Optically driven photoconductive devices for power switching application. Part 1: theory and experimental results

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Optically driven photoconductive devices for power switching application. Part 1: theory and experimental results

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The photoconductive circuit element (PCE) can be made relatively compact, can hold off a large voltage when the light is off and can conduct a large current when the light is on. Thus the PCE is an attractive device for power switching applications. The authors have designed, fabricated and measured several prototype (scaleddown) PCEs to study the feasibility of using such devices for power-switching purposes. Physical insights and theoretical analysis are also discussed. Qualitative agreements are found between experimental data and the results calculated from a recently developed numerical model.

Inspec keywords: semiconductor switches; p-i-n diodes; semiconductor device models; power electronics; photoconducting devices

Other keywords: photoconductive circuit element; optically driven photoconductive devices; numerical model; power switching application; HV switches

Subjects: Semiconductor device modelling, equivalent circuits, design and testing; Power electronics, supply and supervisory circuits; Photoelectric devices; Relays and switches

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Correspondence
This article has following corresponding article(s):
Optically driven photoconductive devices for power switching application. Part 2: Thermal modelling including heat sink