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Title: Cascade energy transfer versus charge separation in ladder-type oligo(p-phenylene)/ZnO hybrid structures for light-emitting applications

Usability of inorganic/organic semiconductor hybrid structures for light-emitting applications can be intrinsically limited by an unfavorable interfacial energy level alignment causing charge separation and nonradiative deactivation. Introducing cascaded energy transfer funneling away the excitation energy from the interface by transfer to a secondary acceptor molecule enables us to overcome this issue. We demonstrate a substantial recovery of the light output along with high inorganic-to-organic exciton conversion rates up to room temperature.
Authors:
; ; ; ; ;  [1] ; ;  [2]
  1. Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Newtonstr. 15, 12489 Berlin (Germany)
  2. Institut für Chemie and IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin (Germany)
Publication Date:
OSTI Identifier:
22395499
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALIGNMENT; CONVERSION; DEACTIVATION; ENERGY LEVELS; ENERGY TRANSFER; EXCITATION; INTERFACES; MOLECULES; ORGANIC SEMICONDUCTORS; TEMPERATURE RANGE 0273-0400 K; VISIBLE RADIATION; ZINC OXIDES