detector

Dion

Fast

Hull

et al. 2014

IEEE Trans. Nucl. Sci.

View full text Add to dashboard Cite

show abstract

“…Two kinds of strip detector (Figure 16), an orthogonal coplanar strip detectors [69,70] and a charge-sharing strip detector [13], were developed by the University of New Hampshire and based on the concept of the three-electrode model metioned above. Both of these designs belong to single-sided detector that can contribute N 2 pixels but only need 2N electronics, which greatly reduce the power requirement and complexity of the device electronics.…”

Section: Unipolar Detectors Of Different Anode Geometriesmentioning

confidence: 99%

Progress in the Development of CdZnTe Unipolar Detectors for Different Anode Geometries and Data Corrections

Zhang

et al. 2013

Sensors

View full text Add to dashboard Cite

CdZnTe detectors have been under development for the past two decades, providing good stopping power for gamma rays, lightweight camera heads and improved energy resolution. However, the performance of this type of detector is limited primarily by incomplete charge collection problems resulting from charge carriers trapping. This paper is a review of the progress in the development of CdZnTe unipolar detectors with some data correction techniques for improving performance of the detectors. We will first briefly review the relevant theories. Thereafter, two aspects of the techniques for overcoming the hole trapping issue are summarized, including irradiation direction configuration and pulse shape correction methods. CdZnTe detectors of different geometries are discussed in detail, covering the principal of the electrode geometry design, the design and performance characteristics, some detector prototypes development and special correction techniques to improve the energy resolution. Finally, the state of art development of 3-D position sensing and Compton imaging technique are also discussed. Spectroscopic performance of CdZnTe semiconductor detector will be greatly improved even to approach the statistical limit on energy resolution with the combination of some of these techniques.

show abstract

“…The first single-sided strip detector concept and its construction were described previously [1], [2]. in gray and black.…”

Section: Two Single-sided Strip Detector Conceptsmentioning

confidence: 99%

Single-sided CZT strip detectors

Macri

Hamel

Julien

et al. 2004

IEEE Trans. Nucl. Sci.

View full text Add to dashboard Cite

We report progress in the study of thick CZT strip detectors for 3-D imaging and spectroscopy and discuss two approaches to device design. Unlike double-sided strip detectors, these devices feature both row and column contacts implemented on the anode surface. This electron-only approach circumvents problems associated with poor hole transport in CZT that normally limit the thickness and energy range of double-sided strip detectors. The work includes laboratory and simulation studies aimed at developing compact, efficient, detector modules for 0.05 to 1 MeV gamma radiation measurements while minimizing the number and complexity of the electronic readout channels. These devices can achieve similar performance to pixel detectors for both 3-D imaging and spectroscopy. The low channel count approach can significantly reduce the complexity and power requirements of the readout electronics. This is particularly important in applications requiring large area detector arrays. We show two single-sided strip detector concepts. One, previously reported, features rows established with collecting contacts and columns with noncollecting contacts. Another, introduced here, operates on a charge sharing principle and establishes both rows and columns with collecting contacts on the anode surface. In previous work using the earlier strip detector concept we reported simulations and measurements of energy and spatial resolution for prototype 5-and 10-mm-thick CZT detectors. We now present the results of detection efficiency and uniformity measurements conducted on 5-mm-thick detectors using a specific configuration of the front-end electronics and event trigger. We discuss the importance of the detector fabrication processes when implementing this approach.

show abstract

Multi-electrode CZT detector packaging using polymer flip chip bonding

Cited by 22 publications

References 5 publications

A Multi-Point Contact HPGe Detector

A Multi-Point Contact HPGe Detector

Progress in the Development of CdZnTe Unipolar Detectors for Different Anode Geometries and Data Corrections

Single-sided CZT strip detectors

Contact Info

Product

Resources

About