Enhanced luminescence stability and oxidation–reduction potential of polyfluorene for organic electronics: a review

Chew, Kang Wei; Abdul Rahim, Nor Azura; Teh, Pei Leng; Osman, Azlin Fazlina

doi:10.1007/s00289-023-05096-7

Polym. Bull.

2023

DOI: 10.1007/s00289-023-05096-7

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Enhanced luminescence stability and oxidation–reduction potential of polyfluorene for organic electronics: a review

Kang Wei Chew,

Nor Azura Abdul Rahim,

Pei Leng Teh

et al.

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2024

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Cited by 1 publication

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Optical, Photophysical, and Electroemission Characterization of Blue Emissive Polymers as Active Layer for OLEDs

Tselekidou,

Papadopoulos,

Andrikopoulos

et al. 2024

Nanomaterials

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Polymers containing π-conjugated segments are a diverse group of large molecules with semiconducting and emissive properties, with strong potential for use as active layers in Organic Light-Emitting Diodes (OLEDs). Stable blue-emitting materials, which are utilized as emissive layers in solution-processed OLED devices, are essential for their commercialization. Achieving balanced charge injection is challenging due to the wide bandgap between the HOMO and LUMO energy levels. This study examines the optical and photophysical characteristics of blue-emitting polymers to contribute to the understanding of the fundamental mechanisms of color purity and its stability during the operation of OLED devices. The investigated materials are a novel synthesized lab scale polymer, namely poly[(2,7-di(p-acetoxystyryl)-9-(2-ethylhexyl)-9H-carbazole-4,4′-diphenylsulfone)-co-poly(2,6-diphenylpyrydine-4,4′-diphenylsulfone] (CzCop), as well as three commercially supplied materials, namely Poly(9,9-di-n-octylfluorenyl-2,7-diyl) (PFO), poly[9,9-bis(2′-ethylhexyl) fluorene-2,7-diyl] (PBEHF), and poly (9,9-n-dihexyl-2,7-fluorene-alt-9-phenyl-3,6-carbazole) (F6PC). The materials were compared to evaluate their properties using Spectroscopic Ellipsometry, Photoluminescence, and Atomic Force Microscopy (AFM). Additionally, the electrical characteristics of the OLED devices were investigated, as well as the stability of the electroluminescence emission spectrum during the device’s operation. Finally, the determined optical properties, combined with their photo- and electro-emission characteristics, provided significant insights into the color stability and selectivity of each material.

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Optical, Photophysical, and Electroemission Characterization of Blue Emissive Polymers as Active Layer for OLEDs

Tselekidou,

Papadopoulos,

Andrikopoulos

et al. 2024

Nanomaterials

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Enhanced luminescence stability and oxidation–reduction potential of polyfluorene for organic electronics: a review

Cited by 1 publication

References 79 publications

Optical, Photophysical, and Electroemission Characterization of Blue Emissive Polymers as Active Layer for OLEDs

Optical, Photophysical, and Electroemission Characterization of Blue Emissive Polymers as Active Layer for OLEDs

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