Threshold voltage of charge storage in acoustic-charge-transport devices: Experiments and model

Schmukler, Bruce C.; Hoskins, M.J.

doi:10.1063/1.99432

Cited by 5 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In ACT devices, the dynamic piezoelectric potential of a propagating surface acoustic wave is able to convey charges in the wave propagation direction. Favoured by the slower velocity of the acoustic wave compared with the speed of light, and also because of the possibility to transmit information analogically, there are many applications, such as for example delay lines and high-speed monolithic signal processors (Hoskins et al 1982, Schmukler and Hoskins 1988, Rotter et al 1999, that can be successfully implemented.…”

Section: Introductionmentioning

confidence: 99%

Acoustic charge transport in GaN nanowires

et al. 2008

View full text Add to dashboard Cite

We present acoustic charge transport in GaN nanowires (GaN NWs). The GaN NWs were grown by molecular beam epitaxy (MBE) on silicon(111) substrates. The nanowires were removed from the silicon substrate, aligned using surface acoustic waves (SAWs) on the piezoelectric substrate LiNbO(3) and finally contacted by electron beam lithography. Then, a SAW was used to create an acoustoelectric current in the GaN NWs which was detected as a function of radio-frequency (RF) wave frequency and its power. The presented method and our experimental findings open up a route towards new acoustic charge transport nanostructure devices in a wide bandgap material such as GaN.

show abstract

Section: Introductionmentioning

confidence: 99%

Acoustic charge transport in GaN nanowires

et al. 2008

View full text Add to dashboard Cite

show abstract

Dynamics of charge storage in acoustic charge transport devices on GaAs

Schmukler

1991

Journal of Applied Physics

View full text Add to dashboard Cite

Acoustic charge transport devices in GaAs are charge-coupled devices that typically transport charge at the velocity of sound. However, charge transport can be temporarily inhibited by electrical barriers in the transport channel, a process known as charge storage. In this paper the fundamental properties of two methods of charge storage, single-packet and double-packet, are investigated and compared using theory and experiments. A 1-D storage model is developed which provides insight into the dynamics of the charge storage process. The impact of charge storage on device frequency response is analyzed. Storage capacity is experimentally characterized as a function of storage voltage. The key factors that limit storage capacity are found to be intercell diffusion, surface charge extraction, barrier transition times, and delay-line charge capacity. Furthermore, double-packet storage has been found to provide higher storage capacity with less storage voltage than single-packet storage.

show abstract

The effects of grating size on acoustic charge transport properties on GaAs

Schmukler

1992

Journal of Applied Physics

View full text Add to dashboard Cite

Gratings in the channels of acoustic charge transport devices on GaAs create perturbing electric fields that can upset the charge transport process, principally by reducing the charge carrying capacity. An experimental device is designed to test the effect of 1.0, 1.3, and 1.6 μm gratings on the acoustic charge transport properties. The measured charge capacity losses are found to be less than the measurement tolerances, for transport parameters typical of delay line devices. In addition, for parameters typical of charge storage devices, the measured charge capacity losses are higher, but are still low. Furthermore, an approximate theory to predict the charge capacity loss is presented; its predictions are in reasonable agreement with experimental results.

show abstract

Threshold voltage of charge storage in acoustic-charge-transport devices: Experiments and model

Cited by 5 publications

References 3 publications

Acoustic charge transport in GaN nanowires

Acoustic charge transport in GaN nanowires

Dynamics of charge storage in acoustic charge transport devices on GaAs

The effects of grating size on acoustic charge transport properties on GaAs

Contact Info

Product

Resources

About