ArticleJournal of fluorescence2026
Enhanced Photophysical and Optical Properties of CsPbCl₃@Poly(9,9-dioctylfluorene) Nanocomposite Films: A New Material for Violet-Blue OLED Phototherapy Applications.
Article in Journal of fluorescence, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Polymer nanocomposite films were fabricated by spin coating blends of the conjugated polymer poly(9,9-dioctylfluorene) (PFO) with CsPbCl3 perovskite quantum dots (PQDs) over a concentration range of 1 to 15 wt%. Transmission electron microscopy (TEM) reveals uniform cubic CsPbCl₃ PQDs with a mean edge length of 8 ± 1.1 nm, while X-ray diffraction (XRD) confirms the amorphous structure of all CsPbCl₃@PFO nanocomposites, characterized by dominant α-phase PFO conformation with minimal β-phase content. Photophysical characterization demonstrates that systematic doping with CsPbCl₃ PQDs significantly enhances three critical properties of PFO nanocomposites: efficient Förster resonance energy transfer (FRET), photoluminescence quantum yield (PLQY) improved from 46% (pure PFO) to 63% at the optimal 8 wt% doping level, and CIE 1976 violet-blue color tunability. Thermal stability of all films for operational OLED conditions was evaluated under ISOS-D-2 protocols by monitoring α-phase fluorescence decay at 70 °C for 24 h. The results demonstrated the potential of PQDs to stabilize CsPbCl₃@PFO nanocomposites under extreme operational conditions simulating KSA arid climates, enabling durable violet-blue OLEDs for medical phototherapy and sustainable, energy-efficient lighting technologies.
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