Metasurface electrode light emitting diodes with planar light control

Yeonsang Park, Jineun Kim, Kyung Sang Cho, Hyochul Kim, Min Kyung Lee, Jae Soong Lee, Un Jeong Kim, Sung Woo Hwang, Mark L. Brongersma, Young Geun Roh, Q. Han Park

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The ability of metasurfaces to manipulate light at the subwavelength scale offers unprecedented functionalities for passive and active lasing devices. However, applications of metasurfaces to optical devices are rare due to fabrication difficulties. Here, we present quantum dot light emitting diodes (QDLEDs) with a metasurface-integrated metal electrode and demonstrate microscopically controlled LED emission. By incorporating slot-groove antennas into the metal electrode, we show that LED emission from randomly polarized QD sources can be polarized and directed at will. Utilizing the relation between polarization and emission direction, we also demonstrate microscopic LED beam splitting through the selective choice of polarization.

Original languageEnglish
Article number14753
JournalScientific reports
Issue number1
Publication statusPublished - 2017 Dec 1

ASJC Scopus subject areas

  • General


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