MATERIAL, FABRICATION EQUIPMENT AND METHOD FOR STABLE, SENSITIVE PHOTODETECTOR, AND IMAGE SENSOR MADE THEREFROM

摘要

PROBLEM TO BE SOLVED: To provide improved optically sensitive devices.SOLUTION: The optically sensitive devices include a device comprising a first contact and a second contact each having a work function, and an optically sensitive material between the first contact and the second contact. The optically sensitive material comprises a p-type semiconductor or an n-type semiconductor, and the optically sensitive material has a work function. Circuitry applies a bias voltage between the first contact and the second contact. The optically sensitive material has an electron lifetime that is greater than an electron transit time from the first contact to the second contact when the bias is applied between the first contact and the second contact. The first contact provides injection of electrons and blocks extraction of holes. The interface between the first contact and the optically sensitive material provides a surface recombination velocity of less than 1 cm/s.