Bi3+‐Er3+ and Bi3+‐Yb3+ Codoped Cs2AgInCl6 Double Perovskite Near‐Infrared Emitters

Arfin, Habibul; Kaur, Jagjit; Sheikh, Tariq; Chakraborty, Sudip; Nag, Angshuman

doi:10.1002/anie.202002721

Cited by 265 publications

(191 citation statements)

References 52 publications

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“…In other words, Bi 3+ dopants act as sensitizing centers for the Er 3+ ‐related NIR emission that leads to both intensity enhancement and decay slowdown of the NIR PL. [ 133 ] The doping by NIR‐emitting Yb 3+ lanthanide was extended for different double halide perovskite compositions. Chen et al studied the doping of Cs 2 AgBiCl 6 (X = Cl, Br) PNCs with Yb 3+ and Mn 2+ ions (Figure 6c).…”

Section: Broadly Tunable Emission Toward Nirmentioning

confidence: 99%

Halide Perovskite Nanocrystal Emitters

Liu

Grandhi

Matta

et al. 2021

Advanced Photonics Research

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The increasing attention on halide perovskite nanocrystals (PNCs) stems from their outstanding optoelectronic properties, especially the intriguing photoluminescence (PL) features. The high photoluminescence quantum yields (up to unity) of PNCs, and the tunability of their optical bandgaps by composition engineering and quantum confinement effects, account for the demonstrated great potential in several optoelectronic applications, such as light‐emitting diodes (LEDs), phosphors, lasers, and photodetectors. However, despite the rapid growth of this research field, several questions are still left unanswered and there is room for further improving the luminescence performance, particularly for emerging lead‐free PNC compositions. Herein, the recent advances in the light emission phenomena in PNCs are discussed. A special focus is given to the correlation between PL and phase transition, the dual‐color emission, the tunability of the PL toward near‐infrared (NIR), and the thermal quenching effect. The key research findings on LEDs, the major application of perovskite‐based nanoscale emitters, are also outlined. Finally, the view on the most urgent challenges to be addressed is provided, with the intent of promoting a more profound understanding of PNC emission‐related phenomena in the future.

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Section: Broadly Tunable Emission Toward Nirmentioning

confidence: 99%

Halide Perovskite Nanocrystal Emitters

Liu

Grandhi

Matta

et al. 2021

Advanced Photonics Research

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“…[ 190 ] Surprisingly, Bi 3+ –Er 3+ ‐codoped Cs 2 AgInCl 6 HDP SCs have a more efficient NIR emission (≈45 times higher integrated emission intensity) because Bi 3+ codoping decreases the excitation (absorption) energy such that the samples can be excited with 370 nm light. [ 191 ] The luminescence of Er 3+ ‐doped HDPs can exceed to ≈1540 nm. The success confirms Bi doping is a general strategy to modify the excitation of HDPs to burst more efficient STEs or doped emission.…”

Section: Optical Properties Of Hdpsmentioning

confidence: 99%

Lead‐Free Halide Double Perovskites: Structure, Luminescence, and Applications

Zeng

2020

Small Structures

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Organic–inorganic halide perovskites have attracted extensive attention due to their excellent optoelectronic properties. However, the toxicity of heavy atom Pb2+ and instability overshadow further commercial applications, motivating researchers to explore alternative analogues to overcome these disadvantages. Lead‐free halide double perovskites (HDPs), sharing similar crystal structures with organic–inorganic halide perovskites, are promising candidates for optoelectronic applications. However, HDPs possess unique properties that are uncommon in organic–inorganic halide perovskites deriving from feasible component engineering and strong electron–phonon interaction. Bright luminescence in HDPs originates from self‐trapped excitons (STEs) and sensitized dopants can cover the full visible and near‐infrared ray (NIR) gamut by modulating parity‐forbidden transitions and the energy‐transfer process. The superior optoelectronic characteristics of HDPs further extend applications on self‐assembly, white‐light phosphors, NIR bioimaging, and scintillators, in comparison to organic–inorganic halide perovskites. Herein, the structural diversity, tunable luminescence, photophysical mechanism of STEs, charge‐carrier dynamics, size effect, and stability issues of HDPs are discussed. The challenges and outlook for further investigations are also given, which may help in discovering new analogues and boosting the photoluminescence quantum yield and stability of HDPs.

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“…[ 26,27,137 ] For example, Er 3+ is usually applied as an optical activator in RE and can be used for producing UC and DC emissions. [ 138–140 ] As shown in Figure a,b, Hao et al. first achieved both UC and DC luminescence located in NIR spectral range in Er 3+ ‐doped MoS 2 excited by 980 nm laser.…”

Section: Properties and Applicationsmentioning

confidence: 99%

Recent Advances in 2D Rare Earth Materials

Chen

Han

Zhao

et al. 2020

Adv Funct Materials

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2D rare earth (RE) materials have received considerable attention in recent years due to the fascinating luminescence, magnetism, and electric properties originated from RE associated with sharp and various emission peaks, intrinsic 2D ferromagnetism, and incommensurate charge density wave. These materials might open up a new prospect in next‐generation lighting, magnetic devices, and phototransistors. Herein, a comprehensive review of 2D RE materials is presented, focusing on their recent progresses. First, the crystal structures of 2D RE materials are discussed. Then, typical synthesis methods such as mechanical exfoliation, molecular beam epitaxy, pulsed laser deposition, and chemical vapor deposition are introduced. Furthermore, various properties in luminescence, magnetism, and electronics are summarized. The recently reported RE‐based 2D novel photodetectors are outlined as three constructions: MoS2/RE, graphene/RE, and perovskite/RE, which show promising applications for both narrow and broad band detection arised from the special absorption windows of different RE elements. Finally, the conclusions and outlook of this area are proposed, such as exploring novel 2D RE compounds, improving stability, and broadening applications.

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Bi³⁺‐Er³⁺ and Bi³⁺‐Yb³⁺ Codoped Cs₂AgInCl₆ Double Perovskite Near‐Infrared Emitters

Cited by 265 publications

References 52 publications

Halide Perovskite Nanocrystal Emitters

Halide Perovskite Nanocrystal Emitters

Lead‐Free Halide Double Perovskites: Structure, Luminescence, and Applications

Recent Advances in 2D Rare Earth Materials

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