A zero-dimensional hybrid lead perovskite with highly efficient blue-violet light emission

Sun, Chen; Jiang, Kuan; Han, Meng-Fei; Liu, Meijun; Lian, Xi-Kai; Jiang, Yongxin; Shi, Hua-Sen; Yue, Cheng‐Yang; Lei, Xiao‐Wu

doi:10.1039/d0tc02351e

Cited by 47 publications

(32 citation statements)

References 41 publications

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“…Lei et al. reported [PbCl 6 ] 4− unit‐based blue‐violet emissive 0D hybrid [BAPrEDA]PbCl 6 (H 2 O) 2 , with small Stokes shift and high PLQY (∼21 %) as shown in Figure 5a and Figure 5b [31] . Recently, Bolink et al.…”

Section: One‐ and Zero‐dimensional (1d And 0d) Metal Halide Hybridsmentioning

confidence: 95%

“…with small Stokes shift and high PLQY (~21 %) as shown in Figure 5a and Figure 5b. [31] Recently, Bolink et al reported 0D mixed-halide hybrid MA 4 PbX 6 • 2H 2 O (MA=[CH 3 NH 3 ] + ; X=Br 1-x I x with 0 < × < 1) that can undergo reversible transformation to 3D MAPbX 3 phase when thermally annealed. [32] Seesaw structured 0D Pb hybrids (C 13 H 19 N 4 ) 2 PbBr 4 and (Bmpip) 2 PbBr 4 both emit blue light under UV excitation with relatively small Stokes shift.…”

Section: S 2 Based 0d Hybrids (Pb 2 + Bi 3 + )mentioning

confidence: 99%

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Low Dimensional, Broadband, Luminescent Organic‐Inorganic Hybrid Materials for Lighting Applications

Kundu

Das

2021

Eur J Inorg Chem

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Low dimensional (low D) organic-inorganic metal halide hybrids are a new class of multifunctional material that boasts facile synthesis, solution processability, structural tunability/versatility, and enabling photophysical properties with myriads of optoelectronic applications. Dimensionality engineering of AMX 3 based 3D perovskites leads to the generation of 2D layered, 1D chain, 0D molecular structures that differ in the extent of connectivity/electronic dimensionality. Increased confinement in bulk low D hybrids fosters strongly bound excitons with unprecedented site isolation/localization. Consequently, low D hybrids exhibit remarkable optoelectronic properties. Given the recent research efforts on low D hybrids, and lacunae in their general design principles, it is indeed timely to review their progress. Here, various low D hybrids (2D, 1D, 0D), their design rationale, their broadband luminescence and its mechanistic origin with special focus to the existing structure-function correlation, and their multifaceted luminescent applications is reviewed. We also provide a glimpse into the current challenges and future prospects of the low D hybrids.

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Section: One‐ and Zero‐dimensional (1d And 0d) Metal Halide Hybridsmentioning

confidence: 95%

Section: S 2 Based 0d Hybrids (Pb 2 + Bi 3 + )mentioning

confidence: 99%

Low Dimensional, Broadband, Luminescent Organic‐Inorganic Hybrid Materials for Lighting Applications

Kundu

Das

2021

Eur J Inorg Chem

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“…For example, Zhou et al synthesized a 0D metal halide of (C 9 NH 20 ) 7 (PbCl 4 )Pb 3 Cl 11 with blue emission band at 470 nm excited by 350 nm UV light sources, and a Stokes shift of 120 nm [16]. Sun et al reported a 0D metal halide of [BAPrEDA]PbCl 6 •(H 2 O) 2 with broadband blue emission peaking at 392 nm excited by 300 nm UV light sources and a Stokes shift of 90 nm [17]. However, in order to obtain 0D metal halides with blue emission, the excitation wavelength needs to have higher energy and the excitation peak is generally less than 350 nm, which is affected by the large Stokes shift of 0D metal halide.…”

Section: Introductionmentioning

confidence: 99%

A Zero-Dimensional Organic Lead Bromide of (TPA)2PbBr4 Single Crystal with Bright Blue Emission

et al. 2022

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Blue-luminescence materials are needed in urgency. Recently, zero-dimensional (0D) organic metal halides have attractive much attention due to unique structure and excellent optical properties. However, realizing blue emission with near-UV-visible light excitation in 0D organic metal halides is still a great challenge due to their generally large Stokes shifts. Here, we reported a new (0D) organic metal halides (TPA)2PbBr4 single crystal (TPA+ = tetrapropylammonium cation), in which the isolated [PbBr4]2− tetrahedral clusters are surrounded by organic ligand of TPA+, forming a 0D framework. Upon photoexcitation, (TPA)2PbBr4 exhibits a blue emission peaking at 437 nm with a full width at half-maximum (FWHM) of 50 nm and a relatively small Stokes shift of 53 nm. Combined with density functional theory (DFT) calculations and spectral analysis, it is found that the observed blue emission in (TPA)2PbBr4 comes from the combination of free excitons (FEs) and self-trapped exciton (STE), and a small Stokes shift of this compound are caused by the small structure distortion of [PbBr4]2− cluster in the excited state confined by TPA molecules, in which the multi-phonon effect take action. Our results not only clarify the important role of excited state structure distortion in regulating the STEs formation and emission, but also focus on 0D metal halides with bright blue emission under the near-UV-visible light excitation.

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“…reported the highest efficient blue‐violet (392 nm) light emission of 0D [BAPrEDA]PbCl 6 ·(H 2 O) 2 with a PL QY of 21.3%, which far exceeds than that of the typical 3D CsPbCl 3 (<5%). [ 66 ] The enhancement of PL QY for the 0D perovskite was attributed to the strong quantum confinement effect of the 0D structure and highly localized electron in isolated [PbCl 6 ] 4− octahedrons. Typical quantum dots with quantum confinement effect have been demonstrated to show markedly decreased PL QY when they are made into solid form, [ 67 ] but the 0D perovskite Cs 4 PbBr 6 solids still maintain high PL QY.…”

Section: Properties Of 0d Perovskitesmentioning

confidence: 99%

“…[ 28a ] The high PL QY in 0D perovskites was due to their dramatically increased exciton binding energy that had been confirmed to be derived from their strong quantum confinement. [ 66 ] Despite 0D perovskites exhibit excellent PL properties, PL regulation/optimization is still of vital importance for these materials to realize commercialization In general, the PL properties can be easily regulated by changing the chemical compositions and the synthetic temperature. Some representative researches on the PL regulation of 0D perovskites in the past several years are discussed below.…”

Section: Properties Of 0d Perovskitesmentioning

confidence: 99%

0D Perovskites: Unique Properties, Synthesis, and Their Applications

et al. 2021

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0D perovskites have gained much attention in recent years due to their fascinating properties derived from their peculiar structure with isolated metal halide octahedra or metal halide clusters. However, the systematic discussion on the crystal and electronic structure of 0D perovskites to further understand their photophysical characteristics and the comprehensive overview of 0D perovskites for their further applications are still lacking. In this review, the unique crystal and electronic structure of 0D perovskites and their diverse properties are comprehensively analyzed, including large bandgaps, high exciton binding energy, and largely Stokes-shifted broadband emissions from self-trapped excitons. Furthermore, the photoluminescence regulation are discussed. Then, the various synthetic methods for 0D perovskite single crystals, nanocrystals, and thin films are comprehensively summarized. Finally, the emerging applications of 0D perovskites to light-emitting diodes, solar cells, detectors, and some others are illustrated, and the outlook on future research in the field is also provided.

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A zero-dimensional hybrid lead perovskite with highly efficient blue-violet light emission

Abstract: Pursuit of high-performance blue light emitting perovskite have attracted intensive attention due to insufficient photoluminescence quantum yield (PLQY) of <5% for CsPbCl3, which far lag behind the near-unit PLQYs (>90%)...

Cited by 47 publications

References 41 publications

Low Dimensional, Broadband, Luminescent Organic‐Inorganic Hybrid Materials for Lighting Applications

Low Dimensional, Broadband, Luminescent Organic‐Inorganic Hybrid Materials for Lighting Applications

A Zero-Dimensional Organic Lead Bromide of (TPA)2PbBr4 Single Crystal with Bright Blue Emission

0D Perovskites: Unique Properties, Synthesis, and Their Applications

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