Recent developments in compound semiconductor detectors are reviewed, highlighting the
latest spectroscopic performance from devices fabricated from a range of wide bandgap …

The field of pixel detectors has grown strongly in recent years through progress in CMOS
technology, which permits many hundreds of transistors to be implemented in an area of 50 …

Silicon-based tracking detectors have been used in several important applications, such as
in cancer therapy using particle beams, and for the discovery of new elementary particles at …

We have grown 4 inch GaAs epitaxial layers of thickness ranging from 100 to 600/spl mu/m.
With such layers we made pixel X-ray detectors where each pixel is ap/sup+//i/n/sup+/mesa …

Self-supported thick (200–500μm), non-intentionally doped, epitaxial GaAs layers are good
candidates for X-ray imaging for the following reasons. Their electronic properties are …

An attempt is made to analyze and summarize the literature data on hybrid x-ray GaAs pixel
detectors designed for medical imaging. Criteria are stated for selecting a semiconductor …

We first briefly review the performances for X-ray detection which are obtained using thin
epitaxial GaAs layers. We then show that good detectors can be realized on thick and large …

A study of leakage currents using GaAs mesa pin diodes for X-ray photon counting is
presented. Different wet chemical etching solution and etch depth were used in the …

Measurements of laser-induced pulse shapes are reported in partially-depleted 150μm thick
epitaxial GaAs, carried out as a function of device temperature and bias voltage. Residual …

Because the rate of indirect photon-electron conversion for scintillator materials coupled with
arrays of photodiodes is at least 25 times smaller than the rate of direct conversion, we …