Artículos en revistas:
Quantifying the Efficiency of Förster-Assisted Optical Gain in Semiconducting Polymer Blends by Excitation Wavelength Selective Amplified Spontaneous Emission
Quantifying the Efficiency of Förster-Assisted Optical Gain in Semiconducting Polymer Blends by Excitation Wavelength Selective Amplified Spontaneous Emission
Año:2016
Áreas de investigación
-
Física química y matemáticas
Datos
|
Descripción
|
|
|---|---|
| We study the correlation between Förster resonance energy transfer (FRET) and optical gain properties in conjugated polymer blends based on regioregular poly(3-hexylthiophene) (P3HT) and poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT). First, FRET dynamics are investigated with femtosecond transient absorption spectroscopy observing a sub-picosecond energy transfer from F8BT to P3HT (550 fs) at medium doping levels (40% wt P3HT in F8BT). Amplified spontaneous emission (ASE) is then characterized in blends upon exciting predominantly the host and guest polymers, respectively. The corresponding density of absorbed photons at threshold conditions is compared upon host or guest photoexcitation as a method to quantitatively determine the FRET-assisted ASE efficiencies. We observe a reduction in ASE efficiency upon host photoexcitation of 20%, in the best case, respect to guest photoexcitation. Our results confirm that even in strongly coupled host:guest mixtures delayed exciton population by energy transfer is subtle to losses ascribed to exciton-exciton annihilation. | |
|
Internacional
|
Si |
|
JCR del ISI
|
Si |
|
Título de la revista
|
Journal of Polymer Science Part B: Polymer Physics |
|
ISSN
|
0887-6266 |
|
Factor de impacto JCR
|
3,83 |
|
Información de impacto
|
|
|
Volumen
|
54 |
|
DOI
|
10.1002/polb.24141 |
|
Número de revista
|
|
|
Desde la página
|
2311 |
|
Hasta la página
|
2317 |
|
Mes
|
AGOSTO |
|
Ranking
|
|
Ver publicación en Archivo digital upm
Participantes
- Autor: Longfei Wu (UPM)
- Autor: Feng Luo
- Autor: Larry Lüer
- Autor: Beatriz Romero
- Autor: Jose Manuel Oton Sanchez (UPM)
- Autor: Qi Zhang
- Autor: Ruidong Xia
- Autor: Juan Cabanillas Gonzalez
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
- Creador: Departamento: Tecnología Fotónica y Bioingeniería
S2i 2023 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)