Pressure-Induced Emission Enhancements of Mn<sup>2+</sup>-Doped Cesium Lead Chloride Perovskite Nanocrystals

Cao, Ye; Qi, Guangyu; Sui, Laizhi; Shi, Yue; Geng, Ting; Zhao, Di; Wang, Kai; Yuan, Kaijun; Wu, Guorong; Xiao, Guanjun; Lu, Siyu; Zou, Bo

doi:10.1021/acsmaterialslett.0c00033

Cited by 38 publications

(42 citation statements)

References 42 publications

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“…In some cases, an aromatic ring is attached to a short alkyl chain, which leads to slight changes in color coordinates and distance between Pb–Br slabs ( d ‐spacing). [ 12,30,35 ] Type III organoamines have been rarely studied in 2D layered perovskites, [ 36 ] however, they have been used to produce efficient and thermally stable solar cells when combined with 3D perovskites [ 37 ] and to fabricate bright light‐emitting nanocubes. [ 38 ] The next question we formulate for this type of molecules is the role of the aliphatic chain length (see Figure 1b) concerning the robustness and light emission of the resulting RPLP.…”

Section: Resultsmentioning

confidence: 99%

Engineering the Optical Emission and Robustness of Metal‐Halide Layered Perovskites through Ligand Accommodation

et al. 2021

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opportunities for structural engineering by the diverse choices of chemical composition, [3] and thus, interlayer spacing, and lattice distortions. Ultimately, a controlled variation of these parameters could effectively guide the tailoring of the electronic band structure of RPLP semiconductors. In this context, metal-halide RPLP are of particular interest, as they manifest unique properties, such as quantum and dielectric confinement, [4] narrow-and broadband emission, [5,6] fast radiative recombination, [7] long carrier diffusion lengths, [8] and large exciton binding energies. [9] These properties come along with low-cost processing and simplified device architectures. Besides, the presence of the organic layers provides structural stability and protection from moisture, making them more robust against environmental conditions, which is critical for device performance and lifetime. [10] Due to the stacking configuration of RPLP-with relatively strong organicinorganic interconnectivity-the type of organoammonium molecule plays a fundamental role in their photophysics. [11] For example, by introducing phenethylammonium in the Pb-Br system, the resulting RPLP can show four times higher emission efficiency in the deep blue region compared to butylammonium, a behavior that is related to the high lattice rigidity provided by Pb-Br-π stacking and reduced electron-phonon interaction in the phenethylammonium-basedThe unique combination of organic and inorganic layers in 2D layered perovskites offers promise for the design of a variety of materials for mechatronics, flexoelectrics, energy conversion, and lighting. However, the potential tailoring of their properties through the organic building blocks is not yet well understood. Here, different classes of organoammonium molecules are exploited to engineer the optical emission and robustness of a new set of Ruddlesden-Popper metal-halide layered perovskites. It is shown that the type of molecule regulates the number of hydrogen bonds that it forms with the edge-sharing [PbBr 6 ] 4octahedra layers, leading to strong differences in the material emission and tunability of the color coordinates, from deep-blue to pure-white. Also, the emission intensity strongly depends on the length of the molecules, thereby providing an additional parameter to optimize their emission efficiency. The combined experimental and computational study provides a detailed understanding of the impact of lattice distortions, compositional defects, and the anisotropic crystal structure on the emission of such layered materials. It is foreseen that this rational design can be extended to other types of organic linkers, providing a yet unexplored path to tailor the optical and mechanical properties of these materials and to unlock new functionalities.

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Section: Resultsmentioning

confidence: 99%

Engineering the Optical Emission and Robustness of Metal‐Halide Layered Perovskites through Ligand Accommodation

et al. 2021

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“…observed the unique pressure‐induced emission enhancement (PIEE) in Mn 2+ ‐doped CsPbCl 3 NCs. [ 151 ] The PIEE of CsPb x Mn 1– x Cl 3 NCs was caused by improved energy release from Mn 2+ d–d orbital transition due to the pressure‐induced isostructural phase transition (Figure 8d,e). The PL still exists when the pressure is up to 20 GPa, and such high pressure makes them exhibit remarkable applications in pressure sensors, pressure switches, and anti‐counterfeiting labels.…”

Section: Mn2+‐doped Luminescent Halide Perovskites With Different Strmentioning

confidence: 99%

“…d,e) PL spectra of CsPb x Mn 1– x Cl 3 NCs under the different pressures. [ 151 ] The inset of panel (e) is the PL spectrum of CsPbCl 3 NCs at 1 atm. The right panels show the optical microscopic images of CsPb x Mn 1– x Cl 3 NCs at different pressures.…”

Section: Mn2+‐doped Luminescent Halide Perovskites With Different Strmentioning

confidence: 99%

Mn²⁺‐Doped Metal Halide Perovskites: Structure, Photoluminescence, and Application

Zhou

Huang

et al. 2020

Laser & Photonics Reviews

205

146

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Doping impurity ions into semiconductor luminescent materials offers a unique pathway for inducing new emission centers and enabling photoluminescence (PL) tuning. Among various luminescence materials, doping Mn2+ into metal halide perovskites becomes a hot topic since Mn2+ ions demonstrate an energy transfer route from host to dopants, resulting in interesting photophysical properties. This review aims to discuss the PL properties of Mn2+ ions in halide perovskites nanocrystals or bulk crystals with different structural dimensions and local environments (MnX42– tetrahedron, MnX62– octahedron, or shortest Mn─Mn distance). In this regard, the effects of Mn2+ doping on the PL properties and their modifications are summarized. Variable ion exchange dynamics, increased emission intensity, and enhanced stability induced by Mn2+ doping are analyzed. These results also provide beneficial insights into applications of the doped luminescent halide perovskites. Finally, the present challenges in Mn2+‐doped luminescent halide perovskites are elaborated.

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“…reported the unique pressure‐induced emission enhancement of CsPb x Mn 1− x Cl 3 NCs. [ 28 ] Furthermore, Zhang et al. reported that thermally annealed Mn 2+ :CsPbCl 3 NCs gained higher electrical conductivity and improved photoelectric response compared to the ambient state before compression.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photoluminescence and Photoresponsiveness of Eu³⁺ Ions‐Doped CsPbCl₃ Perovskite Quantum Dots under High Pressure

Jing

Zhou

Sun

et al. 2021

Adv Funct Materials

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Metal halide perovskite quantum dots (QDs) have garnered tremendous attention in optoelectronic devices owing to their excellent optical and electrical properties. However, these perovskite QDs are plagued by pressure‐induced photoluminescence (PL) quenching, which greatly restricts their potential applications. Herein, the unique optical and electrical properties of Eu3+‐doped CsPbCl3 QDs under high pressure are reported. Intriguingly, the PL of Eu3+ ions displays an enhancement with pressure up to 10.1 GPa and still preserves a relatively high intensity at 22 GPa. The optical and structural analysis indicates that the sample experiences an isostructural phase transition at approximately 1.53 GPa, followed by an amorphous state evolution, which is simulated and confirmed through density functional theory calculations. The pressure‐induced PL enhancement of Eu3+ ions can be associated with the enhanced energy transfer rate from excitonic state to Eu3+ ions. The photoelectric performance is enhanced by compression and can be preserved upon the release of pressure, which is attributed to the decreased defect density and increased carrier mobility induced by the high pressure. This work enriches the understanding of the high‐pressure behavior of rare‐earth‐doped luminescent materials and proves that high pressure technique is a promising way to design and realize superior optoelectronic materials.

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Pressure-Induced Emission Enhancements of Mn²⁺-Doped Cesium Lead Chloride Perovskite Nanocrystals

Cited by 38 publications

References 42 publications

Engineering the Optical Emission and Robustness of Metal‐Halide Layered Perovskites through Ligand Accommodation

Engineering the Optical Emission and Robustness of Metal‐Halide Layered Perovskites through Ligand Accommodation

Mn²⁺‐Doped Metal Halide Perovskites: Structure, Photoluminescence, and Application

Enhanced Photoluminescence and Photoresponsiveness of Eu³⁺ Ions‐Doped CsPbCl₃ Perovskite Quantum Dots under High Pressure

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Pressure-Induced Emission Enhancements of Mn2+-Doped Cesium Lead Chloride Perovskite Nanocrystals

Cited by 38 publications

References 42 publications

Engineering the Optical Emission and Robustness of Metal‐Halide Layered Perovskites through Ligand Accommodation

Engineering the Optical Emission and Robustness of Metal‐Halide Layered Perovskites through Ligand Accommodation

Mn2+‐Doped Metal Halide Perovskites: Structure, Photoluminescence, and Application

Enhanced Photoluminescence and Photoresponsiveness of Eu3+ Ions‐Doped CsPbCl3 Perovskite Quantum Dots under High Pressure

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Pressure-Induced Emission Enhancements of Mn²⁺-Doped Cesium Lead Chloride Perovskite Nanocrystals

Mn²⁺‐Doped Metal Halide Perovskites: Structure, Photoluminescence, and Application

Enhanced Photoluminescence and Photoresponsiveness of Eu³⁺ Ions‐Doped CsPbCl₃ Perovskite Quantum Dots under High Pressure