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Photoluminescence Dynamics of Aluminumquinoline/Oxadiazole Multilayer Structures
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Photoluminescence (PL) dynamics of aluminumquinoline/oxadiazole
(Alq3/PBD) multilayer structures,
which may possess a carrier confinement type-I energy lineup,
has been investigated by time-resolved PL spectroscopy
with a mode-locked Ti-sapphire laser. The decay time of the emission from PBD in the multilayer structure
was as fast as several picoseconds, in contrast to that from a PBD single layer, 1.7 ns,
and tended to increase with an increase in PBD thickness.
For the emission from Alq3, on the other hand,
only a slight increase in the decay time was observed
in the multilayer structure compared to a single layer.
These results indicate the rapid energy transfer from PBD to Alq3,
similar to that in semiconductor quantum well structures
with the type-I energy lineup.
Title: Photoluminescence Dynamics of Aluminumquinoline/Oxadiazole Multilayer Structures
Description:
Photoluminescence (PL) dynamics of aluminumquinoline/oxadiazole
(Alq3/PBD) multilayer structures,
which may possess a carrier confinement type-I energy lineup,
has been investigated by time-resolved PL spectroscopy
with a mode-locked Ti-sapphire laser.
The decay time of the emission from PBD in the multilayer structure
was as fast as several picoseconds, in contrast to that from a PBD single layer, 1.
7 ns,
and tended to increase with an increase in PBD thickness.
For the emission from Alq3, on the other hand,
only a slight increase in the decay time was observed
in the multilayer structure compared to a single layer.
These results indicate the rapid energy transfer from PBD to Alq3,
similar to that in semiconductor quantum well structures
with the type-I energy lineup.
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