Enhanced performance of inverted CsPbBr3 nanocrystal LEDs via Zn(II) doping

Zhou, Xiaowen; Zhao, Yu; Huang, Wen-Zhe; Wu, Yuanyuan; Wu, Zhongen; He, Gufeng

doi:10.1016/j.orgel.2021.106253

Cited by 12 publications

(5 citation statements)

References 40 publications

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“…The results indicated no phase transition of the CsPbBr 3 NPLs after ZnBr 2 post-treatment. It has been reported that doping small-sized Zn 2+ in the CsPbBr 3 lattice commonly induces lattice contraction, resulting in a shift of XRD peaks to higher angles. , Notably, no obvious shift in the XRD peak positions of NPLs after ZnBr 2 treatment was observed, suggesting that Zn 2+ ions may not be incorporated into the perovskite lattice.…”

Section: Resultsmentioning

confidence: 97%

Stable Blue-Emitting CsPbBr₃ Nanoplatelets for Lighting and Display Applications

Zhang

Zhou

Peng

et al. 2022

ACS Appl. Nano Mater.

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Quantum-confined CsPbBr 3 nanoplatelets (NPLs) with narrow full width at half-maximum (FWHM), large exciton binding energies, and precisely tunable thickness have become one of the promising materials for lighting and display. Still, the synthesis of CsPbBr 3 NPLs with high photoluminescence (PL) intensity and excellent stability is challenging, hindering their large-scale application in lighting devices. Herein, we present a facile post-treatment strategy to enhance the PL performance of CsPbBr 3 NPLs by surface passivation with a ZnBr 2 solution. The ZnBr 2 -treated CsPbBr 3 NPLs exhibit 90% photoluminescence quantum yield (PLQY) in the dispersion at 461 nm and 50% PLQY in thin films. Benefiting from surface defect passivation and ion migration suppression, ZnBr 2treated CsPbBr 3 NPLs exhibit outstanding stability over pristine CsPbBr 3 NPLs during long-term storage and exposure to a polar solution, light, and heating treatment. Specifically, the PL intensity of ZnBr 2 -treated CsPbBr 3 NPLs dispersion shows a little decrease after storage at ambient conditions for 50 days or after mixing with ethanol for 160 h. Under challenging conditions including exposure to ultraviolet light for 300 h or heating at 70 °C for 30 min, their PLQY decreases only slightly.

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Section: Resultsmentioning

confidence: 97%

Stable Blue-Emitting CsPbBr₃ Nanoplatelets for Lighting and Display Applications

Zhang

Zhou

Peng

et al. 2022

ACS Appl. Nano Mater.

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“…For the MOF-modified AgNW TCF, the MOF precursor solution was deposited on top of the AgNW network using a Meyer rod. Subsequently, an annealing step was performed at a temperature of 120 °C to facilitate the formation of the [(H 3 O)Zn(HCOO) 3 ] ∞ MOF on the AgNW film, , which also helped to weld the contacts between neighboring nanowires. The MOF layer is about 70 nm thick.…”

Section: Resultsmentioning

confidence: 99%

Metal–Organic Framework-Modified Silver Nanowire Transparent Film with Enhanced Conductivity and Stability for Efficient Organic Light-Emitting Diodes

Zhao

Huang

Kang

et al. 2023

ACS Appl. Mater. Interfaces

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Silver nanowire (AgNW) is recognized as a critical material for developing the next generation of transparent conductive films (TCFs); however, poor stability remains a major issue. Herein, we demonstrate a stable AgNW TCF passivated by a metal–organic framework (MOF) via a facile solution process. The MOF is chemically bonded to the surface of the AgNWs as a chemical inhibitor, which contributes to passivating highly active sites and providing chemical protection, leading to enhanced resistance to corrosive molecules and thereby offering exceptional stability under an ambient atmosphere. Simultaneously, the binding interaction with the MOF anchors silver atoms at the surface of the nanowires, suppressing their diffusion at high temperatures and allowing the AgNW film to maintain excellent conductivity up to 300 °C. Additionally, the hydrogen bonding between the MOF and the substrate, along with the tight connection of the MOF with AgNWs, improves the welding between the nanowires, enhancing the conductivity of the AgNW film at mild conditions while offering good flexibility and adhesion properties. Furthermore, the OLED device integrating the MOF-modified AgNW electrode shows comparable performance to an indium tin oxide-based device, verifying its huge potential for applications in optoelectronic devices.

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“…The CsPbBr 3 dispersed in hexane (5 mg/ml) was synthesized according to the previous reports [16], [17], and the average crystal size was around 20 nm. For a doped LC, the CsPbBr 3 dispersion was added into nematic LC (5CB) with different ratios and stirred for 1 hour.…”

Section: Experimental Detailmentioning

confidence: 99%

Dynamic Holographic Display Based on Perovskite Nanocrystal Doped Liquid Crystal Film

Zhou

et al. 2021

IEEE Photonics J.

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Holography can produce the most real threedimensional (3D) image, and is considered as the ultimate 3D display technology. However, compared with other display technologies, it has not been practically available in video display so far due to low refresh rate. To realize dynamic holographic display, photosensitive material doped liquid crystal (LC) has been discovered and deeply investigated because of superior photorefractive and photoelectric properties. In this work, we present a dynamic holographic display using LC film doped with perovskite (CsPbBr 3 ) nanocrystal (NC) as the photorefractive material. The dependence of diffraction efficiency and response time on doping concentration, recording beam power and applied voltage are investigated. A maximum diffraction efficiency of 18% has been achieved under a low electric field intensity of 0.45 V/µm and the shortest build-up time of grating is 5.5 ms. The system can realize a video display with 60 Hz refresh rate in red, green and blue colors, which demonstrates the feasibility of applying perovskite NC doped LC film in dynamic holographic display.

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Enhanced performance of inverted CsPbBr3 nanocrystal LEDs via Zn(II) doping

Cited by 12 publications

References 40 publications

Stable Blue-Emitting CsPbBr₃ Nanoplatelets for Lighting and Display Applications

Stable Blue-Emitting CsPbBr₃ Nanoplatelets for Lighting and Display Applications

Metal–Organic Framework-Modified Silver Nanowire Transparent Film with Enhanced Conductivity and Stability for Efficient Organic Light-Emitting Diodes

Dynamic Holographic Display Based on Perovskite Nanocrystal Doped Liquid Crystal Film

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Enhanced performance of inverted CsPbBr3 nanocrystal LEDs via Zn(II) doping

Cited by 12 publications

References 40 publications

Stable Blue-Emitting CsPbBr3 Nanoplatelets for Lighting and Display Applications

Stable Blue-Emitting CsPbBr3 Nanoplatelets for Lighting and Display Applications

Metal–Organic Framework-Modified Silver Nanowire Transparent Film with Enhanced Conductivity and Stability for Efficient Organic Light-Emitting Diodes

Dynamic Holographic Display Based on Perovskite Nanocrystal Doped Liquid Crystal Film

Contact Info

Product

Resources

About

Stable Blue-Emitting CsPbBr₃ Nanoplatelets for Lighting and Display Applications

Stable Blue-Emitting CsPbBr₃ Nanoplatelets for Lighting and Display Applications