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Molecules 2017, 22(2), 315; doi:10.3390/molecules22020315

An Easy Approach to Control β-Phase Formation in PFO Films for Optimized Emission Properties

1
Key Laboratory for Organic Electronics & Information Displays (KLOEID), Jiangsu-Singapore Joint Research Center for Organic/Bio Electronics & Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210046, China
2
Jiangsu-Singapore Joint Research Center for Organic/Bio-Electronics & Information Displays, Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
3
Institute of Photonics, University of Strathelyde, 106 Rottenrow, Glasgow, G4 0NW, UK
These authors contribute equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editors: Youngkyoo Kim and Hwajeong Kim
Received: 11 January 2017 / Revised: 7 February 2017 / Accepted: 14 February 2017 / Published: 18 February 2017
(This article belongs to the Special Issue Advances in Organic Nanophotonics)
View Full-Text   |   Download PDF [1486 KB, uploaded 18 February 2017]   |  

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. View Full-Text
Keywords: polymer optoelectronics; poly(9,9-dioctylfluorene); β-phase; amplified spontaneous emission; organic light emitting diode polymer optoelectronics; poly(9,9-dioctylfluorene); β-phase; amplified spontaneous emission; organic light emitting diode
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhang, Q.; Chi, L.; Hai, G.; Fang, Y.; Li, X.; Xia, R.; Huang, W.; Gu, E. An Easy Approach to Control β-Phase Formation in PFO Films for Optimized Emission Properties. Molecules 2017, 22, 315.

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