This work reports on the development and characterization of bi-dimensional deep-UV sensor arrays based on synthetic diamond to address the requirements of space-born astrophysical experiments. The material was synthesized at the University of Rome "Tor Vergata" where both heteroepitaxial polycrystalline diamond films and homoepitaxial single-crystal diamonds are grown using a tubular MWCVD reactor. The quality of chemical vapour deposited diamond was characterized by cathodoluminescence, photoluminescence, Raman spectroscopy and thermally stimulated currents. Then, suitable samples were selected and used to fabricate photoconductive single-pixel and 2D array devices by evaporating metal contacts on the growth surface. The electro-optical characterization of the devices was carried out in a wide spectral region, ranging from 120 to 2400 nm. A deuterium lamp and a 0.5 m vacuum monochromator were used to measure the detector responsivity under continuous monochromatic irradiation in the 120-250 nm spectral range, while an optical parametric oscillator tunable laser producing 5 ns pulses was used as light source from 210 up to 2400 nm. Time response, signal-to-noise ratio, responsivity and visible rejection factor were evaluated and the results are hereafter summarized. © 2006 Elsevier B.V. All rights reserved.

Balducci, A., Bruzzi, M., De Sio, A., Donato, M., Faggio, G., Marinelli, M., et al. (2006). Diamond-based photoconductors for deep UV detection. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 567(1 SPEC. ISS.), 188-191 [10.1016/j.nima.2006.05.159].

Diamond-based photoconductors for deep UV detection

MARINELLI, MARCO;MILANI, ENRICO;VERONA RINATI, GIANLUCA
2006

Abstract

This work reports on the development and characterization of bi-dimensional deep-UV sensor arrays based on synthetic diamond to address the requirements of space-born astrophysical experiments. The material was synthesized at the University of Rome "Tor Vergata" where both heteroepitaxial polycrystalline diamond films and homoepitaxial single-crystal diamonds are grown using a tubular MWCVD reactor. The quality of chemical vapour deposited diamond was characterized by cathodoluminescence, photoluminescence, Raman spectroscopy and thermally stimulated currents. Then, suitable samples were selected and used to fabricate photoconductive single-pixel and 2D array devices by evaporating metal contacts on the growth surface. The electro-optical characterization of the devices was carried out in a wide spectral region, ranging from 120 to 2400 nm. A deuterium lamp and a 0.5 m vacuum monochromator were used to measure the detector responsivity under continuous monochromatic irradiation in the 120-250 nm spectral range, while an optical parametric oscillator tunable laser producing 5 ns pulses was used as light source from 210 up to 2400 nm. Time response, signal-to-noise ratio, responsivity and visible rejection factor were evaluated and the results are hereafter summarized. © 2006 Elsevier B.V. All rights reserved.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01 - Fisica Sperimentale
English
Array; Diamond; Photoconductor; UV; Instrumentation; Nuclear and High Energy Physics
Balducci, A., Bruzzi, M., De Sio, A., Donato, M., Faggio, G., Marinelli, M., et al. (2006). Diamond-based photoconductors for deep UV detection. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 567(1 SPEC. ISS.), 188-191 [10.1016/j.nima.2006.05.159].
Balducci, A; Bruzzi, M; De Sio, A; Donato, M; Faggio, G; Marinelli, M; Messina, G; Milani, E; Morgada, M; Pace, E; Pucella, G; Santangelo, S; Scoccia, M; Scuderi, S; Tucciarone, A; VERONA RINATI, G
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/131510
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