Highly efficiency blue emissive from Bi3+ions in zero-dimensional organic bismuth halide for white LED applications

Review Chemistry, Multidisciplinary

Broadband Emission Origin in Metal Halide Perovskites: Are Self-Trapped Excitons or Ions?

Feng Jiang et al.

Summary: The appearance of metal halide perovskites allows for efficient and broadband emission in single-component materials. The characteristics of self-trapped excitons and ns(2) ions play important roles in achieving broadband emission.

ADVANCED MATERIALS (2023)

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Article Materials Science, Multidisciplinary

A Mechanochemically Synthesized Hybrid Bismuth Halide as Highly Efficient Red Phosphor for Blue Chip-Based WLED

Tinghui Zhuang et al.

Summary: This study synthesizes a halide compound called BiBrON through a mechanochemical synthesis method, and it exhibits the highest efficiency and thermal stability among Bi-based halides as a red phosphor in white light-emitting diodes (WLEDs). It has the potential to improve the color rendering index of WLEDs.

ADVANCED OPTICAL MATERIALS (2023)

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Article Chemistry, Physical

Efficient dual-mode emissions of high-concentration erbium ions doped lead-free halide double perovskite single crystals

Jun Zhao et al.

Summary: Lead-free halide double perovskites with doped Er3+ ions exhibit efficient up-conversion and down-shifting emissions. The color of down-shifting luminescence can be controlled by increasing Er3+ ion doping concentration, while near-infrared light suitable for optical communication is emitted with the highest photoluminescence quantum yield reaching 38.36%. The rare earth ions doping in double perovskites shows promising potential for new functionalities in optoelectronic applications.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Article Engineering, Environmental

Highly emissive zero-dimensional antimony halide for anti-counterfeiting and confidential information encryption-decryption

Jian-Qiang Zhao et al.

Summary: This study proposes a controllable information encryption-decryption method based on a reversible photoluminescence switch using 0D hybrid antimony halide, which ensures efficient protection and decoding of confidential information.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

The synthesis of lead-free double perovskite Cs2Ag0.4Na0.6InCl6 phosphor with improved optical properties via ion doping

Kangliang Peng et al.

Summary: Lead-free double perovskite phosphors with improved optical properties were proposed in this study by doping Bi3+, Sm3+, or Mn2+ ions. With the doping of these ions, the photoluminescence properties of the phosphors were significantly enhanced.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Article Chemistry, Physical

Highly Stable and Moisture-Immune Monocomponent White Perovskite Phosphor by Trifluoromethyl (-CF3) Regulation

Weihui Bi et al.

Summary: This study presents hydrophobic, electron-withdrawing trifluoromethyl (-CF3)-modified halide perovskites with ultrahigh stability in water for over two months. The perovskites exhibit broadband white light emission through exciton-phonon coupling. The emission color can be tuned by Mn2+ doping and a high photoluminescence quantum yield can be achieved. Moreover, the perovskites possess an excellent color rendering index and show good stability in long-term operation.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2022)

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Article Chemistry, Physical

Spacer Switched Two-Dimensional Tin Bromide Perovskites Leading to Ambient-Stable Near-Unity Photoluminescence Quantum Yield

Arnab Mandal et al.

Summary: Semiconductor nanostructures with near-unity photoluminescence quantum yields (PLQYs) are crucial for light-emitting diodes and display devices. This study achieved a high PLQY by stabilizing Sn2+ in a perovskite structure, and found that a longer spacer molecule and out-of-plane octahedral tilting favored higher PLQY. Self-trapped excitons (STEs) were also identified and their characteristics under different conditions were analyzed.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2022)

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Article Chemistry, Physical

Emission Mechanism of Self-Trapped Excitons in Sb3+-Doped All- Inorganic Metal-Halide Perovskites

Bo Zhou et al.

Summary: Sb3+ doping in all-inorganic metal-halide perovskites enables highly efficient and color-diverse broadband light emission. The study reveals the origin of this emission and distinguishes various fluorescence components using a lifetime mapping method. The presence of free-exciton emission and self-trapped states is also identified.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2022)

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Article Chemistry, Multidisciplinary

Healthy and stable lighting via single-component white perovskite nanoplates

Hao Cui et al.

Summary: Single-component healthy white light was achieved by post-doping Mn2+ into blue perovskite nanoplates, resulting in improved stability and quality for white light-emitting diodes (WLEDs).

NANOSCALE (2022)

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Article Chemistry, Physical

Broad Photoluminescence and Second-Harmonic Generation in the Noncentrosymmetric Organic-Inorganic Hybrid Halide (C6H5(CH2)4NH3)4MX7•H2O (M = Bi, In, X = Br or I)

Da Chen et al.

Summary: Recent discoveries in organic-inorganic metal halides have revealed superior semiconducting and polarization properties. The structures of these metal halides are diverse and exhibit strong second-harmonic generation (SHG) responses, as well as broad red-light luminescence characteristics.

CHEMISTRY OF MATERIALS (2021)

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Article Chemistry, Physical

Bismuth activated blue phosphor with high absorption efficiency for white LEDs

Quan Dong et al.

Summary: The study successfully designed a blue-emitting phosphor activated by trivalent bismuth with a wide n-UV excitation band and ideal blue emission band. A temperature-sensitive white light-emitting diode (WLED) was fabricated with outstanding optical performance using the optimized composition.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Physical

Composition optimization of lead-free double perovskite Cs2AgIn1-xBixCl6 for efficient and stable photoluminescence

Sen Li et al.

Summary: Lead-free double perovskite Cs2AgIn1-xBixCl6 nanocrystals were optimized via alloying for enhanced photoluminescence quantum yield, showing broad band orange emission; Time-resolved PL and femtosecond TA techniques were employed to study exciton recombination dynamics; The resulting Cs2AgIn0.8Bi0.2Cl6 products exhibited remarkable stability and potential for solid-state lighting application.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Multidisciplinary

Atomically Thin Sheets of Lead-Free 1D Hybrid Perovskites Feature Tunable White-Light Emission from Self-Trapped Excitons

Philip Klement et al.

Summary: The research demonstrates the unique optical properties of single layers of 1D organic-inorganic perovskites, including self-trapped excitons and white-light emission. The thickness dependence of the structure leads to a significant shift in emission energy, challenging conventional understanding.

ADVANCED MATERIALS (2021)

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Review Materials Science, Multidisciplinary

An Overview for Zero-Dimensional Broadband Emissive Metal-Halide Single Crystals

Lei Zhou et al.

Summary: Low-dimensional metal-halide single crystals, particularly the zero-dimensional materials, have shown promising light emission properties with broad luminescence spectra and high color rendition. Despite the strong quantum confinement and electron-phonon coupling, the exploration of 0D structures remains limited.

ADVANCED OPTICAL MATERIALS (2021)

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Article Materials Science, Multidisciplinary

Broadband light emitting zero-dimensional antimony and bismuth-based hybrid halides with diverse structures

Chenkai Deng et al.

Summary: This study presents a series of new zero-dimensional organic-inorganic hybrid metal halides and investigates their crystal structures and photoluminescent properties. Among these compounds, (TMEDA)(3)Sb2Br12·H2O exhibits the most intense luminescence.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Review Chemistry, Multidisciplinary

Recent progress of zero-dimensional luminescent metal halides

Mingze Li et al.

Summary: This review summarizes the characteristics of zero-dimensional metal halides, including the classification of all-inorganic and organic-inorganic hybrid metal halides, and emphasizes the role of B-site cations in the photoluminescence process. It also discusses the self-trapped excitons model and photoluminescence regulation engineering to explore their unique photoluminescence properties and new application prospects.

CHEMICAL SOCIETY REVIEWS (2021)

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Review Chemistry, Physical