Advances in Quantum-Dot-Based Displays

Abstract

<jats:p>In terms of their use in displays, quantum dots (QDs) exhibit several advantages, including high illumination efficiency and color rendering, low-cost, and capacity for mass production. Furthermore, they are environmentally friendly. Excellent luminescence and charge transport properties of QDs led to their application in QD-based light-emitting diodes (LEDs), which have attracted considerable attention in display and solid-state lighting applications. In this review, we discuss the applications of QDs which are used on color conversion filter that exhibit high efficiency in white LEDs, full-color micro-LED devices, and liquid-type structure devices, among others. Furthermore, we discuss different QD printing processes and coating methods to achieve the full-color micro-LED. With the rise in popularity of wearable and see-through red, green, and blue (RGB) full-color displays, the flexible substrate is considered as a good potential candidate. The anisotropic conductive film method provides a small controllable linewidth of electrically conductive particles. Finally, we discuss the advanced application for flexible full-color and highly efficient QD micro-LEDs. The general conclusion of this study also involves the demand for a more straightforward QD deposition technique, whose breakthrough is expected.</jats:p>

Low-Temperature Molten Salts Synthesis: CsPbBr3 Nanocrystals with High Photoluminescence Emission Buried in Mesoporous SiO2

“…Being characterized by three distinct narrow emission peaks of blue, green, and red colors ( Figure 4 a), such white LED is promising as a light source in LCD backlighting for wider color gamut displays. 52 In this regard, at present, the most used architecture for the backlighting unit in LCD displays consists of a blue LED light source (450–460 nm wavelength, as the backlight) and a color-converting polymer film containing green and red emissive quantum dots or phosphors (QDs-polymer composite films). In this configuration (remote application), part of the blue light is transmitted, and the rest is converted by the quantum dots/phosphor into green and red yielding a final white emission.…”

High-Uniform and High-Efficient Color Conversion Nanoporous GaN-Based Micro-LED Display with Embedded Quantum Dots

“…In recent years, only micro-LED has been able to satisfy the high-resolution requirements of popular near-eye displays such as virtual reality (VR) and augment reality (AR) by offering high brightness [6,7], enhanced robustness, longer lifetimes and smaller form factors. In addition, micro-LEDs are also game-changing technology for a variety of different applications [8,9], ranging from large-area displays and televisions to mobile phones, smartwatches, automotive panels, visible light communication (VLC) [10,11], and flexible lighting. However, for micro-LEDs with a size below 80 µm, the substrate must be removed to minimize the overall dimensions.…”

Perovskite Light-Emitting Devices with Doped Hole Transporting Layer

“…Due to the surface and bulk defects, surface traps and ion migration may be induced, which worsens charge injection and transport properties [ 13 ]. Furthermore, the optical properties of PQDs are easily influenced by their surrounding environment, which leads to the relatively low stability of PQDs under EL process [ 14 ]. Therefore, it is of fundamental importance to improve the charge injection and transport in the LEDs based on PQDs.…”