All solution-processed red organic light-emitting diode based on a new thermally cross-linked heteroleptic Ir(iii) complex

Woosum Cho, Saripally Sudhaker Reddy, Junyoung Kim, Young-Rae Cho, Sung-Ho Jin

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28 Citations (Scopus)


A novel cross-linkable red iridium(iii) complex and electron transport material were designed and synthesized for use in the fabrication of solution-processed phosphorescent organic light-emitting diodes (PHOLEDs). The newly cross-linkable red Ir(iii) complex was successfully thermal cross-linked with a cross-linkable host in the emitting layer (EML). After cross-linking, the EML was found not to be damaged by organic solvents. A maximum external quantum efficiency (EQE) of 4.64% (2.77 cd A-1) was achieved for deep-red PHOLEDs after rinsing, which was similar to the EQE of 4.59% (2.52 cd A-1) after rinsing the deep-red PHOLEDs with thermal cross-linking.

Original languageEnglish
Pages (from-to)11714-11721
Number of pages8
JournalJournal of Materials Chemistry C
Issue number43
Publication statusPublished - 23 Oct 2018
Externally publishedYes

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