State of the Art and Prospects for Halide Perovskite Nanocrystals

Dey, Arun K.; Ye, Junzhi; De, Apurba; Debroye, Elke; Ha, Seung Kyun; Bladt, Eva; Kshirsagar, Anuraj S.; Wang, Ziyu; Yin, Jun; Wang, Yue; Quan, Li Na; Yan, Fei; Gao, Mengyu; Li, Xiaoming; Shamsi, Javad; Debnath, Tushar; Cao, Muhan; Reus, Manuel A.; Kumar, Sudhir; Steele, Julian A.; Gerhard, Marina; Chouhan, Lata; Xu, Ke; Wu, Xian‐gang; Li, Yanxiu; Zhang, Yangning; Dutta, Anirban; Han, Chuang; Vinçon, Ilka; Rogach, Andrey L.; Nag, Angshuman; Samanta, Anunay; Korgel, Brian A.; Shih, Chih‐Jen; Gamelin, Daniel R.; Son, Dong Hee; Zeng, Haibo; Zhong, Haizheng; Sun, Handong; Demir, Hilmi Volkan; Scheblykin, Ivan G.; Mora‐Seró, Iván; Stolarczyk, Jacek K.; Zhang, Jin Z.; Feldmann, Jochen; Hofkens, Johan; Luther, Joseph M.; Pérez‐Prieto, Julia; Li, Liang; Manna, Liberato; Bodnarchuk, Maryna I.; Kovalenko, Maksym V.; Roeffaers, Maarten B. J.; Pradhan, Narayan; Mohammed, Omar F.; Bakr, Osman M.; Yang, Peidong; Müller‐Buschbaum, Peter; Kamat, Prashant V.; Bao, Qiaoliang; Zhang, Qiao; Krahne, Roman; Galian, Raquel E.; Stranks, Samuel D.; Bals, Sara; Biju, Vasudevanpillai; Tisdale, William A.; Yan, Yong; Hoye, Robert L. Z.; Polavarapu, Lakshminarayana

doi:10.1021/acsnano.0c08903

Cited by 743 publications

(951 citation statements)

References 1,329 publications

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“…Unlike traditional chalcogenide NCs, metal halide perovskite (MHP) NCs are soft ionic materials that possess unique features, 20 − 23 such as highly dynamic surface ligands, 24 , 25 rapid anion exchange, 26 − 28 and ease of ion migration, 29 which facilitate their regrowth and the rearrangement of their overall appearance ( Scheme 1 ). Consequently, the regrowth of MHP NCs can occur after the self-assembly process.…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly and Regrowth of Metal Halide Perovskite Nanocrystals for Optoelectronic Applications

et al. 2022

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Conspectus Over the past decade, the impressive development of metal halide perovskites (MHPs) has made them leading candidates for applications in photovoltaics (PVs), X-ray scintillators, and light-emitting diodes (LEDs). Constructing MHP nanocrystals (NCs) with promising optoelectronic properties using a low-cost approach is critical to realizing their commercial potential. Self-assembly and regrowth techniques provide a simple and powerful “bottom-up” platform for controlling the structure, shape, and dimensionality of MHP NCs. The soft ionic nature of MHP NCs, in conjunction with their low formation energy, rapid anion exchange, and ease of ion migration, enables the rearrangement of their overall appearance via self-assembly or regrowth. Because of their low formation energy and highly dynamic surface ligands, MHP NCs have a higher propensity to regrow than conventional hard-lattice NCs. Moreover, their self-assembly and regrowth can be achieved simultaneously. The self-assembly of NCs into close-packed, long-range-ordered mesostructures provides a platform for modulating their electronic properties (e.g., conductivity and carrier mobility). Moreover, assembled MHP NCs exhibit collective properties (e.g., superfluorescence, renormalized emission, longer phase coherence times, and long exciton diffusion lengths) that can translate into dramatic improvements in device performance. Further regrowth into fused MHP nanostructures with the removal of ligand barriers between NCs could facilitate charge carrier transport, eliminate surface point defects, and enhance stability against moisture, light, and electron-beam irradiation. However, the synthesis strategies, diversity and complexity of structures, and optoelectronic applications that emanate from the self-assembly and regrowth of MHPs have not yet received much attention. Consequently, a comprehensive understanding of the design principles of self-assembled and fused MHP nanostructures will fuel further advances in their optoelectronic applications. In this Account, we review the latest developments in the self-assembly and regrowth of MHP NCs. We begin with a survey of the mechanisms, driving forces, and techniques for controlling MHP NC self-assembly. We then explore the phase transition of fused MHP nanostructures at the atomic level, delving into the mechanisms of facet-directed connections and the kinetics of their shape-modulation behavior, which have been elucidated with the aid of high-resolution transmission electron microscopy (HRTEM) and first-principles density functional theory calculations of surface energies. We further outline the applications of assembled and fused nanostructures. Finally, we conclude with a perspective on current challenges and future directions in the field of MHP NCs.

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Section: Introductionmentioning

confidence: 99%

Self-Assembly and Regrowth of Metal Halide Perovskite Nanocrystals for Optoelectronic Applications

et al. 2022

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“…Doping may enhance their luminosity and promote charge carrier transport and crystal phase stabilization [ 2 ]. Different divalent metal ions including Mn 2+ , Sn 2+ , Ca 2+ , Zn 2+ , Cu 2+ , and Ni 2+ have been used for isovalent B-site doping (where ABX 3 is a general structural formula) of cesium lead halide perovskite nanocrystals (NCs) [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. B-site doping is also considered a new approach to achieving better characteristics of devices based on perovskite NCs, and that was demonstrated for CsPbBr 3 NCs, which are important nanomaterials to produce green-emitting light-emitting diodes (LEDs) [ 12 , 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…Different divalent metal ions including Mn 2+ , Sn 2+ , Ca 2+ , Zn 2+ , Cu 2+ , and Ni 2+ have been used for isovalent B-site doping (where ABX 3 is a general structural formula) of cesium lead halide perovskite nanocrystals (NCs) [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. B-site doping is also considered a new approach to achieving better characteristics of devices based on perovskite NCs, and that was demonstrated for CsPbBr 3 NCs, which are important nanomaterials to produce green-emitting light-emitting diodes (LEDs) [ 12 , 13 , 14 , 15 , 16 , 17 ]. Recently, the doping of CsPbBr 3 NCs with Mn 2+ [ 18 ], Sn 2+ [ 19 ], Ce 3+ [ 20 ], Rb + [ 21 ], and Co 2+ [ 22 ] has been used to enhance the external quantum efficiency (EQE) and maximum luminance of the LEDs.…”

Section: Introductionmentioning

confidence: 99%

Improved One- and Multiple-Photon Excited Photoluminescence from Cd2+-Doped CsPbBr3 Perovskite NCs

et al. 2022

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Metal halide perovskite nanocrystals (NCs) attract much attention for light-emitting applications due to their exceptional optical properties. More recently, perovskite NCs have begun to be considered a promising material for nonlinear optical applications. Numerous strategies have recently been developed to improve the properties of metal halide perovskite NCs. Among them, B-site doping is one of the most promising ways to enhance their brightness and stability. However, there is a lack of study of the influence of B-site doping on the nonlinear optical properties of inorganic perovskite NCs. Here, we demonstrate that Cd2+ doping simultaneously improves both the linear (higher photoluminescence quantum yield, larger exciton binding energy, reduced trap states density, and faster radiative recombination) and nonlinear (higher two- and three-photon absorption cross-sections) optical properties of CsPbBr3 NCs. Cd2+ doping results in a two-photon absorption cross-section, reaching 2.6 × 106 Goeppert-Mayer (GM), which is among the highest reported for CsPbBr3 NCs.

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“…Solution processable perovskites may provide new opportunities for the hierarchical design of responsive polymer composites with complex functions. Perovskites are widely used in photovoltaics 26,27 , lightemitting diodes [28][29][30][31] , display 32 , and photodetectors 33 with long carrier lifetime, high carrier mobility, and high uorescence quantum yield. However, as ionic solids, they are highly sensitive to water, i.e., water can induce (ir)reversible phase change [34][35][36] or even dissociation of the perovskite crystal [37][38][39][40] .…”

Section: Main Textmentioning

confidence: 99%

A Reconfigurable Perovskite/Polymer Composite Film for Real-Time Detection of Agricultural Spraying

Zhang

et al. 2021

Preprint

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Responsive composites that can display sophisticated responses under environmental stimuli are of paramount importance for developing smart materials and systems. However, the hierarchical design of their multiscale constituents to achieve such response remains a challenge. Here, we report a responsive polymer composite obtained by integrating hierarchical interactions between the polymer network meshes, perovskite nanoinclusion, and a microstructured layout. More specific, a layered composite film has been made with perovskite nanoparticles embedded in a hydratable polymer network as the top layer. The perovskites inclusions can undergo a reversible transformation between a nanocrystalline state and a dissociated ion state, triggered by spraying aqueous solutions on the polymer top layer, resulting in an on/off switch of fluorescence at 510 nm. Meanwhile, the surface layer experiences a reconfigurable micro-wrinkling that can gradually change the film transmittance between 90% and 10%. The two orthogonal responses show a good reversibility for at least 15 cycles. They can be manipulated independently as they respond differently to the amount of water applied. We demonstrate the use of such film by real-time, quantitative, and repeatable detection of spraying and subsequent droplet distribution. Such a sensing capability is urgently needed in precision agriculture for fast assessing the deposition quality of pesticides and fertilizers, yet still not available. Our findings enable the design of perovskite-based responsive composites with multiple functions as well as novel device applications in sensors, actuators, and optoelectronics.

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State of the Art and Prospects for Halide Perovskite Nanocrystals

Cited by 743 publications

References 1,329 publications

Self-Assembly and Regrowth of Metal Halide Perovskite Nanocrystals for Optoelectronic Applications

Self-Assembly and Regrowth of Metal Halide Perovskite Nanocrystals for Optoelectronic Applications

Improved One- and Multiple-Photon Excited Photoluminescence from Cd2+-Doped CsPbBr3 Perovskite NCs

A Reconfigurable Perovskite/Polymer Composite Film for Real-Time Detection of Agricultural Spraying

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