Abstract
We report a study of the photophysics of solutions and films of the conjugated polymer poly(3-hexylthiophene) (P3HT). We have performed measurements of absorption, photoluminescence (PL), PL quantum yield, and time-resolved PL. For P3HT in a good solvent the PL decays with a time constant of 510±20 ps, and the PL quantum yield is 0.42±0.04. we assign the PL to the intra-chain singlet exciton, and deduce a natural radiative lifetime for this species of 1.2±0.1 ns. We explore the use of solvent mixture as a way of controlling the degree of intermolecular interaction. We find that there is a red-shift of absorption and PL in poor solvent mixtures, and the spectra and PL quantum yield become similar to the film. The PL decay becomes faster and non-exponential in poor solvent mixtures and the thin film.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Editors | Z.V. Vardeny, L.J. Rothberg |
| Pages | 163-170 |
| Number of pages | 8 |
| Volume | 3145 |
| DOIs | |
| Publication status | Published - 1997 |
| Event | Optical Probes of Conjugated Polymers - San Diego, CA, United States Duration: Jul 28 1997 → Jul 30 1997 |
Other
| Other | Optical Probes of Conjugated Polymers |
|---|---|
| Country | United States |
| City | San Diego, CA |
| Period | 7/28/97 → 7/30/97 |
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Keywords
- Photoluminescence
- Poly(3-hexylthiophene)
- Quantum yield
- Singlet exciton
- Solvatochromism
- Time-resolved spectroscopy
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Photoluminescence in poly(3-hexylthiophene). / Samuel, Ifor D W; Magnani, Laura; Rumbles, Gary; Murray, Ken; Stone, Bradley M.; Moratti, Stephen C.; Holmes, Andrew B.
Proceedings of SPIE - The International Society for Optical Engineering. ed. / Z.V. Vardeny; L.J. Rothberg. Vol. 3145 1997. p. 163-170.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Photoluminescence in poly(3-hexylthiophene)
AU - Samuel, Ifor D W
AU - Magnani, Laura
AU - Rumbles, Gary
AU - Murray, Ken
AU - Stone, Bradley M.
AU - Moratti, Stephen C.
AU - Holmes, Andrew B.
PY - 1997
Y1 - 1997
N2 - We report a study of the photophysics of solutions and films of the conjugated polymer poly(3-hexylthiophene) (P3HT). We have performed measurements of absorption, photoluminescence (PL), PL quantum yield, and time-resolved PL. For P3HT in a good solvent the PL decays with a time constant of 510±20 ps, and the PL quantum yield is 0.42±0.04. we assign the PL to the intra-chain singlet exciton, and deduce a natural radiative lifetime for this species of 1.2±0.1 ns. We explore the use of solvent mixture as a way of controlling the degree of intermolecular interaction. We find that there is a red-shift of absorption and PL in poor solvent mixtures, and the spectra and PL quantum yield become similar to the film. The PL decay becomes faster and non-exponential in poor solvent mixtures and the thin film.
AB - We report a study of the photophysics of solutions and films of the conjugated polymer poly(3-hexylthiophene) (P3HT). We have performed measurements of absorption, photoluminescence (PL), PL quantum yield, and time-resolved PL. For P3HT in a good solvent the PL decays with a time constant of 510±20 ps, and the PL quantum yield is 0.42±0.04. we assign the PL to the intra-chain singlet exciton, and deduce a natural radiative lifetime for this species of 1.2±0.1 ns. We explore the use of solvent mixture as a way of controlling the degree of intermolecular interaction. We find that there is a red-shift of absorption and PL in poor solvent mixtures, and the spectra and PL quantum yield become similar to the film. The PL decay becomes faster and non-exponential in poor solvent mixtures and the thin film.
KW - Photoluminescence
KW - Poly(3-hexylthiophene)
KW - Quantum yield
KW - Singlet exciton
KW - Solvatochromism
KW - Time-resolved spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=0031289247&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031289247&partnerID=8YFLogxK
U2 - 10.1117/12.279277
DO - 10.1117/12.279277
M3 - Conference contribution
VL - 3145
SP - 163
EP - 170
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Vardeny, Z.V.
A2 - Rothberg, L.J.
ER -