Enhanced Exciton‐to‐Mn<sup>2+</sup> Energy Transfer in 3D/0D Cesium–Lead–Chloride Composite Perovskites

Zhong, Chu‐Yao; Li, Ladi; Chen, Qing; Jiang, Kai‐Zhe; Li, F.; Liu, Zhao‐Qing; Chen, Yibo

doi:10.1002/adom.202202321

Cited by 12 publications

(7 citation statements)

References 47 publications

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“…The X-ray photoelectron spectroscopy (XPS) spectra of the single-phase and composite samples are shown in Figure e,f and Figure S5. The Br 3d 3/2 and Br 3d 5/2 peaks of the CsPbBr 3 nanocrystals are located at 67.83 and 68.85 eV. , In CsPbBr 3 @MnO 2 -M, the binding energy of Br 3d 5/2 shifts 0.24 eV toward a higher value compared to that in the CsPbBr 3 nanocrystals. In the Mn 2p 3/2 spectrum of h -MnO 2 , the peaks at 641.26/652.66, 642.33/653.92, and 643.86/654.88 eV correspond to Mn(II), Mn(III), and Mn(IV), respectively. , After integrating with CsPbBr 3 , the h -MnO 2 shows an increased proportion of Mn(II), suggesting a reduction in the valence state of Mn.…”

Section: Resultsmentioning

confidence: 88%

“…The Br 3d 3/2 and Br 3d 5/2 peaks of the CsPbBr 3 nanocrystals are located at 67.83 and 68.85 eV. 28,29 In CsPbBr 3 @MnO 2 -M, the binding energy of Br 3d 5/2 shifts 0.24 eV toward a higher value compared to that in the CsPbBr 3 nanocrystals. In the Mn 2p 3/2 spectrum of h-MnO 2 , the peaks at 641.26/652.66, 642.33/653.92, and 643.86/ 654.88 eV correspond to Mn(II), Mn(III), and Mn(IV), respectively.…”

Section: Construction Of the Yolk−shell Nanostructurementioning

confidence: 95%

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Designing Yolk–Shell Nanostructures for Reversible Water-Vapor-Responsive Dual-Mode Switching of Fluorescence and Structural Color

Zuo,

Feng,

Peng

et al. 2024

ACS Nano

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Metal halide perovskites offer ample opportunities to develop advanced optoelectronic devices. This work showcases that the integration of metal halide perovskites into metal oxide nanoshells with controllable interior cavities can enable water-vapor-responsive dual-mode switching of fluorescence and structural color. Through a ship-in-a-bottle method to introduce a controlled amount of CsPbBr 3 into MnO 2 nanoshells, we have designed CsPbBr 3 @MnO 2 yolk−shell nanostructures, which can uptake a defined amount of water to exhibit rapid (less than 1 s) and reversible (≥100 cycles) responses in both fluorescence on−off and color change when exposed to dynamic water vapor. These responses originate from the water-triggered phase transformation of CsPbBr 3 to CsPb 2 Br 5 and the structural color change of the MnO 2 shell. The altered electronic and bonding structure at the oxide−halide interface, rapid water accumulation in the yolk−shell cavity, and protective effect of the oxide shell facilitate the reversible transformations. The response characteristics of the yolk−shell nanostructures have been further demonstrated in fabricating patterned films capable of multiple fluorescence/structural color responses, highlighting their potential for applications in advanced anticounterfeiting and encryption.

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Section: Resultsmentioning

confidence: 88%

Section: Construction Of the Yolk−shell Nanostructurementioning

confidence: 95%

Designing Yolk–Shell Nanostructures for Reversible Water-Vapor-Responsive Dual-Mode Switching of Fluorescence and Structural Color

Zuo,

Feng,

Peng

et al. 2024

ACS Nano

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“…With rising Bi 3+ concentration, the average lifetime of Mn 2+ increased from 6.0 μs for single Mn 2+ -doped MCs to 21.0 μs for Cs 2 In 0.45 Bi 0.55 Cl 5 ·H 2 O:17%Mn MCs and has a variation tendency similar to its emission intensity. The prolonged Mn 2+ lifetime could be assigned to the ET from the [BiCl 6 ] 3– unit, which acts as UV light absorber and exciton donor, to [MnCl 6 ] 4– and results in the enhanced concentration of electrons in the excited state, improving the 4 T 1g – 6 A 1g transition process in Mn 2+ . ,− …”

Section: Resultsmentioning

confidence: 99%

Enhancing Photoluminescence and Stability of Mn-Doped Cs₂InCl₅·H₂O Microcrystals with Introduced Bi³⁺ Ion

et al. 2023

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In this work, lead-free zero-dimensional (0D) all-inorganic perovskite Mn 2+ -doped Cs 2 InCl 5 •H 2 O microcrystals (MCs) with introduced Bi 3+ ion were synthesized by supersaturation recrystallization at room temperature. The electronic bandgap of the MCs is tuned from ∼5.1 to ∼3.1 eV, and the electronic absorption is enhanced in the 200−400 nm region by Bi 3+ incorporation. Upon excitation at 365 nm, the MCs with introduced Bi 3+ exhibit strong red emission peaking at 640 nm, which is attributed to the Mn 2+ transition ( 4 T 1g → 6 A 1g ). Simultaneous Mn 2+ and Bi 3+ incorporation into Cs 2 InCl 5 •H 2 O shows 60 times enhancement of the 640 nm emission band compared to Mn 2+ alone. This PL enhancement is attributed to the energy transfer (ET) from the [BiCl 6 ] 3− octahedron, which acts as a UV light absorber and exciton donor, to [MnCl 6 ] 4− . In addition, a yellow-lightemitting diode (LED) device based on the Cs 2 In 0.45 Bi 0.55 Cl 5 •H 2 O:17%Mn MCs was fabricated and evaluated, showing high color saturation at a drive current of 420 mA and good stability. This study demonstrates a new method for achieving efficient red emission by incorporating ns 2 metal ions and Mn ions in 0D lead-free metal halides.

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“…Phosphors that could be excited by 650–900 nm and emit in the range of 800–1000 nm are promising materials for the biomedical field, since this spectral property minimizes tissue absorption. Meanwhile, the long lifetime of NIR emission could avoid the interference of background emission from biological matrices. − Other potential applications of these NIR emitters are NIR spectroscopy in night-vision imaging and nondestructive testing . Cr 3+ ion is the most widely used TM ion as the NIR emitting center, due to its high emission intensity and tunable wavelength from its 3 d 3 electron configurations. , However, it is toxic to the environment and living organisms, while it is easy to oxidate with a relatively low stability.…”

Section: Resultsmentioning

confidence: 99%

From Ancient Blue Pigment to Unconventional NIR Phosphor: A Thermal-Stable Near-Infrared I/II Broadband Emission from Ca_1–xSr_xCuSi₄O₁₀ Solid Solution

Huang,

Zhang,

Fan

et al. 2023

Inorg. Chem.

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Phosphors used in NIR spectroscopy require broadband emission, high external quantum yield, good ability, as well as a tunable spectral range to meet the detection criteria. Two-dimensional copper silicates MCuSi 4 O 10 (M = Ca, Sr, Ba) play an important part in ancient art and technology as synthetic blue pigments. In the recent years, these compounds were reported to show a broad near-infrared emission when excited in the visible region. Inspired by the tunable structure of MCuSi 4 O 10 , a series of broadband phosphors Ca 1−x Sr x CuSi 4 O 10 were designed for realizing continuously tunable NIR emission by a modulated Cu 2+ crystal field environment. The emission maximum exhibits a red shift from 915 to 950 nm and the integral intensity enhances as the Sr 2+ content varies in the range of 0−0.50, which is led by the lattice expansion and the following weakened crystal field splitting on tetrahedral-coordinated Cu 2+ . Compared to CaCuSi 4 O 10 , the optimized sample Ca 0.5 Sr 0.5 CuSi 4 O 10 shows enhanced NIR emission by about 2.0-fold. It exhibits quite a high external quantum efficiency covering the NIR-I and -II regions (λ max = 950 nm, fwhm = 135 nm, EQE = 26.3%) with a strong absorption efficiency (74.7%) and a long excited-state lifetime (134 μs). These solid-solution phosphors (x = 0.0−0.5) show excellent thermal stability and maintain over 50% of the RT intensity at 200 °C. The optimized phosphor was encapsulated with redlight chips to fabricate NIR pc-LED and put into night-vision application. These good properties make these Cu 2+ -activated NIR phosphors appealing for multiple applications such as nondestructive testing, night version, lasers, and luminescent solar concentrators.

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Enhanced Exciton‐to‐Mn²⁺ Energy Transfer in 3D/0D Cesium–Lead–Chloride Composite Perovskites

Cited by 12 publications

References 47 publications

Designing Yolk–Shell Nanostructures for Reversible Water-Vapor-Responsive Dual-Mode Switching of Fluorescence and Structural Color

Designing Yolk–Shell Nanostructures for Reversible Water-Vapor-Responsive Dual-Mode Switching of Fluorescence and Structural Color

Enhancing Photoluminescence and Stability of Mn-Doped Cs₂InCl₅·H₂O Microcrystals with Introduced Bi³⁺ Ion

From Ancient Blue Pigment to Unconventional NIR Phosphor: A Thermal-Stable Near-Infrared I/II Broadband Emission from Ca_1–xSr_xCuSi₄O₁₀ Solid Solution

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Enhanced Exciton‐to‐Mn2+ Energy Transfer in 3D/0D Cesium–Lead–Chloride Composite Perovskites

Cited by 12 publications

References 47 publications

Designing Yolk–Shell Nanostructures for Reversible Water-Vapor-Responsive Dual-Mode Switching of Fluorescence and Structural Color

Designing Yolk–Shell Nanostructures for Reversible Water-Vapor-Responsive Dual-Mode Switching of Fluorescence and Structural Color

Enhancing Photoluminescence and Stability of Mn-Doped Cs2InCl5·H2O Microcrystals with Introduced Bi3+ Ion

From Ancient Blue Pigment to Unconventional NIR Phosphor: A Thermal-Stable Near-Infrared I/II Broadband Emission from Ca1–xSrxCuSi4O10 Solid Solution

Contact Info

Product

Resources

About

Enhanced Exciton‐to‐Mn²⁺ Energy Transfer in 3D/0D Cesium–Lead–Chloride Composite Perovskites

Enhancing Photoluminescence and Stability of Mn-Doped Cs₂InCl₅·H₂O Microcrystals with Introduced Bi³⁺ Ion

From Ancient Blue Pigment to Unconventional NIR Phosphor: A Thermal-Stable Near-Infrared I/II Broadband Emission from Ca_1–xSr_xCuSi₄O₁₀ Solid Solution