Photoluminescence in poly(3-hexylthiophene)

Ifor D W Samuel; Laura Magnani; Gary Rumbles; Ken Murray; Bradley M. Stone; Stephen C. Moratti; Andrew B. Holmes

doi:10.1117/12.279277

Photoluminescence in poly(3-hexylthiophene)

Ifor D W Samuel, Laura Magnani, Gary Rumbles, Ken Murray, Bradley M. Stone, Stephen C. Moratti, Andrew B. Holmes

National Renewable Energy Laboratory

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 Citations (Scopus)

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	https://doi.org/10.1117/12.279277
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

Keywords

Photoluminescence
Poly(3-hexylthiophene)
Quantum yield
Singlet exciton
Solvatochromism
Time-resolved spectroscopy

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

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10.1117/12.279277

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Cite this

Samuel, I. D. W., Magnani, L., Rumbles, G., Murray, K., Stone, B. M., Moratti, S. C., & Holmes, A. B. (1997). Photoluminescence in poly(3-hexylthiophene). In Z. V. Vardeny, & L. J. Rothberg (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3145, pp. 163-170) https://doi.org/10.1117/12.279277

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

Samuel, IDW, Magnani, L, Rumbles, G, Murray, K, Stone, BM, Moratti, SC & Holmes, AB 1997, Photoluminescence in poly(3-hexylthiophene). in ZV Vardeny & LJ Rothberg (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 3145, pp. 163-170, Optical Probes of Conjugated Polymers, San Diego, CA, United States, 7/28/97. https://doi.org/10.1117/12.279277

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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.

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