Laser-processed three dimensional graphitic electrodes for diamond radiation detectors

Journal Article · Mon Jul 22 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4816328· OSTI ID:22218306

Caylar, Benoı-carett; Pomorski, Michal; Bergonzo, Philippe ^[1]

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1. CEA-LIST, Diamond Sensors Laboratory, Gif-sur-Yvette F-91191 (France)

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.

• OSTI ID: 22218306
• Journal Information: Applied Physics Letters, Vol. 103, Issue 4; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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