A comprehensive review of doping in perovskite nanocrystals/quantum dots: evolution of structure, electronics, optics, and light-emitting diodes

Xu, Leimeng; Yuan, Shichen; Zeng, Haibo; Song, Jizhong

doi:10.1016/j.mtnano.2019.100036

Cited by 155 publications

(124 citation statements)

References 152 publications

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“…Among these, trivalent europium (Eu 3+ ) has a characteristic intense red luminescence which makes it very interesting for light-emitting devices with high color purity, 16 , 17 optical amplifiers and lasers, 18 , 19 sensors and spectroscopic probes. 20 Since the closed 5s 2 and 5p 6 shells efficiently screen the partially filled 4f shell, where the transitions responsible for the luminescence occur, the electronic configuration is only weakly perturbed thus resulting in extremely narrow emission lines and long excited state lifetimes. 21 , 22 Eu 3+ doping has been shown in combination with a wide range of host matrices like glasses, xerogels, polysilsesquioxanes, metal organic frameworks, polyoxometalates, organic polymers as well as in intercalation compounds with layered materials, such as layered double hydroxides and clays.…”

Section: Introductionmentioning

confidence: 99%

Layered Perovskite Doping with Eu³⁺ and β-diketonate Eu³⁺ Complex

et al. 2021

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Metal halide perovskites are attracting great interest for the fabrication of light-emitting devices encompassing light-emitting diodes, lasers, and scintillators. As the field develops, perovskite doping emerges as a promising way to enrich the material functionalities and enhance the luminescence yield and tunability. While Mn +2 addition has been well explored, doping with lanthanides has received less attention, even though their intense and line-like luminescence is interesting for a wide range of applications. In this work, we study the doping of NMA 2 PbBr 4 layered perovskites with Eu 3+ and Eu 3+ tetrakis β-diketonate complex. By exploiting the antenna effect of the naphthalene-based functional cation (NMA = 1-naphtylmethylammonium), direct sensitization of Eu 3+ is obtained; nevertheless, it is not very efficient due to the non-optimal energy level alignment with the resonance acceptor level of the lanthanide. Protection of Eu 3+ in the form of tetrakis β-diketonate complex grants a more ideal coordination geometry and energetic landscape for the energy transfer to europium in the perovskite matrix, allowing for a nearly 30-fold improvement in luminescence yield. This work sets the basis for new synthetic strategies for the design of functional perovskite/lanthanide host–guest systems with improved luminescence properties.

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Section: Introductionmentioning

confidence: 99%

Layered Perovskite Doping with Eu³⁺ and β-diketonate Eu³⁺ Complex

et al. 2021

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“…doping on perovskites has been carried out to improve the material stability (Fig. 12a) [130][131][132] . The appropriate doping can generate suitable host-guest interfaces to passivate unwanted trap states and inhibit nonradiative recombination, leading to enhanced stability under ambient conditions 133 .…”

Section: Outlook Of µ-Leds and Qdsmentioning

confidence: 99%

Micro-light-emitting diodes with quantum dots in display technology

et al. 2020

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Micro-light-emitting diodes (μ-LEDs) are regarded as the cornerstone of next-generation display technology to meet the personalised demands of advanced applications, such as mobile phones, wearable watches, virtual/ augmented reality, micro-projectors and ultrahigh-definition TVs. However, as the LED chip size shrinks to below 20 μm, conventional phosphor colour conversion cannot present sufficient luminance and yield to support highresolution displays due to the low absorption cross-section. The emergence of quantum dot (QD) materials is expected to fill this gap due to their remarkable photoluminescence, narrow bandwidth emission, colour tuneability, high quantum yield and nanoscale size, providing a powerful full-colour solution for μ-LED displays. Here, we comprehensively review the latest progress concerning the implementation of μ-LEDs and QDs in display technology, including μ-LED design and fabrication, large-scale μ-LED transfer and QD full-colour strategy. Outlooks on QD stability, patterning and deposition and challenges of μ-LED displays are also provided. Finally, we discuss the advanced applications of QD-based μ-LED displays, showing the bright future of this technology.

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“…To boost or modulate photoelectric properties of lead‐free HDP nanocrystals, the metal doping/alloying strategies are widely employed. [ 143–145 ] According to the substitution possibilities of the elements existed in the A 2 B + B 3+ X 6 , A 2 B 4+ X 6 , and A 4 B 2+ B 3+ 2 X 12 HDP structure, we simply classify metal doping/alloying strategies of HDP nanocrystals reported in the literature into the isovalent “B + ‐site”, “B 2+ ‐site”, “B 3+ ‐ site”, and “B 4+ ‐ site” doping/alloying and heterovalent B‐site doping/alloying. The different valence states of B‐site metals in HDP structure provide more possibility of doping/alloying, generating fascinating photoelectricity performance for desired HDP materials.…”

Section: Strategies For Boosting the Efficiency Of Halide Double Peromentioning

confidence: 99%

Lead‐Free Halide Double Perovskite Nanocrystals for Light‐Emitting Applications: Strategies for Boosting Efficiency and Stability

et al. 2021

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Lead‐free halide double perovskite (HDP) nanocrystals are considered as one of the most promising alternatives to the lead halide perovskite nanocrystals due to their unique characteristics of nontoxicity, robust intrinsic thermodynamic stability, rich and tunable optoelectronic properties. Although lead‐free HDP variants with highly efficient emission are synthesized and characterized, the photoluminescent (PL) properties of colloidal HDP nanocrystals still have enormous challenges for application in light‐emitting diode (LED) devices due to their intrinsic and surface defects, indirect band, and disallowable optical transitions. Herein, recent progress on the synthetic strategies, ligands passivation, and metal doping/alloying for boosting efficiency and stability of HDP nanocrystals is comprehensive summarized. It begins by introducing the crystalline structure, electronic structure, and PL mechanism of lead‐free HDPs. Next, the limiting factors on PL properties and origins of instability are analyzed, followed by highlighting the effects of synthesis strategies, ligands passivation, and metal doping/alloying on the PL properties and stability of the HDPs. Then, their preliminary applications for LED devices are emphasized. Finally, the challenges and prospects concerning the development of highly efficient and stable HDP nanocrystals‐based LED devices in the future are proposed.

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A comprehensive review of doping in perovskite nanocrystals/quantum dots: evolution of structure, electronics, optics, and light-emitting diodes

Cited by 155 publications

References 152 publications

Layered Perovskite Doping with Eu³⁺ and β-diketonate Eu³⁺ Complex

Layered Perovskite Doping with Eu³⁺ and β-diketonate Eu³⁺ Complex

Micro-light-emitting diodes with quantum dots in display technology

Lead‐Free Halide Double Perovskite Nanocrystals for Light‐Emitting Applications: Strategies for Boosting Efficiency and Stability

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A comprehensive review of doping in perovskite nanocrystals/quantum dots: evolution of structure, electronics, optics, and light-emitting diodes

Cited by 155 publications

References 152 publications

Layered Perovskite Doping with Eu3+ and β-diketonate Eu3+ Complex

Layered Perovskite Doping with Eu3+ and β-diketonate Eu3+ Complex

Micro-light-emitting diodes with quantum dots in display technology

Lead‐Free Halide Double Perovskite Nanocrystals for Light‐Emitting Applications: Strategies for Boosting Efficiency and Stability

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Layered Perovskite Doping with Eu³⁺ and β-diketonate Eu³⁺ Complex

Layered Perovskite Doping with Eu³⁺ and β-diketonate Eu³⁺ Complex