Journal article

Triplet fusion upconversion using sterically protected 9,10-diphenylanthracene as the emitter

Can Gao, Bolong Zhang, Christopher R Hall, Li Li, Yeqin Chen, Yi Zeng, Trevor A Smith, Wallace WH Wong

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | ROYAL SOC CHEMISTRY | Published : 2020

Abstract

Improving the efficiency of triplet fusion upconversion (TF-UC) in the solid-state is still challenging due to the aggregation and phase separation of chromophores. In this work, two 9,10-diphenylanthracene (DPA) derivatives based on the modification of the 9,10-phenyl rings with bulky isopropyl groups (bDPA-1 and bDPA-2) were used as emitters. By using platinum octaethylporphyrin (PtOEP) as the sensitizer, TF-UC performance was comprehensively investigated in 3 media: toluene solution, polyurethane thin film and nano/micro-crystals in a polyvinyl alcohol matrix. Only a small difference in upconversion efficiency between the bulky DPAs and the DPA reference was observed in toluene solution a..

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Grants

Awarded by Australian Research Council through the ARC Centre of Excellence in Exciton Science


Awarded by International Mobility of Researchers project


Funding Acknowledgements

This work was made possible by support from the Australian Research Council through the ARC Centre of Excellence in Exciton Science (CE170100026). WWHW and CG are further supported by Australian Renewable Energy Agency which funds the Australian Centre for Advanced Photovoltaics (ACAP). MD acknowledges International Mobility of Researchers project No. CZ.02.2.69/0.0/0.0/16_027/0008465. CG acknowledges the Albert Shimmins Fund from the University of Melbourne.