Thermally Activated Delayed Phosphorescence and Interchromophore Exciton Coupling in a Platinum-Based Organometallic Emitter

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

  • Xu Han
  • Xingli Zou
  • Hsin-Hui Shen
  • Yao Meng
  • Guizheng Zou

Detail(s)

Original languageEnglish
Article number2001023
Journal / PublicationAdvanced Optical Materials
Volume8
Issue number20
Online published26 Jul 2020
Publication statusPublished - 19 Oct 2020

Abstract

The comprehension of triplet exciton mechanisms in organic–inorganic semiconductors has a significant impact on emerging optoelectronic and biosensing technologies. The capability to mutually integrate the photophysical properties of conjugated organic semiconductor with those of well-characterized heavy metals is therefore of utmost importance. Due to heavy-atom effect, the platinum-based triplet emitter, PPtTPtT, achieves highly efficient phosphorescence. Here, it is first demonstrated that π-conjugated PPtTPtT organometallics in electrochemiluminescence (ECL) devices exhibit precisely dual and blueshifted phosphorescence simultaneously induced by thermally activated delayed phosphorescence (TADP) and interchromophore exciton interaction in H-aggregates. Utilizing a combination of photophysical and electrochemical techniques, the distinctive ECL process involving energy sufficient singlet route (S-route), intersystem crossing, as well as triplet relaxation, hereafter called SIT-route, is reported for the first time. The hybrid TADP materials designed with donor–acceptor–donor system enable potential applications, including but not limited to organic light-emitting diodes, light-emitting electrochemical cells, imaging devices, and other bio-related detections.

Research Area(s)

  • molecular design, organometallic emitters, phosphorescent devices, thermally activated delayed phosphorescence, electrochemiluminescence devices

Citation Format(s)

Thermally Activated Delayed Phosphorescence and Interchromophore Exciton Coupling in a Platinum-Based Organometallic Emitter. / Mak, Chun Hong; Liu, Rugeng; Han, Xu; Tang, Yunqi; Zou, Xingli; Shen, Hsin-Hui; Meng, Yao; Zou, Guizheng; Hsu, Hsien-Yi.

In: Advanced Optical Materials, Vol. 8, No. 20, 2001023, 19.10.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review