AIR STABLE INFRARED PHOTODETECTORS FROM SOLUTION-PROCESSED INORGANIC SEMICONDUCTORS

摘要

The photodetector has a photoactive layer of semi-conducting inorganic nanoparticles positioned between the hole transporting electron blocking layer of the first metal oxide and the electron transporting hole blocking layer of the second metal oxide. The nanoparticles respond to electromagnetic radiation in at least the infrared region of the spectrum. The first metal oxide may be NiO, the second metal oxide may be ZnO or TiO _2. The metal oxide layer stabilizes the photodetector in air even in the absence of an encapsulating coating around the photodetector. The photodetector has a PIN structure.