3D diamond detectors with millimeter-long graphite pillared electrodes
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2017-01-01 |
| Journal | Iris (Roma Tre University) |
| Authors | P. Oliva, S. Salvatori, G. Conte, M. Girolami, D.M. Trucchi |
Abstract
Section titled āAbstractāWe introduce the electrical characterization of 2.5 mm-long graphite pillars buried in single crystal CVD diamond. A mode-locked Ti:Sapphire laser generating 5 ps pulses at the wavelength of 800 nm with a repetition rate of 1 kHz has been used to directly produce graphite columns with a diameter of about 10 ļm and an aspect ratio greater than 240. A pair of 12 pillars was realized within the diamond bulk starting from opposite lateral faces resulting in an interdigitated-like structure buried within the diamond volume. Tests with 2.28 MeV electrons emitted by 90Sr,Y collimated radioactive source demonstrate that the charge collected by the active volume saturates at 1.00Ā±0.02 fC at an electric field strength evaluated as Ā±1.3 V/ļm with electrons impinging parallel to the rows. The collected charge, much lower than that expected by theoretical estimation, has been tentatively attributed to a loss of biasing due to the probable non-continuity of the graphite pillars within the sample.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal Sourceā- DOI: None