METHOD AND DEVICE FOR MEASURING TEMPERATURES, ESPECIALLY CRYOGENIC TEMPERATURES, USING SEMICONDUCTOR NANOCRYSTALS

摘要

Method and device for measuring temperatures, especially cryogenic temperatures, using semiconductor nanocrystals To measure the temperature of an object (20), a sensor (24) having semiconductor nanocrystals is used, the nanocrystals are brought into thermal contact with the object and the nanocrystals are irradiated with a light (26) such that they emit fluorescence radiation (28). According to the invention, the decay time of the radiation is determined and the temperature is determined from this time.