Perovskite Quantum Dots Glasses Based Backlit Displays

Abstract

Perovskite quantum dots (PeQDs) have been regarded as an alternative to traditional phosphor color converters in the backlit display to improve the color gamut and rendition of LCD. However, the pending barriers of aggregation quenching and structure instability are hindering their practical applications. Herein, high-quality CsPbX3 (X = Br, Br/I) PeQDs were in situ precipitated inside glass to produce nanocomposites with superior optical performance and stability. The highest photoluminescence quantum yield (PLQY) of ∼100% for CsPbBr3@glass is ascribed to the elimination of the inner filter effect via a physical dilution approach to restore its apparent value to an intrinsic one, and the exceptional photostability and water/heat resistance are benefited from their effective isolation from the external environment by the surrounding glass network units. Employing the PeQDs@glass@PDMS monolithic film, a high-performance backlit LCD was designed, and its color gamut reached 152% of commercial LCD and 103% of NTSC, demonstrating a great potential in the optoelectronic industry.

Visible-light-stimulated synaptic InGaZnO phototransistors enabled by wavelength-tunable perovskite quantum dots

“…[15][16][17][18] Inorganic lead halide perovskite (CsPbX 3 , X ¼ Cl, Br, I) quantum dots (QDs), which possess higher stability than their thin-lm counterparts, have gained extensive research interest in the eld of light-emitting diodes and photodetectors. [19][20][21][22][23][24] Previously, we have shown enhancement in photoresponsivity by capping IGZO with perovskite QDs. 18 Perovskite QDs seem attractive enough in this case due to their tunable-wavelength capability.…”

Surface modification of K2TiF6:Mn4+ phosphor with SrF2 coating to enhance water resistance

“…Acting as the mainstream lighting sources, most commercial white light‐emitting diodes (LEDs) are fabricated by the blue InGaN chips and Y 3 Al 5 O 12 :Ce 3+ (YAG:Ce 3+ ) yellow phosphor. However, the scarcity of red component in their spectra results in poor color rendering index (CRI, Ra <80) and high correlated color temperature (CCT, Tc >4500 K) 1‐4 . Red LED phosphors have been considered as a key factor to improve the luminous quality of lighting devices.…”

Preparation and Research of Perovskite Quantum Dots Powder Based on RbCl Doped CsPbBr3

“…With the rapid development of optical materials, perovskite quantum dots stand out in the field of optical materials, [1–3] and achieve a wide range of applications in laser, [4] photoelectric detectors, [5] solar cells and other fields [6–7] . In addition to the simple preparation method and low cost, this kind of material also has the advantages of adjustable band gap, narrow emission peak and high color purity [8–10] . In addition, there are two problems restricting the development of perovskite quantum dots.…”