Phosphorescent Light-Emitting Transistors: Harvesting Triplet Excitons

Ebinazar B. Namdas, Ben B. Y. Hsu, Zehua Liu, Shih-Chun Lo, Paul L. Burn, Ifor D. W. Samuel

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

Phosphorescent light-emitting transistors, in which light emission from singlet and triplet energy levels is harvested using solution-processed materials (see figure), are presented. While a green phosphorescent dendrimer exhibits an external quantum efficiency of 0.45% at 480 cd m(-2), a red polymer/phosphorescent small-molecule blend produces a brightness exceeding 30 cd m(-2) with a relatively high hole mobility of 2.5 x 10(-2) cm(2) V-1 s(-1).

Original languageEnglish
Pages (from-to)4957-4961
Number of pages5
JournalAdvanced Materials
Volume21
Issue number48
DOIs
Publication statusPublished - 28 Dec 2009

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