Augmented reality and virtual reality displays: emerging technologies and future perspectives

Light Science & Applications, Journal Year: 2021, Volume and Issue: 10(1)

Published: Oct. 25, 2021

Abstract With rapid advances in high-speed communication and computation, augmented reality (AR) virtual (VR) are emerging as next-generation display platforms for deeper human-digital interactions. Nonetheless, to simultaneously match the exceptional performance of human vision keep near-eye module compact lightweight imposes unprecedented challenges on optical engineering. Fortunately, recent progress holographic elements (HOEs) lithography-enabled devices provide innovative ways tackle these obstacles AR VR that otherwise difficult with traditional optics. In this review, we begin introducing basic structures headsets, then describing operation principles various HOEs devices. Their properties analyzed detail, including strong selectivity wavelength incident angle, multiplexing ability volume HOEs, polarization dependency active switching liquid crystal device fabrication, micro-LEDs (light-emitting diodes), large design freedoms metasurfaces. Afterwards, discuss how help enhance performance, detailed description analysis some state-of-the-art architectures. Finally, cast a perspective potential developments research directions photonic future displays.

Language: Английский

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Low‐Dimensional Metal Halide Perovskite Photodetectors

Advanced Materials, Journal Year: 2020, Volume and Issue: 33(7)

Published: Dec. 21, 2020

Abstract Metal halide perovskites (MHPs) have been a hot research topic due to their facile synthesis, excellent optical and optoelectronic properties, record‐breaking efficiency of corresponding devices. Nowadays, the development miniaturized high‐performance photodetectors (PDs) has fueling demand for novel photoactive materials, among which low‐dimensional MHPs attracted burgeoning interest. In this report, photodetection performance, stability MHPs, including 0D, 1D, 2D layered nonlayered nanostructures, as well heterostructures are reviewed. Recent advances in synthesis approaches summarized key concepts understanding properties related PD applications introduced. More importantly, recent progress PDs based on is presented, strategies improving performance perovskite highlighted. By discussing advances, strategies, existing challenges, report provides perspectives MHP‐based future.

Language: Английский

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Nanocrystal Quantum Dots: From Discovery to Modern Development

ACS Nano, Journal Year: 2021, Volume and Issue: 15(4), P. 6192 - 6210

Published: April 8, 2021

This review traces nanocrystal quantum dot (QD) research from the early discoveries to present day and into future. We describe extensive body of theoretical experimental knowledge that comprises modern science QDs. Indeed, spatial confinement electrons, holes, excitons in nanocrystals, coupled with ability chemical synthesis make complex designed structures, is today enabling multiple applications QD size-tunable electronic optical properties.

Language: Английский

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Three-dimensional direct lithography of stable perovskite nanocrystals in glass

Science, Journal Year: 2022, Volume and Issue: 375(6578), P. 307 - 310

Published: Jan. 20, 2022

Material composition engineering and device fabrication of perovskite nanocrystals (PNCs) in solution can introduce organic contamination entail several synthetic, processing, stabilization steps. We report three-dimensional (3D) direct lithography PNCs with tunable bandgap glass. The halide ion distribution was controlled at the nanoscale ultrafast laser-induced liquid nanophase separation. exhibit notable stability against ultraviolet irradiation, solution, high temperatures (up to 250°C). Printed 3D structures glass were used for optical storage, micro-light emitting diodes, holographic displays. proposed mechanisms both PNC formation tunability verified.

Language: Английский

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Advanced liquid crystal devices for augmented reality and virtual reality displays: principles and applications

Light Science & Applications, Journal Year: 2022, Volume and Issue: 11(1)

Published: May 30, 2022

Liquid crystal displays (LCDs) and photonic devices play a pivotal role to augmented reality (AR) virtual (VR). The recently emerging high-dynamic-range (HDR) mini-LED backlit LCDs significantly boost the image quality brightness reduce power consumption for VR displays. Such light engine is particularly attractive compensating optical loss of pancake structure achieve compact lightweight headsets. On other hand, high-resolution-density, high-brightness liquid-crystal-on-silicon (LCoS) promising source see-through AR displays, especially under high ambient lighting conditions. Meanwhile, high-speed LCoS spatial modulators open new door holographic focal surface Finally, ultrathin planar diffractive LC elements, such as geometric phase grating lens, have found useful applications in enhancing resolution, widening field-of-view, suppressing chromatic aberrations, creating multiplanes overcome vergence-accommodation conflict, dynamic pupil steering gaze-matched Maxwellian just name few. operation principles, potential applications, future challenges these advanced will be discussed.

Language: Английский

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Review: Quantum Dot Light-Emitting Diodes

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(8), P. 4663 - 4692

Published: Feb. 16, 2023

Quantum dot light-emitting diodes (QD-LEDs) are one of the most promising self-emissive displays in terms efficiency, wavelength tunability, and cost. Future applications using QD-LEDs can cover a range from wide color gamut large panel to augmented/virtual reality displays, wearable/flexible automotive transparent which demand extreme performance contrast ratio, viewing angle, response time, power consumption. The efficiency lifetime have been improved by tailoring QD structures optimizing charge balance transport layers, resulting theoretical for unit devices. Currently, longevity inkjet-printing fabrication being tested future commercialization. In this Review, we summarize significant progress development describe their potential compared other displays. Furthermore, critical elements determine QD-LEDs, such as emitters, hole/electron device structures, discussed comprehensively, degradation mechanisms devices issues process were also investigated.

Language: Английский

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Prospects and challenges of mini‐LED, OLED, and micro‐LED displays

Journal of the Society for Information Display, Journal Year: 2021, Volume and Issue: 29(6), P. 446 - 465

Published: May 24, 2021

Abstract Recently, “liquid crystal display (LCD), organic light‐emitting diode (OLED), or micro‐light‐emitting (LED): who wins?” is a heated debatable question. In this review article, we provide comprehensive overview of these three promising technologies through nine performance indicators, including ambient contrast ratio, motion picture response time, viewing angle and angular color shift, gamut, resolution density, power consumption, cost, lifetime, thin profile panel flexibility. The advantages disadvantages each technology are analyzed, their future perspectives discussed.

Language: Английский

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Recent Progress on Electrical and Optical Manipulations of Perovskite Photodetectors

Advanced Science, Journal Year: 2021, Volume and Issue: 8(14)

Published: May 24, 2021

Photodetectors built from conventional bulk materials such as silicon, III-V or II-VI compound semiconductors are one of the most ubiquitous types technology in use today. The past decade has witnessed a dramatic increase interest emerging photodetectors based on perovskite driven by growing demands for uncooled, low-cost, lightweight, and even flexible photodetection technology. Though good electrical optical properties, perovskite-based always suffer nonideal quantum efficiency high-power consumption. Joint manipulation electrons photons is promising strategy to improve detection efficiency. In this review, characteristics typical first summarized. Electrical manipulations discussed. Then, artificial photonic nanostructures photon detailed light absorption By reviewing photodetectors, review aims provide strategies achieve high-performance photodetectors.

Language: Английский

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Perovskite Quantum Dots for Application in High Color Gamut Backlighting Display of Light-Emitting Diodes

ACS Energy Letters, Journal Year: 2020, Volume and Issue: 5(11), P. 3374 - 3396

Published: Oct. 12, 2020

Lead halide perovskite quantum dots (LHP QDs) exhibit great potential in the backlighting display of light-emitting diode applications. Light-emitting with high brightness, low cost, and wide color gamut can be achieved based on LHP QDs, which have advantages luminescence performance, tunable emission, facile synthesis. However, some drawbacks, including instability large-scale synthesis, that restrict practical application QDs remain. This Review focuses solutions to these obstacles. The gap between fundamental knowledge applications must narrowed. strategies for stability improvements scalable synthesis are summarized clarified. provides inspiration optimization promotes their backlighting, contributes current future solutions.

Language: Английский

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Halide Perovskites: A New Era of Solution‐Processed Electronics

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(23)

Published: May 3, 2021

Abstract Organic–inorganic mixed halide perovskites have emerged as an excellent class of materials with a unique combination optoelectronic properties, suitable for plethora applications ranging from solar cells to light‐emitting diodes and photoelectrochemical devices. Recent works showcased hybrid electronic through improvements in design, processing, device stability. Herein, comprehensive up‐to‐date review is presented on perovskite electronics focus transistors memories. These are supported by the fundamental material properties semiconductors such tunable bandgap, ambipolar charge transport, reasonable mobility, defect characteristics, solution processability, which highlighted first. Then, recent progresses perovskite‐based reviewed, covering aspects fabrication process, patterning techniques, contact engineering, 2D versus 3D selection, performance. Furthermore, nonvolatile memories artificial synaptic devices presented. The ambient instability strategies tackle this bottleneck also discussed. Finally, outlook opportunities develop competitive feasible technology highlighted.

Language: Английский

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