Author/Authors :
Gulian، نويسنده , , A and Wood، نويسنده , , K and Van Vechten، نويسنده , , D and Fritz، نويسنده , , G and Wu، نويسنده , , H.-D and Bounnak، نويسنده , , John Bussman، نويسنده , , K and Winzer، نويسنده , , K and Kunii، نويسنده , , S and Gurin، نويسنده , , V and Korsukova، نويسنده , , M and Mitterer، نويسنده , , C and Carlsson، نويسنده , , M and Golf، نويسنده , , F and Kuzanyan، نويسنده , , A and Badalyan، نويسنده , , G and Harutyunyan، نويسنده , , S and Pe، نويسنده ,
Abstract :
Practical implementation of thermoelectric (QVD) detectors requires cryogenic thermoelectric sensors with a high figure of merit. For this requirement there can be different solutions: thin films, bulk materials and whiskers. Initial prototype QVD devices used Au–Fe thin film sensors. Another class of materials, lanthanum (cerium) hexaborides La(Ce)B6, has higher Seebeck coefficient at cryogenic temperatures, and therefore one can expect higher figures of merit for devices based on these materials. To utilize La(Ce)B6 crystals with different La–Ce content as sensor elements we investigated their kinetic properties. Then we explored prototype devices based on bulk single-crystalline sensors. Subsequently, we manufactured and successfully tested a candidate single-photon detector device with a sharp-end hexaboride sensor and small bismuth absorber.
Keywords :
Detectors , Single photon , Microbolometers , Lanthanum (cerium) hexaborides , Sensors
