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Molecular Crystals and Liquid Crystals Volume 635, 2016 - Issue 1: 2015 KJF International Conference on Organic Materials for Electronics and Photonics (KJF-ICOMEP 2015)
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Original Articles

Enhanced out-coupling efficiency in OLEDs using ZnS nanodots

Il-Ji BaeKorea Printed Electronics Center, Korea Electronics Technology Institute, Jeonju, Korea
,
Dasom SongKorea Printed Electronics Center, Korea Electronics Technology Institute, Jeonju, Korea;Department of Flexible and Printable Electronics, Chonbuk National University, Jeonju, Korea
,
Dang Mo YoonDivision of Microelectronics and Display Technology, Wonkwang University, Iksan, Korea
,
Deepak GhimireKorea Printed Electronics Center, Korea Electronics Technology Institute, Jeonju, Korea
,
Miyoung KimKorea Printed Electronics Center, Korea Electronics Technology Institute, Jeonju, KoreaCorrespondence[email protected] [email protected]
,
Bum-Joo LeeKorea Printed Electronics Center, Korea Electronics Technology Institute, Jeonju, Korea
,
Byung Yun JooSchool of Mechanical Engineering, Korea University of Technology & Education, Cheonan, Korea
,
Ju Hwan ChoiKorea Printed Electronics Center, Korea Electronics Technology Institute, Jeonju, Korea
,
Jin-Koog ShinKorea Printed Electronics Center, Korea Electronics Technology Institute, Jeonju, Korea
&
Jae-Wook KangDepartment of Flexible and Printable Electronics, Chonbuk National University, Jeonju, KoreaCorrespondence[email protected] [email protected]
 show all
Pages 181-189 | Published online: 01 Nov 2016
 
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ABSTRACT

We demonstrated highly efficient OLEDs by incorporating ZnS nanodots on top of a glass substrate via a chemical bath deposition process. The device efficiency of OLEDs with ZnS nanodot arrays was 1.26 times higher than that of OLEDs without ZnS. This enhancement in device efficiency is attributed to the improved light out-coupling efficiency that is enabled by the improved optical performance of nanodot arrays, which results from their high refractive index and optical transmittance in the visible wavelength.

Acknowledgments

This research was supported by the Fusion and Complex Technique Development Project (S2171611), by the Jeonbuk Research & Development Program funded by Jeonbuk Province (20140310-A-001), and in part by the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning (NRF-2014R1A1A1003341).

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