ORGANIC THIN FILM LIGHT RECEIVING ELEMENT, ORGANIC THIN FILM LIGHT RECEIVING/EMITTING ELEMENT, ORGANIC THIN FILM LIGHT RECEIVING/EMITTING ELEMENT ARRAY, PULSE SENSOR USING THEREOF AND VEHICLE EQUIPPED WITH PULSE SENSOR

• Main Authors: HIROTA MASAKI, KUMAZAWA KINYA, OKADA JUN
• Format: Patent
• Language: English
• Published: 24.12.2009
• Subjects: BASIC ELECTRIC ELEMENTS; DIAGNOSIS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SEMICONDUCTOR DEVICES; SURGERY

PROBLEM TO BE SOLVED: To provide an organic thin film light receiving element capable of controlling a dark current by forming an ion doped surface. SOLUTION: The thin film light receiving element has, on a base material 1, a first electrode 2 and a second electrode 4, at least one of which possesses an optical transparency, and a photoconductive organic thin film layer 3 for generating a photo carrier by absorbing the incident light interposed between the first electrode 2 and the second electrode 4. At least one of the first electrode 2 and the photoconductive organic thin film layer 3 includes the ion doped surface 5, in which ions are doped, on the boundary between the first electrode 2 and the photoconductive organic thin film layer 3. The size of the energy of the work function of the first electrode 2 is smaller than the energy of the ionization potential of the photoconductive organic thin film layer 3, and to generate a photoinduced current, a larger positive voltage is applied to the first electrode 2 than that applied to the second electrode 4 which is capable of transporting the photo carrier. COPYRIGHT: (C)2010,JPO&INPIT