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Issue 14, 2016
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Toward highly efficient blue organic light-emitting diodes: fabricating a good-quality emissive layer cast from suitable solvents

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Abstract

Spin-cast from various solvents, emissive layers show different film morphologies and performances in solution-processed organic light-emitting diodes (OLEDs). Here we fabricated and demonstrated highly efficient blue OLEDs based on bis[3,5-difluoro-2-(2-pyridyl)phenyl]-(2-carboxypyridy)iridium(III) by choosing several kinds of solvents for spin-coating. Experiments indicate that the single-layer device with an emissive film cast from chlorobenzene shows its best performance with a highest current efficiency of 18.99 cd A−1, a maximum luminance of 20.5 × 103 cd m−2 and an emission band centered at 474 nm. The efficiency achieved is the highest reported for solution-processed simple-manufactured OLEDs doped with transition metal phosphors emitting in the blue region.

Graphical abstract: Toward highly efficient blue organic light-emitting diodes: fabricating a good-quality emissive layer cast from suitable solvents

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Publication details

The article was received on 27 Sep 2015, accepted on 06 Nov 2015 and first published on 09 Nov 2015


Article type: Paper
DOI: 10.1039/C5DT03776J
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Citation: Dalton Trans., 2016,45, 6118-6123

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    Toward highly efficient blue organic light-emitting diodes: fabricating a good-quality emissive layer cast from suitable solvents

    D. Ma, L. Duan and Y. Qiu, Dalton Trans., 2016, 45, 6118
    DOI: 10.1039/C5DT03776J

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