Abstract
The composite material based on ZnO microneedles and Alq3 thin film has been obtained. The photoluminescence study shows a tenfold enhancement in the band-edge UV emission (390 nm) of ZnO microneedles and 2 × enhancement in visible emission of the hybrid composite, when excited by 266 nm laser beam. This enhancement can be explained by the interaction between ZnO and Alq3 molecules and the energy transfer from ZnO to Alq3 molecule. Discussed composite structures can find interesting applications as emitting layers in OLED devices.
Highlights
Organic light-emitting diode (OLED) technologies are at the center of attention of scientists working in the field of optoelectronics, due to their wide practical use
We report the data concerning fabrication and luminescent properties of the composite structure based on ZnO microneedles and Alq3 thin film
The composite material based on ZnO microneedles and Alq3 thin film has been obtained
Summary
Organic light-emitting diode (OLED) technologies are at the center of attention of scientists working in the field of optoelectronics, due to their wide practical use. Tris(8-hydroxyquinoline)aluminium (Alq3) is a very stable and widely used electron-transport and light emitting material in organic optoelectronic devices [4]. This material is thermally stable, has a high glasstransition temperature of 172°C, and can be thermally deposited to form pin hole–free amorphous thin films due to its intrinsic polymorphic phase behavior [5]. We report the data concerning fabrication and luminescent properties of the composite structure based on ZnO microneedles and Alq thin film
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