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Investigation of Chemical-Vapour-Deposition Diamond Alpha-Particle Detectors |
| GU Bei-Bei;WANG Lin-Jun;ZHANG Ming-Long;XIA Yi-Ben |
| School of Materials Science and Engineering, Shanghai University, Shanghai 200072 |
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| Cite this article: |
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GU Bei-Bei, WANG Lin-Jun, ZHANG Ming-Long et al 2004 Chin. Phys. Lett. 21 2051-2053 |
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Abstract Diamond films with [100] texture were prepared by a hot-filament chemical vapour deposition technique to fabricate particle detectors. The response of detectors to 5.5MeV241Am particles is studied. The photocurrent increases linearly and then levels off with voltage, and 7nA is obtained at bias voltage of 100V. The time-dependent photocurrent initially increases rapidly and then tends to reach saturation. Furthermore, a little increase of the dark-current after irradiation can be accounted for by the release of the charges captured by the trapping centres at low energy levels during irradiation. An obvious peak of the pulse height distribution can be observed, associated with the energy of 5.5MeV.
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| Keywords:
85.30.De
81.15.Gh
29.40.Wk
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Published: 01 October 2004
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| PACS: |
85.30.De
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(Semiconductor-device characterization, design, and modeling)
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81.15.Gh
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(Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.))
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29.40.Wk
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(Solid-state detectors)
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