Quantifying the efficiency of Förster-assisted optical gain in semiconducting polymer blends by excitation wavelength selective amplified spontaneous emission

Wu, Longfei and Luo, Feng and Lüer, Larry and Romero, Beatriz and Otón Sánchez, José Manuel and Zhang, Qi and Xia, Ruidong and Cabanillas González, Juan (2016). Quantifying the efficiency of Förster-assisted optical gain in semiconducting polymer blends by excitation wavelength selective amplified spontaneous emission. "Journal of Polymer Science Part B: Polymer Physics", v. 54 ; pp. 2311-2317. ISSN 0887-6266. https://doi.org/10.1002/polb.24141.

Description

Title: Quantifying the efficiency of Förster-assisted optical gain in semiconducting polymer blends by excitation wavelength selective amplified spontaneous emission
Author/s:
  • Wu, Longfei
  • Luo, Feng
  • Lüer, Larry
  • Romero, Beatriz
  • Otón Sánchez, José Manuel
  • Zhang, Qi
  • Xia, Ruidong
  • Cabanillas González, Juan
Item Type: Article
Título de Revista/Publicación: Journal of Polymer Science Part B: Polymer Physics
Date: August 2016
ISSN: 0887-6266
Volume: 54
Subjects:
Freetext Keywords: amplified spontaneous emission, conjugated polymer blends, laser spectroscopy, energy transfer, amorphous materials
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (2MB) | Preview

Abstract

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.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT2014-57652-C2-1-RLAPSENFUNDACION IMDEA NANOCIENCIASensores químicos basados en laseres de polímero conjugado dopados con colorante
Government of SpainPCIN-2015-169-C02-01MOFSENSFUNDACION IMDEA NANOCIENCIASynthesis of Metal-Organic Frameworks as Optical Gas Sensors
Madrid Regional GovernmentS2013/MIT-3007MAD2DUnspecifiedPropiedades fundamentales y aplicaciones del grafeno y otros materiales bidimensionales

More information

Item ID: 48706
DC Identifier: http://oa.upm.es/48706/
OAI Identifier: oai:oa.upm.es:48706
DOI: 10.1002/polb.24141
Official URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/polb.24141
Deposited by: Memoria Investigacion
Deposited on: 20 Jan 2018 09:17
Last Modified: 03 Jun 2019 11:16
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM