Three-dimensional diamond detectors: Charge collection efficiency of graphitic electrodes

Journal Article · Mon Dec 02 00:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4839555· OSTI ID:22253907

Parrini, G.; Sciortino, S. ^[1]; Bellini, M.; Gorelli, F.; Santoro, M. ^[2]; Corsi, C. ^[2]

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1. National Institute of Nuclear Physics (INFN), Via B. Rossi 1-3, 50019 Sesto Fiorentino (Italy)
2. European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, 50019 Sesto Fiorentino (Italy)

Implementation of 3D-architectures in diamond detectors promises to achieve unreached performances in the radiation-harsh environment of future high-energy physics experiments. This work reports on the collection efficiency under β-irradiation of graphitic 3D-electrodes, created by laser pulses in the domains of nanoseconds (ns-made-sensors) and femtoseconds (fs-made-sensors). Full collection is achieved with the fs-made-sensors, while a loss of 25%–30% is found for the ns-made-sensors. The peculiar behaviour of ns-made sensors has been explained by the presence of a nano-structured sp{sup 3}-carbon layer around the graphitic electrodes, evidenced by micro-Raman imaging, by means of a numerical model of the charge transport near the electrodes.

• OSTI ID: 22253907
• Journal Information: Applied Physics Letters, Vol. 103, Issue 23; 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

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
77 NANOSCIENCE AND NANOTECHNOLOGY
CHARGE COLLECTION
CHARGE TRANSPORT
DIAMONDS
EFFICIENCY
ELECTRODES
GRAPHITE
HIGH ENERGY PHYSICS
IRRADIATION
NANOSTRUCTURES
SENSORS
THREE-DIMENSIONAL CALCULATIONS