A study of the charge collection properties of polycrystalline CVD diamond with synchrotron radiation

Polycrystalline CVD diamond samples have been prepared with different electrode configurations, allowing to produce an electric field parallel and perpendicular to the direction of the grain boundaries. A photon beam with an energy of 15 keV was used to study the response with a spatial resolution o...

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Veröffentlicht in:	Diamond and related materials 2011-03, Vol.20 (3), p.398-402
Hauptverfasser:	Oh, Alexander, Wengler, Thorsten, Ahmed, Mahfuza, Da Via, Cinzia, Watts, Stephen
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemical vapor deposition Chemical vapor deposition (including plasma-enhanced cvd, mocvd, etc.) Collection Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Detector Electrodes Energy use Exact sciences and technology Film thickness Fullerenes and related materials diamonds, graphite General equipment and techniques Grain boundaries Induced-current Instruments, apparatus, components and techniques common to several branches of physics and astronomy Materials science Methods of deposition of films and coatings film growth and epitaxy Photon beams Physics Sensors (chemical, optical, electrical, movement, gas, etc.) remote sensing Specific materials Structure and morphology thickness Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties) Synchrotron radiation Thin film structure and morphology
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Zusammenfassung:	Polycrystalline CVD diamond samples have been prepared with different electrode configurations, allowing to produce an electric field parallel and perpendicular to the direction of the grain boundaries. A photon beam with an energy of 15 keV was used to study the response with a spatial resolution of about 7 μm. Results on the influence of the field direction on the signal, the pumping effect, and the signal response as a function of the film thickness were obtained. ► Measurement of charge transport perpendicular to growth direction in pCVD diamond. ► Spatially resolved measurement of priming effect. ► Comparative study of charge collection with different electric field configurations.
ISSN:	0925-9635 1879-0062
DOI:	10.1016/j.diamond.2011.01.042