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Title: Laser-processed three dimensional graphitic electrodes for diamond radiation detectors

We have used an original approach for diamond detectors where three dimensional buried graphitic electrodes are processed in the bulk of a diamond substrate via laser-induced graphitization. Prototype made of polycrystalline chemical vapor deposition diamond was fabricated using a nanosecond UV laser. Its charge collection efficiency was evaluated using α-particles emitted by a 241-Americium source. An improved charge collection efficiency was measured proving that laser micro-machining of diamond is a valid option for the future fabrication of three dimensional diamond detectors.
Authors:
; ;  [1]
  1. CEA-LIST, Diamond Sensors Laboratory, Gif-sur-Yvette F-91191 (France)
Publication Date:
OSTI Identifier:
22218306
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 4; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AMERICIUM 241; CHARGE COLLECTION; CHEMICAL VAPOR DEPOSITION; DIAMONDS; EFFICIENCY; ELECTRODES; EMISSION; FABRICATION; GRAPHITE; GRAPHITIZATION; LASER BEAM MACHINING; LASERS; POLYCRYSTALS; RADIATION DETECTORS; SUBSTRATES