High sensitivity Photoconductive for ZnO:MgO Nanoparticles

Analysis of Sensitivity of Photoconductive Receivers for Free space optical communication systems

In this paper we examine theoretically the performance of an optical receiver based on an Hg0.77Cd0.23Te photoconductive detector for its possible application at 9.6 μm free space optical communication system at moderate bit rates. A rigorous noise model of the receiver has been developed for this purpose by incorporating all significant sources of noise. Our analysis reveals that the photocond...

Photoconductive Properties of Novel High- Performance Organic Semiconductors

High-Z nanoparticles for enhanced sensitivity in semiconducting polymer X-ray detectors

Semiconducting polymers have previously been used as the transduction material in X-ray dosimeters, but these devices have a rather low detection sensitivity because of the low X-ray attenuation efficiency of the organic active layer. Here, we demonstrate a way to overcome this limitation through the introduction of high density nanoparticles having a high atomic number (Z) to increase the X-ra...

375GM-bandwidth photoconductive detector

Much progress has been made over the past several years in the development of high-speed photodiode detectors. A detection bandwidth of 105 GHz together with a responsivity of 0.1 A# have been reported for a metalsemiconductor-metal (MSM) photodiode.’ The most common approach to increasing the bandwidth in MSM photodiodes (at least up to 100 GHz) is to shorten the carrier transit time by reduci...

Gallium Nitride Photoconductive Detectors

Since 1994, the Applied Physics Laboratory has been collaborating with NASA Goddard Space Flight Center to develop photodetectors based on gallium nitride and aluminum gallium nitride material produced in the Milton S. Eisenhower Research and Technology Development Center. This article describes the results of our collaboration and highlights the development of gallium nitride photodetectors wi...