In this work we present the performances of polycrystalline diamond sensors grown with a chemical vapour deposition (CVD) proprietary method. The standard characterization on these samples have assessed their high crystalline quality. The collection response to fast (1 MeV) β particle are presented. The efficiency seems limited mainly by a high concentration of grain boundaries, since the material obtained results very pure, from ESR and Raman characterization. A high fluence of neutron can remove some traps, increasing the dynamic response and the stability of the samples used as UV detectors in the 300-200 nm range. The methods aimed to improve the present quality is also briefly discussed together with the capability of the CVD system to grow single-crystal specimens.
Diamond radiation sensors prepared by pulsed glow discharge CVD / E. Borchi ; R. D'Alessandro;S. Lagomarsino ;M. Lucarini ; S. Mersi ; F. Pieralli; S. Sciortino. - STAMPA. - (2004), pp. 387-391. (Intervento presentato al convegno 5th International Conference on Space Optics (ICSO 2004)/ESA tenutosi a Toulouse, France nel 30 March - 2 April 2004).
Diamond radiation sensors prepared by pulsed glow discharge CVD
BORCHI, EMILIO;D'ALESSANDRO, RAFFAELLO;LAGOMARSINO, STEFANO;MERSI, STEFANO;SCIORTINO, SILVIO
2004
Abstract
In this work we present the performances of polycrystalline diamond sensors grown with a chemical vapour deposition (CVD) proprietary method. The standard characterization on these samples have assessed their high crystalline quality. The collection response to fast (1 MeV) β particle are presented. The efficiency seems limited mainly by a high concentration of grain boundaries, since the material obtained results very pure, from ESR and Raman characterization. A high fluence of neutron can remove some traps, increasing the dynamic response and the stability of the samples used as UV detectors in the 300-200 nm range. The methods aimed to improve the present quality is also briefly discussed together with the capability of the CVD system to grow single-crystal specimens.File | Dimensione | Formato | |
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