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Author: search.filters.author.Thaiyotin, L.

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    Photoconductor diamond film detector
    (2008-10-06)
    Jesen, S.
    ;
    Thaiyotin, L.
    ;
    Cheirsirikul, S.
    ;
    Phetchakul, T.
    Diamond film was synthesized on a silicon substrate by MPCVD (Microwave Plasma Chemical Vapor Deposition) process and used to fabricate a photoconductor for the detection of UV light. The photoconductor was fabricated on free standing diamond film and operation in a planar. This paper presents the spectral response of photoconductor, concentration of boron doping, times and temperature. The device shows good response to UV light and a very low response to visible light. Furthermore, the device reveals little change in spectral response with increasing temperature at all wavelengths. © 2008 IEEE.
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    UV photodetector from Schottky diode diamond film
    (2002-03-01)
    Thaiyotin, L.
    ;
    Ratanaudompisut, E.
    ;
    Phetchakul, T.
    ;
    Cheirsirikul, S.
    ;
    Supadech, S.
    Diamond film was synthesized on a silicon substrate by hot-filament CVD and used to fabricate a Schottky photodiode for the detection of UV light. This paper presents an improved structure of photodiode, which reduces the effect of grain boundaries in the polycrystalline diamond film. The Schottky photodiode was fabricated on free-standing diamond film and operation in a vertical direction can be expected to reduce the effect of grain boundaries. The device shows good response to UV light and a very low response to visible light. The dark current is less than 10 pA. The device response time is less than 20 μs. Furthermore, the device reveals little change in spectral response with increasing temperature at all wavelengths. © 2002 Elsevier Science B.V. All rights reserved.
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    UV photodetectors from B-doped diamond film
    (2000-12-01)
    Thaiyotin, L.
    ;
    Phetchakul, T.
    ;
    Cheirsirikul, S.
    ;
    Supadech, S.
    The diamond film synthesized on silicon substrate by hot-filament CVD has been used to fabricate photoconductive and photodiode structures for the detection of UV light. The photoconductive device which the higher boron doped has a greater different response between UV light and visible light more than the lower one, but it has more dark current and response time. The Al schottky photodiode fabricated on the B-doped diamond film showed lower dark current and shorter response time than photoconductive device.
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