An easy approach to control β-phase formation in PFO films for optimized emission properties

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Zhang, Qi and Chi, Lang and Hai, Gang and Fang, Yueting and Li, Xiangchun and Xia, Ruidong and Huang, Wei and Gu, Erdan (2017) An easy approach to control β-phase formation in PFO films for optimized emission properties. Molecules. 315. ISSN 1420-3049 (https://doi.org/10.3390/molecules22020315)

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Abstract

We demonstrate a novel approach to control β-phase content generated in poly(9,9-dioctylfluorene) (PFO) films. A very small amount of paraffin oil was used as the additive to the PFO solution in toluene. The β-phase fraction in the spin-coated PFO films can be modified from 0% to 20% simply by changing the volume percentage of paraffin oil in the mixed solution. Organic light emitting diodes (OLEDs) and amplified spontaneous emission (ASE) study confirmed low β-phase fraction promise better OLEDs device, while high β-phase fraction benefits ASE performance.

ORCID iDs

Zhang, Qi, Chi, Lang, Hai, Gang, Fang, Yueting, Li, Xiangchun, Xia, Ruidong, Huang, Wei and Gu, Erdan ORCID logoORCID: https://orcid.org/0000-0002-7607-9902;
CORE (COnnecting REpositories)