Metal Semiconductor Metal

[gaboor]

Hi,

Iam doing some research on Metal Semiconductor Metal Photo detectors. Does anyone have usful resources for that?! MSM-PD is still a new topic and its still an active area. I have a couple of papers about it, but the equations are not very clear!!

Please if anyone can help

Thanx

 

[muqarrab]

Never heard of it....can you point some introduction?

 

[gaboor]

MSM was introduced in the early 1990s as a high speed photodetectors. Thes devices consist of aletrnate "fingers" of MSM and are sometimes referred to as interdigitated detectors. As surface detectors, they offer two imnportant advantages. Their speed is limited by the recombination time of the charge carriers and not by the device capacitance. And, light does not have to pass through a semiconductor substrate to reach the active region avoiding absorption by "dead" layers and improving spectral response. As a result, MSM detectors are avaliable with speeds up to 60GHz and impulse responses as short as 7ps, over a spectral range of 400-1700mm