Mn2+-doped Cs2NaInCl6 double perovskites and their photoluminescence properties

Chen, Luming; Yang, Weiyou; Fu, Hui; Liu, Wenna; Shao, Gang; Tang, Bin; Zheng, Jinju

doi:10.1007/s10853-021-05822-4

Cited by 36 publications

(43 citation statements)

References 39 publications

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“…The EPR spectra showed a six-fold hyperfine coupling pattern, which was the fingerprint of isolated Mn 2+ ions. 21,22 Unlike the PL-inactive pristine Cs 2 AgInCl 6 crystal, the doped crystal exhibited a red emission under an ultra-violet (UV) lamp. The photoluminescence (PL) spectrum showed a broad band centering at 620 nm, ascribable to the 4 T 1 → 6 A 1 transition of Mn 2+ dopants.…”

Section: Resultsmentioning

confidence: 99%

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The making and breaking of perovskite photochromism through doping

Zheng

Zhang

2022

Nanoscale

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Section: Resultsmentioning

confidence: 99%

“…The EPR spectra showed a six-fold hyperfine coupling pattern, which was the fingerprint of isolated Mn 2+ ions. 21,22…”

Section: Resultsmentioning

confidence: 99%

The making and breaking of perovskite photochromism through doping

Zheng

Zhang

2022

Nanoscale

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“…However, these nanoparticle-based afterglow matrices suffered low intensity as a result of the rich quenching sites on the surface of nanoparticles . Alternatively, a wide-bandgap double perovskite has been reported as an efficient host for various doping. , Our group recently reported an afterglow single crystal via a codoping strategy, featuring both a high transparency and long afterglow duration. Through a careful choice of activator ions (Mn 2+ or Yb 3+ ), , the afterglow emission was tuned from the red to infrared region.…”

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confidence: 99%

Mn²⁺-Activated Afterglow in a Transparent Perovskite Crystal

Chen

Wang

Zhang

et al. 2022

J. Phys. Chem. Lett.

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Transparent crystals of long afterglow are keenly desired for advanced applications involving three-dimensional information storage and volumetric display. Here, we report the growth of a perovskite crystal, Cs2NaInCl6:Mn, via a facile hydrothermal reaction. The crystal featured a high transparency up to 90% in a broad range from 400 to 750 nm. Upon ultraviolet (UV) excitation, the crystal exhibited an overlapped emission from both self-trapped exciton (STE) and Mn ions. An unusual energy transfer from Mn ion to STE was revealed through steady-state and transient photoluminescence (PL) spectra. Through concentration tuning, the afterglow duration was extended to 2500 s with a signal-to-noise ratio over 20. The single dopant of Mn ions was found to play two roles in afterglow mechanism, including both electron traps and emitting activators. This work provided a facile method to synthesize transparent crystals of persistent luminescence, opening many avenues for three-dimensional information storage and volumetric display.

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“…For Mn 2+ ‐doped CsPbX 3 NCs, they generally show both host excitonic and Mn 2+ emission simultaneously, 10–12,16 which is quite different to that of Mn 2+ ‐doped II‐VI semiconductors, in which the Mn 2+ PL is largely insensitive to the presence of electronic traps of the host material due to the fast energy transfer process 9 . The dual‐emission in Mn 2+ ‐doped CsPbX 3 NCs means the competitive processes of exciton emission and nonradiative energy transfer from host to Mn 2+ ions during the deactivation process of excited carriers, due to the unusually slow energy transfer from exciton to Mn 2+ caused by the much more ionic of the Mn 2+ bonding in perovskite host 15,25,26 . Therefore, the Mn 2+ PL should be closely related to the defects in the perovskite host lattice.…”

Section: Introductionmentioning

confidence: 99%

“…9 The dual-emission in Mn 2+ -doped CsPbX 3 NCs means the competitive processes of exciton emission and nonradiative energy transfer from host to Mn 2+ ions during the deactivation process of excited carriers, due to the unusually slow energy transfer from exciton to Mn 2+ caused by the much more ionic of the Mn 2+ bonding in perovskite host. 15,25,26 Therefore, the Mn 2+ PL should be closely related to the defects in the perovskite host lattice. Hence, controlling the density of halogen in Mn 2+ -doped perovskite NCs is also one of the most important issues that should be taken into consideration for highly Mn 2+ -emission perovskite NCs.…”

Section: Introductionmentioning

confidence: 99%

Halogen‐content‐dependent photoluminescence of Mn²⁺‐doped CsPbCl₃ nanocrystals

et al. 2022

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The thermodynamically viable halogen vacancy defects in CsPbCl3 perovskite nanocrystals (NCs) are considered the main factor in weakening their optical quality. However, their separate impact on the dopant emission in Mn2+‐doped CsPbCl3 perovskite NCs is still under exploration owing to the absence of comparable samples. Herein, a series of Mn2+‐doped CsPbCl3 samples were synthesized with different oleylamine‐Cl (OAm‐Cl) contents based on a halogen‐hot‐injection strategy. It is found that the Mn2+ concentration of as‐prepared samples fixed at 0.65%, and the Mn2+ photoluminescence (PL) also exhibited an OAm‐Cl content‐independent lifetime of ∼ 1.78 ms, implying the efficient and identical luminescence of isolated Mn2+ ion in all samples. In contrast, the excitonic and Mn2+ PL intensities of the NCs are strong related to the amount of OAm‐Cl, which are attributed to the coordination effect of the suppressed excitonic nonradiative recombination owing to the passivation of chloride vacancies and the enhanced energy transfer from the host exciton to Mn2+ ions in the samples with sufficient OAm‐Cl contents. The temperature‐dependent of Mn2+ PL disclosed an initial increase and was followed by a decrease with increasing temperature for the samples with relatively higher OAm‐Cl contents, while it monotonously decreases for the sample with lower OAm‐Cl content of 0.4 mL. The different PL intensity change trend results from the effective passivation of chloride vacancies by extra OAm‐Cl. Above results present here will help clarify the underlying influence mechanism of halogen vacancy on the PL properties of Mn2+‐doped perovskite NCs, which is essential for targeted modulation of their optical properties.

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Mn2+-doped Cs2NaInCl6 double perovskites and their photoluminescence properties

Cited by 36 publications

References 39 publications

The making and breaking of perovskite photochromism through doping

The making and breaking of perovskite photochromism through doping

Mn²⁺-Activated Afterglow in a Transparent Perovskite Crystal

Halogen‐content‐dependent photoluminescence of Mn²⁺‐doped CsPbCl₃ nanocrystals

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Mn2+-doped Cs2NaInCl6 double perovskites and their photoluminescence properties

Cited by 36 publications

References 39 publications

The making and breaking of perovskite photochromism through doping

The making and breaking of perovskite photochromism through doping

Mn2+-Activated Afterglow in a Transparent Perovskite Crystal

Halogen‐content‐dependent photoluminescence of Mn2+‐doped CsPbCl3 nanocrystals

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Product

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Mn²⁺-Activated Afterglow in a Transparent Perovskite Crystal

Halogen‐content‐dependent photoluminescence of Mn²⁺‐doped CsPbCl₃ nanocrystals