A photodiode is a p-n junction or pin semiconductor device that consumes light energy to generate electric current. It is also sometimes referred as photo-detector, photo-sensor, or light detector. Photodiodes are specially designed to operate in reverse bias condition. ref
A CMOS Buried Double Junction PN (BDJ) photodetector consists of two vertically-stacked photodiodes. It can be operated as a photodiode with improved performance and wavelength-sensitive response. ref
A photoresistor (also known as a light-dependent resistor, LDR, or photo-conductive cell) is a passive component that decreases resistance with respect to receiving luminosity (light) on the component's sensitive surface. ref
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Five photodetector layout by sky130 PDK 1. Simple p-n photodiode. 2. Buried double junction (BDJ) photodiode. 3. Buried double junction (BDJ) photodiode by deep nwell layer. 4. n type photoresistor. 5. p type photoresistor.
10/10/21 11:55:59 PDT