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Nano Research 2023, 16(5): 7646-7653 https://doi.org/10.1007/s12274-023-5439-y
Research Article | Issue | Published: 10 March 2023

Directional emissions from perovskite nanocrystals thin film enabled by metasurface integration through one step spin-coating process

Show Author's Information Kexue Li1,§,  Xuanyu Zhang2,§,  Peinan Ni3,§,  Juncheng Liu1,  Fengyuan Lin1,  Xu Man1,  Wenfeng Cai2,  Jianxun Liu2,  Yanjun Liu2,  Rui Chen2,  Zhipeng Wei1( )
State Key Laboratory of High Power Semiconductor Laser, School of physics, Changchun University of Science and Technology, Changchun 130022, China
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Photonics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Göteborg, SE-41296, Sweden

§ Kexue Li, Xuanyu Zhang, and Peinan Ni contributed equally to this work.

Keywords:
solid state light source, metasurface integrations, on-chip beam shaping, beam steering, perovskite light-emitting diodes (LEDs)
Topics:
Light emitting diodes
Cite this article:
Li K, Zhang X, Ni P, et al. Directional emissions from perovskite nanocrystals thin film enabled by metasurface integration through one step spin-coating process. Nano Research, 2023, 16(5): 7646-7653. https://doi.org/10.1007/s12274-023-5439-y
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Abstract Full text Electronic supplementary material About this article

Advances in thin film light-emitting devices have fueled the rapid growth of a new class of solid-state lighting devices, featuring low fabrication cost, high quantum efficiency, and broadband spectrum coverage, etc. In contrast to the conventional inorganic semiconductors that rely on lattice matched high crystalline quality substrate, solution processable thin films eliminate the dependence on the substrate, which is highly desired for the ease and versatility of integrations with foreign medium. By taking this advantage, this work developed an ultracompact solution to control the directionality of thin film emitters using integrated dielectric metasurface through one step spin-coating process. As a proof of concept, directional emissions from perovskite nanocrystal thin film, including collimated light emissions and two-dimensional beam steering, are experimentally demonstrated. Notably, our approach, where light emitters were integrated on the back side of substrate after the fabrication of metasurface, judiciously avoids any potential degradation of material optical quality caused by the multi-step nanofabrication. Therefore, it can serve as a generalized scheme to engage the advantageous properties of dielectric metasurface, including the compactness, high efficiency, and beam controllability with the emerging thin film light-emitting diodes (LEDs), which is applicable to a wide range of solution processable materials, including organic light-emitting diodes, quantum-dot light emitting diodes, polymer LEDs, and perovskite LEDs, opening up new pathways to develop low-cost and ultra-compact solid state light sources with versatile beams characteristics.


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Electronic supplementary material
About this article

Directional emissions from perovskite nanocrystals thin film enabled by metasurface integration through one step spin-coating process

Show Author's information Kexue Li1,§, Xuanyu Zhang2,§, Peinan Ni3,§, Juncheng Liu1, Fengyuan Lin1, Xu Man1, Wenfeng Cai2, Jianxun Liu2, Yanjun Liu2, Rui Chen2, Zhipeng Wei1( )
State Key Laboratory of High Power Semiconductor Laser, School of physics, Changchun University of Science and Technology, Changchun 130022, China
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Photonics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Göteborg, SE-41296, Sweden

§ Kexue Li, Xuanyu Zhang, and Peinan Ni contributed equally to this work.

Abstract

Advances in thin film light-emitting devices have fueled the rapid growth of a new class of solid-state lighting devices, featuring low fabrication cost, high quantum efficiency, and broadband spectrum coverage, etc. In contrast to the conventional inorganic semiconductors that rely on lattice matched high crystalline quality substrate, solution processable thin films eliminate the dependence on the substrate, which is highly desired for the ease and versatility of integrations with foreign medium. By taking this advantage, this work developed an ultracompact solution to control the directionality of thin film emitters using integrated dielectric metasurface through one step spin-coating process. As a proof of concept, directional emissions from perovskite nanocrystal thin film, including collimated light emissions and two-dimensional beam steering, are experimentally demonstrated. Notably, our approach, where light emitters were integrated on the back side of substrate after the fabrication of metasurface, judiciously avoids any potential degradation of material optical quality caused by the multi-step nanofabrication. Therefore, it can serve as a generalized scheme to engage the advantageous properties of dielectric metasurface, including the compactness, high efficiency, and beam controllability with the emerging thin film light-emitting diodes (LEDs), which is applicable to a wide range of solution processable materials, including organic light-emitting diodes, quantum-dot light emitting diodes, polymer LEDs, and perovskite LEDs, opening up new pathways to develop low-cost and ultra-compact solid state light sources with versatile beams characteristics.

Keywords: solid state light source, metasurface integrations, on-chip beam shaping, beam steering, perovskite light-emitting diodes (LEDs)

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Publication history
Copyright
Acknowledgements

Publication history

Received: 31 October 2022
Revised: 08 December 2022
Accepted: 21 December 2022
Published: 10 March 2023
Issue date: May 2023

Copyright

© Tsinghua University Press 2023

Acknowledgements

Acknowledgements

This work is supported by the National Natural Science Foundation of China (Nos. 11804335, 61904017, 12074045, and 62174079) and Science, Technology and Innovation Commission of Shenzhen Municipality (Projects Nos. JCYJ20210324120204011 and KQTD2015071710313656). P. N. N. acknowledges the support of H2020 Research and Innovation Program (Marie Skłodowska-Curie Individual Fellowship; Agreement No. 101027383).

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