TY - JOUR
T1 - Transient uv electroluminescence from poly(p-phenylenevinylene) conjugated polymer induced by strong voltage pulses
AU - Chayet, Haim
AU - Pogreb, Roman
AU - Davidov, Dan
PY - 1997
Y1 - 1997
N2 - We present time-resolved and spectral measurements of electroluminescence from poly((Formula presented) phenylenevinylene) (PPV) thin films upon application of high-voltage pulses. Above some threshold voltage of 100 V, we observe an uv-violet emission centered at 390 nm, in addition to the characteristic yellow-green luminescence of PPV. We explain this emission as being induced by a generation of hot carriers in the strong electric field, which inhibits the formation of singlet excitons and enhances the probability for direct interband transitions of the relaxed carriers.
AB - We present time-resolved and spectral measurements of electroluminescence from poly((Formula presented) phenylenevinylene) (PPV) thin films upon application of high-voltage pulses. Above some threshold voltage of 100 V, we observe an uv-violet emission centered at 390 nm, in addition to the characteristic yellow-green luminescence of PPV. We explain this emission as being induced by a generation of hot carriers in the strong electric field, which inhibits the formation of singlet excitons and enhances the probability for direct interband transitions of the relaxed carriers.
UR - http://www.scopus.com/inward/record.url?scp=0000152177&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.56.R12702
DO - 10.1103/PhysRevB.56.R12702
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AN - SCOPUS:0000152177
SN - 1098-0121
VL - 56
SP - R12702-R12705
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 20
ER -