Abstract
We report time-resolved measurements of photoluminescence in poly(p-phenylenevinylene) (PPV) and related polymers, using the technique of time-correlated single photon counting. We find the photoluminescence is longer lived in less-conjugated samples, and that this accounts for the higher efficiency of light-emitting devices made from less-conjugated materials. At low temperatures, the luminescence is longer lived, and at 77 K there is an interesting red shift of the emission during the first nanoseconds after photoexcitation. We consider that this arises from migration of excitons to more-conjugated (and therefore lower energy) regions of the sample.
| Original language | English |
|---|---|
| Pages (from-to) | 281-288 |
| Number of pages | 8 |
| Journal | Synthetic Metals |
| Volume | 54 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - Mar 1 1993 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Materials Chemistry
- Polymers and Plastics
Cite this
Time-resolved luminescence measurements in poly(p-phenylenevinylene). / Samuel, I. D W; Crystall, B.; Rumbles, Gary; Burn, P. L.; Holmes, A. B.; Friend, R. H.
In: Synthetic Metals, Vol. 54, No. 1-3, 01.03.1993, p. 281-288.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Time-resolved luminescence measurements in poly(p-phenylenevinylene)
AU - Samuel, I. D W
AU - Crystall, B.
AU - Rumbles, Gary
AU - Burn, P. L.
AU - Holmes, A. B.
AU - Friend, R. H.
PY - 1993/3/1
Y1 - 1993/3/1
N2 - We report time-resolved measurements of photoluminescence in poly(p-phenylenevinylene) (PPV) and related polymers, using the technique of time-correlated single photon counting. We find the photoluminescence is longer lived in less-conjugated samples, and that this accounts for the higher efficiency of light-emitting devices made from less-conjugated materials. At low temperatures, the luminescence is longer lived, and at 77 K there is an interesting red shift of the emission during the first nanoseconds after photoexcitation. We consider that this arises from migration of excitons to more-conjugated (and therefore lower energy) regions of the sample.
AB - We report time-resolved measurements of photoluminescence in poly(p-phenylenevinylene) (PPV) and related polymers, using the technique of time-correlated single photon counting. We find the photoluminescence is longer lived in less-conjugated samples, and that this accounts for the higher efficiency of light-emitting devices made from less-conjugated materials. At low temperatures, the luminescence is longer lived, and at 77 K there is an interesting red shift of the emission during the first nanoseconds after photoexcitation. We consider that this arises from migration of excitons to more-conjugated (and therefore lower energy) regions of the sample.
UR - http://www.scopus.com/inward/record.url?scp=0027553785&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027553785&partnerID=8YFLogxK
U2 - 10.1016/0379-6779(93)91071-9
DO - 10.1016/0379-6779(93)91071-9
M3 - Article
VL - 54
SP - 281
EP - 288
JO - Synthetic Metals
JF - Synthetic Metals
SN - 0379-6779
IS - 1-3
ER -