LIGHT-RECEIVING ELEMENT, LIGHT-RECEIVING ELEMENT ARRAY, HYBRID DETECTING DEVICE, PHOTO SENSOR DEVICE, AND MANUFACTURING METHOD FOR LIGHT-RECEIVING ELEMENT ARRAY

摘要

PROBLEM TO BE SOLVED: To provide a light-receiving element and a light-receiving element array that have high light-receiving sensitivity in a near-infrared range, a manufacturing method for the light-receiving element array, a hybrid detecting device, and an optical sensor device.

SOLUTION: A light-receiving layer 3 having a band-gap wavelength of 1.65 to 3.0 μm is composed of a type 2 MQW formed of (GaAsSb/InGaAs) or (GaAsSb/InGaAsN (P, Sb)). Light-receiving elements are separated from adjacent light-receiving elements via grooves or impurity concentration distributions. An electrode 11 for each light-receiving element is in ohmic contact with an n-type region 6 formed on a cap layer for each light-receiving element.

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