Fishing – trapping – and vermin destroying
Patent
1991-10-10
1992-12-08
Chaudhuri, Olik
Fishing, trapping, and vermin destroying
437228, H01L 4900
Patent
active
051697904
ABSTRACT:
A thyristor having low-reflection light-triggering structure. In a light-triggerable thyristor, pyramidal depressions are formed in a simple manner by a preferred etching method, being formed in the region of the photon entry face in order to produce a low-reflection light-triggering structure. Incident light is absorbed in the pyramidal depressions largely independent of the wavelength of the incident light and nearly completely. The low-reflection light-triggering structure thereby produced can be formed with relatively little outlay. This is especially true when a defined overhead ignition voltage is simultaneously set by the pyramidal depressions.
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"Novel Gate Structure for High Voltage Light-Triggered Thyristor", Japanese Journal of Applied Physics, vol. 21, (1982), Supplement 21-1, pp. 91-96.
Kuhnert Reinhold
Tuerkes Peter
Chaudhuri Olik
Siemens Aktiengesellschaft
Trinh Loc Q.
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