journal article·2024-12-10Open access

Enhancing Electron Transport in Polyfluorene-Based PLEDs: The Role of Polystyrene Blending on β-Phase Formation and Phase Separation

Jin Cheng, Ruoyu Jiang, Yuhua Shan, Hong Sun, Shinji Kanehashi, Kenji Ogino

Abstract

To enhance the charge transport performance of poly(9,9-di-n-octylfluorene) (PFO) in polymer light-emitting diodes (PLEDs), the electron transport behaviors of PFO blended with polystyrene (PSt) were investigated. Electron-only (EO) devices were fabricated using a solution process to assess electron transport performance. The results demonstrated that blending PFO with a minority of PSt induced β-phase formation and phase separation upon annealing, contributing to improved electron transport properties. EO measurements revealed that the electron mobility of PFO/PSt blends (PSt: 30wt%, 40%) after annealing was higher than that of pure PFO in both states.
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Research context

OpenAlex topics: Polymer Nanocomposite Synthesis and Irradiation · Organic Electronics and Photovoltaics · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical Engineering and Pharmaceutical Engineering, Changzhou Vocational Institute of Engineering, Changzhou 213164, China

Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China

Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi 184-8588, Japan

Zhejiang Fenghong New-Material Co., Ltd., Huzhou 313300, China

Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi 184-8588, Japan

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