Blue‐violet electroluminescence and photocurrent spectra from polycrystalline chemical vapor deposited diamond film
作者:
C. Manfredotti,
F. Wang,
P. Polesello,
E. Vittone,
F. Fizzotti,
A. Scacco,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 67,
issue 23
页码: 3376-3378
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.114898
出版商: AIP
数据来源: AIP
摘要:
We have measured current–voltage characteristic, blue‐violet electroluminescence (EL) and subgap photocurrent spectra of free standing polycrystalline chemical vapor deposited diamond film. The current increases as a power law function of the voltage with an exponent of about 5.5. The EL spectra show a main luminescence band peaked at 3.0 eV, whose intensity increases linearly with the electric current. The photocurrent increases rapidly with the photon energy in the range from 2.0 to 3.5 eV and then tends to saturate. It is found that all these results can be consistently explained in relation to gap states centered at 3.0 eV above the valence band. ©1995 American Institute of Physics.
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