Acoustic Buildup in Photoconducting CdS Subjected to High rf Electric Fields
- 1 July 1971
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 42 (8), 3038-3039
- https://doi.org/10.1063/1.1660679
Abstract
Long‐term acoustic shear‐wave buildup has been observed in the bulk of photoconducting CdS subjected to rf fields greater than 104 V/cm. Acoustic power was seen to grow for times as long as 5 msec in some samples. Short rf pulses applied within 1 msec after the long pulse generated much larger acoustic flux than if applied thereafter. At a given frequency the effect was a maximum in a certain conductivity region, this conductivity being higher the higher the frequency. A proposed explanation involves field quenching of the photoconductivity in narrow high‐resistivity bands.Keywords
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