Work

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

Year: 2024

Type: article

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.

Source: Polymers

DOI: 10.3390/polym16162278

Authors: Otto Todor-Boer, Cosmin Farcău, Ioan Botiz

Institutions: Research Institute for Analytical Instrumentation, National Institute of Research and Development for Optoelectronics, Babeș-Bolyai University, National Institute for Research and Development of Isotopic and Molecular Technologies

Language: English

Topic: Organic Light-Emitting Diodes Research

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,069

Funder: Ministerul Cercetării, Inovării şi Digitalizării