Photodetectors for Optoelectronic Sensors

Dr. Heinrich Gottlob, VISHAY Semiconductor GmbH, Theresienstr. 2, 74072 Heilbronn, Germany

The physics of silicon photodetector diodes is discussed with respect to spectral sensitivity. While silicon offers a broad spectral sensitivity range including human eye range especially its near infrared sensitivity challenges the ambient light sensor designer. Application examples are given for standard and advanced ambient light sensors from VISHAY´s optoelectronic device portfolio. Spectral sensitivity engineering is demonstrated by package based filters or on chip interference filters.