TY - JOUR
T1 - Bias-voltage-induced decomposition of 2-methyl-1,4-naphthoquinone on Ag/AlOx/Al tunnel junction
AU - Wadayama, T.
AU - Kojim, A.
AU - Hatta, A.
PY - 2004/12
Y1 - 2004/12
N2 - Bias-voltage-induced decomposition of 2-methyl-1,4-naphthoquinone (MeNQ) dispersed in polystyrene on an Ag/AlOx/Al tunnel junction is examined using IR reflection absorption spectroscopy. Under no bias voltage, IR bands due to MeNQ decrease only slightly. In contrast, when the Ag electrode is biased to - 2.8 eV, which corresponds to the electronic absorption edge of MeNQ, the IR bands of MeNQ are significantly decreased in intensity. Bias voltages of + 2.8 eV and ±1.5 eV promote the band-intensity reduction less. These results reveal that hot holes with appropriate energies promote the decomposition of MeNQ on the tunnel junction.
AB - Bias-voltage-induced decomposition of 2-methyl-1,4-naphthoquinone (MeNQ) dispersed in polystyrene on an Ag/AlOx/Al tunnel junction is examined using IR reflection absorption spectroscopy. Under no bias voltage, IR bands due to MeNQ decrease only slightly. In contrast, when the Ag electrode is biased to - 2.8 eV, which corresponds to the electronic absorption edge of MeNQ, the IR bands of MeNQ are significantly decreased in intensity. Bias voltages of + 2.8 eV and ±1.5 eV promote the band-intensity reduction less. These results reveal that hot holes with appropriate energies promote the decomposition of MeNQ on the tunnel junction.
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U2 - 10.1007/s00339-004-2986-2
DO - 10.1007/s00339-004-2986-2
M3 - Article
AN - SCOPUS:6344243048
SN - 0947-8396
VL - 79
SP - 1891
EP - 1894
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
IS - 8
ER -