I have been working on a silicon-based photodetector device that is exhibiting a light-induced negative differential resistance behavior. Depending on where light is incident, the peak to valley current ratio can go as high as 40. I understand that the primary applications of negative differential resistance devices are oscillators and amplifiers. Does this light-induced NDR behavior add more value to the device somehow? Are there some other applications where such NDR or light-induced NDR behaviors can possibly be utilized?

Thanks in advance for your kind suggestions!

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