Thin-film inverted MSM photodetectors
- 1 February 1996
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 8 (2) , 266-268
- https://doi.org/10.1109/68.484262
Abstract
To improve the external quantum efficiency and maintain the high speed of metal-semiconductor-metal (MSM) photodetectors, a thin film inverted MSM (I-MSM), which is separated from the growth substrate, has fingers on the bottom of the device, and is bonded to a silicon host substrate, is reported for the first time. This device optimizes the tradeoff between speed and responsivity, demonstrating the improvement in responsivity that can be achieved using an I-MSM. The photodetector time domain response at /spl lambda/=1.3 /spl mu/m is 50 ps FWHM, with a 34 ps rise time and a 85 ps fall time.Keywords
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