Enhancement of photosensitivity by ultraviolet irradiation and photoconductivity spectra of diamond thin films

The evolution of photocurrent in time under ultraviolet (UV) irradiation of free-standing diamond thin films, prepared by chemical vapor deposition method, have been observed. A significant enhancement of the photosensitivity in visible-near-infrared region of UV illuminated samples have been obtain...

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Bibliographic Details
Published in:Applied physics letters 1993-05, Vol.62 (19), p.2384-2386
Main Authors: VAITKUS, R, INUSHIMA, T, YAMAZAKI, S
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic transport in condensed matter
Exact sciences and technology
Photoconduction and photovoltaic effects
photodielectric effects
Physics
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Summary:The evolution of photocurrent in time under ultraviolet (UV) irradiation of free-standing diamond thin films, prepared by chemical vapor deposition method, have been observed. A significant enhancement of the photosensitivity in visible-near-infrared region of UV illuminated samples have been obtained. The linear dependence of relative change of photocurrent on UV radiant intensity have been found. The photoconductivity spectra have been investigated in the energy range 1–6.2 eV. The results of investigation have shown that diamond thin films possess similar properties as radiation damaged crystalline diamond.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.109372