MicroLED-pumped perovskite quantum dot color converter for visible light communications

Leitao, Miguel F.; Islim, Mohamed Sufyan; Yin, Liang; Viola, Shaun; Watson, Scott; Kelly, Anthony E.; Li, X.; Yu, Dejian; Zeng, Haibo; Videv, Stefan; Haas, Harald; Gu, Erdan; Laurand, N.; Dawson, Martin D.

doi:10.1109/ipcon.2017.8116011

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…As emerging light emitters, perovskites have also been investigated as potential light source materials for optical communication, mainly as color converters and electroluminescent emitters [249]. Perovskite nanocrystals (NCs) usually have a short fluorescence decay time, which makes them potential color converters in white light source for optical communication [250][251][252][253][254][255][256][257][258][259]. Dursun et al introduced CsPbBr 3 NCs as a color converter in a visible light communication (VLC) system (figure 25(a)) [250].…”

Section: Statusmentioning

confidence: 99%

Roadmap on perovskite light-emitting diodes

Chen,

Hoye,

Yip

et al. 2024

J. Phys. Photonics

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In recent years, the field of metal-halide perovskite emitters has rapidly emerged as a new community in solid-state lighting. Their exceptional optoelectronic properties have contributed to the rapid rise in external quantum efficiencies (EQEs) in perovskite light-emitting diodes (PeLEDs) from <1% (in 2014) to approaching 30% (in 2023) across a wide range of wavelengths. However, several challenges still hinder their commercialization, including the relatively low EQEs of blue/white devices, limited EQEs in large-area devices, poor device stability, as well as the toxicity of the easily accessible lead components and the solvents used in the synthesis and processing of PeLEDs. This roadmap addresses the current and future challenges in PeLEDs across fundamental and applied research areas, by sharing the community's perspectives. This work will provide the field with practical guidelines to advance PeLED development and facilitate more rapid commercialization.

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Section: Statusmentioning

confidence: 99%

Roadmap on perovskite light-emitting diodes

Chen,

Hoye,

Yip

et al. 2024

J. Phys. Photonics

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“…Moreover, millions of micro-LEDs are available for display applications. Thus, a bottleneck of mass-transfer techniques hinders the practical application of micro-LEDs, necessitating the optimization of traditional mass-transfer technology 35,36 . In addition, the preparation of color-conversion layers for full-color micro-LED displays faces many challenges, such as the patterning and morphology modification of the quantumdot color conversion films (QD-CCF) 37 .…”

Section: Introductionmentioning

confidence: 99%

Applications of lasers: A promising route toward low-cost fabrication of high-efficiency full-color micro-LED displays

Lai,

Liu,

et al. 2023

OES

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Micro-light-emitting diodes (micro-LEDs) with outstanding performance are promising candidates for next-generation displays. To achieve the application of high-resolution displays such as meta-displays, virtual reality, and wearable electronics, the size of LEDs must be reduced to the micro-scale. Thus, traditional technology cannot meet the demand during the processing of micro-LEDs. Recently, lasers with short-duration pulses have attracted attention because of their unique advantages during micro-LED processing such as noncontact processing, adjustable energy and speed of the laser beam, no cutting force acting on the devices, high efficiency, and low cost. Herein, we review the techniques and principles of laser-based technologies for micro-LED displays, including chip dicing, geometry shaping, annealing, laserassisted bonding, laser lift-off, defect detection, laser repair, mass transfer, and optimization of quantum dot color conversion films. Moreover, the future prospects and challenges of laser-based techniques for micro-LED displays are discussed.

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“…In contrast to broad-area LED, µLEDs with a feature size of tens of micrometers enjoy excellent intrinsic properties such as larger current saturation density and higher modulation bandwidth [19,35,36], revealing their enormous potential in both VLC and SSL fields. Leitão et al set up a VLC system based on a CsPb 4 Br 6 matrix with CsPbBr 3 QDs and an InGaN µLED, with a corresponding modulation bandwidth of up to 24.6 MHz [37]. In our previous report, a high-bandwidth white-light system was proposed which consisted of yellow-emitting CsPbBr 1.8 I 1.2 perovskite quantum dots and a blue GaN-based µLED.…”

Section: Introductionmentioning

confidence: 99%

White-Light GaN-μLEDs Employing Green/Red Perovskite Quantum Dots as Color Converters for Visible Light Communication

et al. 2022

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GaN-based μLEDs with superior properties have enabled outstanding achievements in emerging micro-display, high-quality illumination, and communication applications, especially white-light visible light communication (WL-VLC). WL-VLC systems can simultaneously provide white-light solid-state lighting (SSL) while realizing high-speed wireless optical communication. However, the bandwidth of conventional white-light LEDs is limited by the long-lifetime yellow yttrium aluminum garnet (YAG) phosphor, which restricts the available communication performance. In this paper, white-light GaN-μLEDs combining blue InGaN-μLEDs with green/red perovskite quantum dots (PQDs) are proposed and experimentally demonstrated. Green PQDs (G-PQDs) and red PQDs (R-PQDs) with narrow emission spectrum and short fluorescence lifetime as color converters instead of the conventional slow-response YAG phosphor are mixed with high-bandwidth blue InGaN-μLEDs to generate white light. The communication and illumination performances of the WL-VLC system based on the white-light GaN-based μLEDs are systematically investigated. The VLC properties of monochromatic light (green/red) from G-PQDs or R-PQDs are studied in order to optimize the performance of the white light. The modulation bandwidths of blue InGaN-μLEDs, G-PQDs, and R-PQDs are up to 162 MHz, 64 MHz, and 90 MHz respectively. Furthermore, the white-light bandwidth of 57.5 MHz and the Commission Internationale de L’Eclairage (CIE) of (0.3327, 0.3114) for the WL-VLC system are achieved successfully. These results demonstrate the great potential and the direction of the white-light GaN-μLEDs with PQDs as color converters to be applied for VLC and SSL simultaneously. Meanwhile, these results contribute to the implementation of full-color micro-displays based on μLEDs with high-quality PQDs as color-conversion materials.

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MicroLED-pumped perovskite quantum dot color converter for visible light communications

Cited by 5 publications

References 6 publications

Roadmap on perovskite light-emitting diodes

Roadmap on perovskite light-emitting diodes

Applications of lasers: A promising route toward low-cost fabrication of high-efficiency full-color micro-LED displays

White-Light GaN-μLEDs Employing Green/Red Perovskite Quantum Dots as Color Converters for Visible Light Communication

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