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Molecular Crystals and Liquid Crystals Volume 758, 2023 - Issue 1
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Low-Dimensional Solids and Molecular Crystals

Sol-gel-derived zinc oxide nanoparticles for electroluminescence enhancement of MEH-PPV OLEDs

M. A. Mohd Sarjidana Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, MalaysiaCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0001-6413-8568View further author information
ORCID Icon,
A. K. Roslia Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, MalaysiaView further author information
,
M. S. Zainia Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, MalaysiaORCID Iconhttps://orcid.org/0000-0003-3155-6995View further author information
ORCID Icon,
M. A. Nordina Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, MalaysiaView further author information
,
S. M. Hafizb Flexible Electronics Lab, Wireless Communication and Sensor Technology Division, R&D Department, MIMOS Berhad, Kuala Lumpur, MalaysiaView further author information
&
W. H. Abd Majida Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur, MalaysiaCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0001-8273-5892View further author information
ORCID Icon
Pages 71-79 | Published online: 05 Dec 2022
 
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Abstract

The work aims to evaluate the impact of zinc oxide nanoparticles (ZnO-NPs) in the electroluminescence enhancement of organic light-emitting diodes (OLEDs). ZnO-NP was synthesized by using the sol-gel method. XRD, optical, and photoluminescence analysis indicate the average crystallite size of the ZnO-NP is 8.19 nm, exhibits a high energy band gap of 4.15 eV, and high luminescence at 530 nm. OLED performance analysis revealed that the ZnO-NP significantly improves the luminescence brightness and device efficiency by acting as an electron transport and hole-blocking layer, which promotes a high number of electron-hole accumulation in the emissive layer.

Additional information

Funding

The work was supported by the Ministry of Higher Education Malaysia under the Fundamental Research Grant Scheme (FRGS/1/2019/STG02/UM/01/2) and Universiti Malaya under the Impact-oriented Interdisciplinary Research Grant (IIRG) (IIRG007B-19FNW).

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