Large Enhancement of Photoluminescence Obtained in Thin Polyfluorene Films of Optimized Microstructure-Reference-Cited by-同舟云学术

Large Enhancement of Photoluminescence Obtained in Thin Polyfluorene Films of Optimized Microstructure

Published:2024-08-11 Issue:16 Volume:16 Page:2278
ISSN:2073-4360
Container-title:Polymers
language:en
Short-container-title:Polymers

Author:

Todor-Boer Otto¹^ORCID,Farcău Cosmin²³^ORCID,Botiz Ioan³⁴

Affiliation:

1. Research Institute for Analytical Instrumentation Subsidiary, National Institute for Research and Development of Optoelectronics Bucharest INOE 2000, 67 Donath Street, 400293 Cluj-Napoca, Romania

2. National Institute for Research and Development of Isotopic and Molecular Technologies INCDTIM, 67-103 Donath Street, 400293 Cluj-Napoca, Romania

3. Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania

4. Department of Physics of Condensed Matter and Advanced Technologies, Faculty of Physics, Babeș-Bolyai University, 400084 Cluj-Napoca, Romania

Abstract

There is a clearly demonstrated relationship between the microstructure, processing and resulting optoelectronic properties of conjugated polymers. Here, we exploited this relationship by exposing polyfluorene thin films to various solvent vapors via confined-solvent vapor annealing to optimize their microstructure, with the final goal being to enhance their emission properties. Our results have demonstrated enlargements in photoluminescence intensity of up to 270%, 258% and 240% when thin films of polyfluorenes of average molecular weights of 105,491 g/mol, 63,114 g/mol and 14,000 g/mol, respectively, experienced increases in their β-phase fractions upon processing.

Publisher

MDPI AG

Link

https://www.mdpi.com/2073-4360/16/16/2278/pdf

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