Facile Synthesis and Optical Properties of CsPbX3/ZIF-8 Composites for Wide-Color-Gamut Display

Mei, Shiliang; Yang, Bobo; Wei, Xian; Dai, Hanqing; Chen, Zhihao; Cui, Zhongjie; Zhang, Guilin; Xie, Fengxian; Zhang, Wanlu; Guo, Ruiqian

doi:10.3390/nano9060832

Cited by 40 publications

(22 citation statements)

References 39 publications

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“…It should be noted that the values of t av for CsPbBr 3 and CsPbBr 1.2 I 1.8 NP, embedded in the FAU oxide matrix are significantly higher than that for QD of individual CsPbBr 3 and CsPbBr 1.2 I 1.8 , respectively 5-10 ns [32,41,42] and 27 ns [43]. The t av increase could be associated with the confinement effect on the electronic properties of a semiconductor in the dielectric matrix.…”

Section: Resultsmentioning

confidence: 91%

Effect of Confinement on Structural and Spectral Characteristics of Composites of CsPbX3 Halide Perovskite Nanoparticles with Zeolites of Faujasite Structure

et al. 2021

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CsPbBr 3-z I z /Y(X) nanocomposites based on FAU (Y and X) zeolites and halide perovskite nanoparticles (HP NP) with CsPbBr 3-z I z composition (z = 0 or 1.8) are prepared. The dependence of HP NP content on the SiO 2 :Al 3 O 2 ratio in the parent zeolite and the formation of composite nanorods regardless of zeolite type in the case of iodine-containing HP due to the directional growth of CsPbBr 1.2 I 1.8 crystals towards the (110) plane are shown. It is found that CsPbBr 3-z I z /Y(X) materials are characterized by a significantly greater lifetime and intensity of photoluminescence in comparison with individual HP due to confinement effect. Highly stable films of CsPbBr 3-z I z /Y(X)@Sil (z = 0 or 1.8) nanocomposites in silicone, which are characterized by a significant reduction of the luminescence band width, which is associated with the effect of silicone polymer on halide-ion exchange in HP, are prepared. It is shown that the color rendering index could be increased up to 95, while the partial index R 9 could be increased up to 99 at correlated color temperature of ~4500 K when using CsPbBr 1.2 I 1.8 /X@Sil in white light emitting diodes.

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Section: Resultsmentioning

confidence: 91%

Effect of Confinement on Structural and Spectral Characteristics of Composites of CsPbX3 Halide Perovskite Nanoparticles with Zeolites of Faujasite Structure

et al. 2021

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“…Guo et al presented the synthesis of CsPbBr 3 /ZIF-8 composites by a facile stirring approach (Figure 9c). [69] The resulted composites showed improved stability by comparison to pure PQDs. Notably, a remote-type WLED was formed by placing the CsPbBr 3 /ZIF-8@PMMA and CsPbBr 1.2 I 1.8 /ZIF-8@PMMA films on a blue InGaN chip (445 nm), with the performance including CCT of 8461 K, LE of 12.85 lm•W −1 and a wide gamut covering 137% of the National Television System Committee (NTSC) standard (Figure 9d), implying the potential for white-light backlit display.…”

Section: Mof⊃pqds Phosphormentioning

confidence: 95%

“…In addition to the in situ growth of PQDs in MOFs, the post-synthetic strategy has also been adopted recently to prepare PQDs@MOF composites. By directly physical mixing and surface absorbance of as-prepared PQDs with MOFs, many researchers claimed the broad prospect of PQDs@MOF hostguest system in the applications of photocatalysis, [68] widecolor-gamut display, [69] and optoelectronic field. [19f ] Recently, Su et al reported a post-synthetic protocol of obtaining core-shell CsPbBr 3 @zeolitic imidazolate framework nanocomposites.…”

Section: Mof⊃pqds Phosphormentioning

confidence: 99%

Luminescent Metal–Organic Frameworks for White LEDs

Tang

Cao

et al. 2020

Advanced Optical Materials

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of trichromatic red, green, and blue (RGB) LEDs and the other one is called phosphor-converted white light-emitting diodes (pc-WLEDs), which are assembled by coating RGB phosphor on ultraviolet (UV) LED chips or yellow phosphor on blue LED chips according to the chromaticity principles. Using the UV-LED chip as excitation source can directly obtain the white light emission generated from the phosphor layer. Thus, it is with flexible tunability for phosphor mixing but there is potential risk for UV leakage, while the blue LED chip is more mature in technology and of higher efficiency. Recent years have witnessed the rapid development of pc-WLEDs since the white-light illuminating device based on a blue InGaN LED chip have been brought to reality and gradually become the mainstream in commercial lighting market owing to high efficiency, packaging simplicity and effective cost. [5] Until now, inorganic phosphors such as aluminate, silicate and oxynitride are usually the options for pc-WLEDs due to mature technology. [6] But there are still several deficiencies for the current white lighting. First, the production of these inorganic phosphors poses increasing dependence on rare earth metal, which is the limited resource of the planet. And high-temperature solid-state synthesis is necessary for the industrial production of rare-earth phosphor, which causes high energy consumption. Additionally, the mixing and combination of several different color-emitting phosphors is necessary for well color-rendering broadband white light emission since the inorganic phosphors mentioned above are monochromatic. This may trigger phase separation and color instability during the application. Thus, searching for novel phosphor with fine colour-tunability covering the whole visible spectrum is under exploration recently.Luminescent metal-organic frameworks (MOFs) are identified as a novel and ideal phosphor candidate for pc-WLEDs. During the past decades, MOFs have aroused extensive research interest in many applications including gas storage and separation, [7] catalysis, [8] light-emitting diodes, [9] fluorescent sensors, [10] nonlinear optics, [11] laser, [12] biomedicine [13] and medical imaging, [14] owing to their highly-designable porous architectures, large specific surface area and modifiable chemical functionalities. [15] While luminescent MOFs are always in the spotlight because of their fascinating and designable optical properties especially for white light emission. [16] As is shown in Figure 1, first of all, the emission properties of luminescent MOFs can be rationally designed through selective incorporation of diverse luminescent centres as building Phosphor-converted white light-emitting diodes (pc-WLEDs), as a main approach of solid-state white light illumination, have caught tremendous attention and achieved enormous progress in the past decades. Since the phosphor plays a dominating role in the final property of pc-WLEDs, the exploration for high-performance phosphor has become a challenging and targeted research t...

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“…Several properties have been studied for ZIF-8, such as its structural, optical and electronic properties [22][23][24][25][26][27]. However, the thermal stability of ZIF-8 is not enough since, in several industrial operations, harsh conditions-for instance: high pressures, high temperature, and the existence of oxidants-are needed.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of a Metal–Organic Framework ZnxCo1-X-ZIF-8 for Recent Applications

et al. 2021

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Zeolitic imidazolate frameworks (ZIFs) are interesting materials for use in several aspects: energy storage material, gas sensing, and photocatalysis. The thermal stability and pyrolysis process are crucial in determining the active phase of the material. A deep understanding of the pyrolysis mechanism is in demand. Therefore, the thermodynamics and combustion process with different heating rates was examined, and the kinetic parameters were computed employing thermogravimetric tests. Based on the TG analysis of combustion, pyrolysis moves to the high-temperature region with an increase in heating rate. The decomposition process can be separated into the dehydration (300–503 K) and the pyrolysis reaction (703–1100 K). Three points of the decomposition process are performed by dynamical analysis owing to shifts of slopes, but the combustion process has only one stage. The Zeolitic imidazolate framework’s structure properties were examined using TDDFT-DFT/DMOl3 simulation techniques. Dynamical parameters, for instance, the possible mechanism, the pre-exponential factor, and the apparent activation energy are obtained through comparison using the Kissinger formula. The thermodynamics analysis of the Zn1-xCox-ZIF-8 materials is an effective way to explore the temperature influence on the process of pyrolysis, which can benefit several environment purifications, photocatalyst, and recent applications.

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Facile Synthesis and Optical Properties of CsPbX3/ZIF-8 Composites for Wide-Color-Gamut Display

Cited by 40 publications

References 39 publications

Effect of Confinement on Structural and Spectral Characteristics of Composites of CsPbX3 Halide Perovskite Nanoparticles with Zeolites of Faujasite Structure

Effect of Confinement on Structural and Spectral Characteristics of Composites of CsPbX3 Halide Perovskite Nanoparticles with Zeolites of Faujasite Structure

Luminescent Metal–Organic Frameworks for White LEDs

Thermal Analysis of a Metal–Organic Framework ZnxCo1-X-ZIF-8 for Recent Applications

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