Synthesis of Organic–Inorganic Lead Halide Perovskite Nanoplatelets: Towards High‐Performance Perovskite Solar Cells and Optoelectronic Devices

Ha, Son Tung; Liu, Xinfeng; Zhang, Qing; Giovanni, David; Sum, Tze Chien; Xiong, Qihua

doi:10.1002/adom.201400106

Cited by 390 publications

(325 citation statements)

References 37 publications

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“…In light of this, perovskite NCs have also been employed as broadband photodetectors, even though this research field is rather new. 119,120 Yang and colleagues 121 reported solution-processed photodetectors based on MAPbI 3-x Cl x thin films with an inverted device configuration made of glass/ITO/PEDOT:PSS/MAPbI 3-x Cl x /PCBM ([6,6]-Phenyl-C61-butyric acid methyl ester)/PFN poly[(9,9-bis (30- (N,N-dimethylamino) propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)] (hole blocking layer)/Al. The photodetector operating at room temperature showed excellent detection sensitivity approaching 10 14 Jones with a fast photoresponse and a linear dynamic range over 100 dB.…”

Section: Perovskite Ncs In Solar Cells and Photodiodesmentioning

confidence: 99%

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

et al. 2016

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Lead halide perovskite nanocrystals (NCs) are receiving a lot of attention nowadays, due to their exceptionally high photoluminescence quantum yields reaching almost 100% and tunability of their optical band gap over the entire visible spectral range by modifying composition or dimensionality/size. We review recent developments in the direct synthesis and ion exchange-based reactions, leading to hybrid organic-inorganic (CH 3 NH 3 PbX 3 ) and all-inorganic (CsPbX 3 ) lead halide (X = Cl, Br, I) perovskite NCs, and consider their optical properties related to quantum confinement effects, single emission spectroscopy and lasing. We summarize recent developments on perovskite NCs employed as an active material in several applications such as light-emitting devices, solar cells and photodetectors, and provide a critical outlook into the existing and future challenges.

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Section: Perovskite Ncs In Solar Cells and Photodiodesmentioning

confidence: 99%

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

et al. 2016

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“…CH 3 NH 3 PbI 3 nanoplatelets were grown on muscovite mica utilizing van der Waals epitaxial growth followed by thermally intercalating methylammonium halides. 45 CH 3 NH 3 PbBr 3 nanocrystals were synthesized using a medium size ammonium bromide-capping agent. 42 CH 3 NH 3 PbI 3 nanocrystals and nanorods were synthesized using solvents with varying polarities or by transformation from PbI 2 crystals.…”

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confidence: 99%

Shape Evolution and Single Particle Luminescence of Organometal Halide Perovskite Nanocrystals

et al. 2015

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Organometallic halide perovskites CH 3 NH 3 PbX 3 (X = I, Br, Cl) have quickly become one of the most promising semiconductors for solar cells, with photovoltaics made of these materials reaching power conversion efficiencies of near 20%. Improving our ability to harness the full potential of organometal halide perovskites will require more controllable syntheses that permit a detailed understanding of their fundamental chemistry and photophysics. In this manuscript, we systematically synthesize CH 3 NH 3 PbX 3 (X = I, Br) nanocrystals with different morphologies (dots, rods, plates or sheets) by using different solvents and capping ligands. CH3NH3PbX3 nanowires and nanorods capped with octylammonium halides show relatively higher photoluminescence (PL) quantum yields and long PL lifetimes. CH3NH3PbI3 nanowires monitored at the single particle level show shape-correlated PL emission across whole particles, with little photobleaching observed and very few off periods. This work highlights the potential of low-dimensional organometal halide perovskite semiconductors in constructing new porous and nanostructured solar cell architectures, as well as in applying these materials to other fields such as light-emitting devices and single particle imaging and tracking.Keywords organometal halide perovskites, nanocrystals, preferred orientation, morphology control, size control, single particle photoluminescence Disciplines Chemistry CommentsReprinted (adapted) with permission from ACS Nano 9 (2015) 15,16 respectively, as well as high absorption coefficients. Critically, organolead perovskites have very long electronÀ hole carrier diffusion lengths, exceeding 1 μm in CH 3 NH 3 PbI 3-x Cl x , and 100 nm in CH 3 NH 3 PbI 3 , which in principle allows for the development of several solar cell architectures including perovskite-sensitized solar cells, planar heterojunction solar cells, and meso-and nanostructured solar cells. 17 Building on the dramatic improvement of solar cell performance using the solid hole conductor spiro-OMeTAD instead of a liquid electrolyte (spiro-OMeTAD stands for 2,2 0 -7,7 0 -tetrakis(N,N-di-p-methoxy-phenylamine)-9,9 0 -spirobifluorene), 18 the energy conversion efficiency of photovoltaics made from these intensely absorbing, visible-active semiconductors has risen from 3.8% to near 20% in only four years. 19,20 Photovoltaic performance depends critically on perovskite composition, crystallinity and morphology. 21À23 Higher perovskite film uniformity leads to lower recombination rates in planar heterojuction solar cells. 24,25 Film uniformity is affected by factors such as precursor composition, annealing temperature and, if applicable, solvent used during the vapor-assisted or spin coating deposition process. 6,24,26À32 Highly efficient mesostructured solar cells are produced by a twostep deposition process. 33À35 Vapor-assisted methods and additives provide the means * Address correspondence to jwp@iastate.edu, esmith1@iastate.edu, vela@iastate.edu.Received for review December 9, 2014 a...

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“…Ha et al first reported the preparation of CH 3 NH 3 PbX 3 nanoplatelets via a gas-solid heterophase reaction, [48] as illustrated in Figure 3a. By means of VDW epitaxy, lead halide nanoplatelets were initially grown on muscovite mica and then were converted into perovskites via gas-solid reaction with CH 3 NH 3 X.…”

Section: Vapor-phase Methodsmentioning

confidence: 99%

“…The resulting nanoplatelets had the lateral dimension in the range of 5-30 μm and the thickness from several atomic layers to several 100 nm. CH 3 NH 3 PbI 3 nanoplatelets exhibited a large diffusion length of ~200 nm (Figure 3b) [48].…”

Section: Vapor-phase Methodsmentioning

confidence: 99%

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Two-Dimensional Halide Perovskites for Emerging New- Generation Photodetectors

Tang¹,

Cao²,

Chi³

2018

Two-Dimensional Materials for Photodetector

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Compared to their conventional three-dimensional (3D) counterparts, two-dimensional (2D) halide perovskites have attracted more interests recently in a variety of areas related to optoelectronics because of their unique structural characteristics and enhanced performances. In general, there are two distinct types of 2D halide perovskites. One represents those perovskites with an intrinsic layered crystal structure (i.e. MX 6 layers, M = metal and X = Cl, Br, I), the other defines the perovskites with a 2D nanostructured morphology such as nanoplatelets and nanosheets. Recent studies have shown that 2D halide perovskites hold promising potential for the development of new-generation photodetectors, mainly arising from their highly efficient photoluminescence and absorbance, color tunability in the visible-light range and relatively high stability. In this chapter, we present the summary and highlights of latest researches on these two types of 2D halide perovskites for developing photodetectors, with an emphasis on synthesis methods, structural characterization, optoelectronic properties, and theoretical analysis and simulations. We also discuss the current challenging issues and future perspective. We hope this chapter would add new elements for understanding halide perovskite-based 2D materials and for developing their more efficient optoelectronic devices.

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Synthesis of Organic–Inorganic Lead Halide Perovskite Nanoplatelets: Towards High‐Performance Perovskite Solar Cells and Optoelectronic Devices

Cited by 390 publications

References 37 publications

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

Shape Evolution and Single Particle Luminescence of Organometal Halide Perovskite Nanocrystals

Two-Dimensional Halide Perovskites for Emerging New- Generation Photodetectors

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