4.7 Article

Excitation wavelength dependent triple-mode photoluminescence of copper-based halides for advanced anti-counterfeiting

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Optics

Defect emission in Cs3Cu2I5 and CsCu2I3 halide films

Kexin Zhang et al.

Summary: The defect emission mechanism of Cs3Cu2I5 and CsCu2I3 is investigated in this study, revealing that iodine vacancies may be related to their emission mechanism. The increase in defect concentration leads to an increase in emission intensity, while iodination treatment results in emission quenching. These findings have significant implications for the application of Cs3Cu2I5 and CsCu2I3.

JOURNAL OF LUMINESCENCE (2023)

Article Chemistry, Physical

Phonon-Assisted Upconversion Photoluminescence of a Self-Trapped Exciton in the Rb2CuCl3 Single Crystal

Kai-Xuan Xu et al.

Summary: Phonon-assisted upconversion photoluminescence (UCPL) plays a crucial role in various fields. In this study, Rb2CuCl3 single crystals (SCs) were synthesized, which showed high PLQY and efficient phonon-assisted UCPL at room temperature. Optical thermometry sensitivity of the SCs was measured to be up to 6 mK at 295 K. The study also suggests the possibility of net cooling by improving the PLQY with 345 nm excitation. These findings open up a new path to explore laser cooling in STE systems.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2023)

Article Engineering, Environmental

High-performance self-powered UV photodetector based on CuI/CsCu2I3/GaN heterojunction

Xiaoyu Zhou et al.

Summary: This study successfully grows nontoxic copper halide perovskite CsCu2I3 thin films and develops self-powered ultraviolet photodetectors with significant sensitivity and high on/off ratio. Under UV illumination, the responsivity and external quantum efficiency reach a high level.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Chemistry, Physical

Unraveling the Phase Transition and Luminescence Tuning of Pb-Free Cs-Cu-I Perovskites Enabled by Reaction Temperature and Polar Solvent

Wenrong Cui et al.

Summary: This study synthesized Pb-free ternary Cs-Cu-I nanocrystals and microrods and found that the emission color and morphology transition can be controlled by manipulating the reaction temperature. It is worth noting that the Cs-Cu-I nanocrystals have self-assembly ability and exhibit rapid phase transition and luminescence tuning. This research is of great significance for understanding the phase transition process in Cu-based perovskites and provides a fluorescence material with fast switching characteristics for anticounterfeiting applications.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2022)

Article Chemistry, Physical

Orientation Regulation of One-Dimensional CsCu2I3 Perovskites for Visible-Blind Ultraviolet Photodetectors

Mingda Li et al.

Summary: This study demonstrates the importance of tuning the crystal orientation for efficient exciton diffusion/charge transport and high-performance lead-free perovskite optoelectronic devices. By using antisolvents during the film formation process, the crystal orientation and exciton/charge transport of 1D CsCu2I3 perovskite films were effectively controlled, resulting in enhanced response speed and detectivity of a self-powered, stable, and visible-blind UV photodetector.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2022)

Article Chemistry, Multidisciplinary

Epitaxial Growth of Lead-Free 2D Cs3Cu2I5 Perovskites for High-Performance UV Photodetectors

Jianan Lv et al.

Summary: The all-inorganic lead-free Cu-based halide perovskites have attracted extensive interest recently due to their impressive photophysical characteristics. In this study, 2D all-inorganic perovskite Cs3Cu2I5 single crystals were successfully grown on mica substrates, and UV photodetectors based on individual Cs3Cu2I5 nanosheets were fabricated, showing high responsivity and fast response speed, outperforming other 2D metal halide perovskite UV sensors. This work sheds light on the fabrication of green optoelectronic devices based on lead-free 2D perovskites, important for the sustainable development of photoelectric technology.
Article Chemistry, Physical

Deep-blue emissive Cs3Cu2I5 perovskites nanocrystals with 96.6% quantum yield via InI3-assisted synthesis for light-emitting device and fluorescent ink applications

Fei Gao et al.

Summary: Lead-free Cs3Cu2I5 nanocrystals with deep-blue emission and high photoluminescence quantum yield are synthesized by adding InI3 precursor. The broad-band blue emission originates from self-trapped excitons formed in Cs3Cu2I5 under light excitation. These nanocrystals exhibit good stability against various environmental factors and can be used in light-emitting devices and fluorescent ink with anti-counterfeiting features.

NANO ENERGY (2022)

Article Chemistry, Multidisciplinary

Carbazole-Containing Polymer-Assisted Trap Passivation and Hole-Injection Promotion for Efficient and Stable CsCu2I3-Based Yellow LEDs

Zhuangzhuang Ma et al.

Summary: Perovskite light-emitting diodes (LEDs) are promising light sources for future lighting and display technologies. However, achieving yellow electroluminescence, environmental stability, and lead toxicity are challenges. By incorporating a hole-transporting polymer into the CsCu2I3 emitter, the electroluminescent performance of the LEDs is improved, resulting in significantly enhanced device performances. The external quantum efficiency of the yellow LEDs is increased by 8.5 times, and the half-lifetime reaches 14.6 hours, making them the most stable yellow LEDs based on perovskite systems reported so far.

ADVANCED SCIENCE (2022)

Article Chemistry, Multidisciplinary

High Color-Rendering Index and Stable White Light-Emitting Diodes by Assembling Two Broadband Emissive Self-Trapped Excitons

Zhuangzhuang Ma et al.

Summary: This study introduces a two-component strategy using two broadband emissive materials with self-trapped excitons (STEs) to produce high CRI and stable WLEDs. By synthesizing copper-based ternary halides composites, the research demonstrates cold/warm tunable WLEDs with high CRI and excellent stability. These results highlight the potential of using hybrids of STEs-derived broadband emissive materials for high-performance WLEDs.

ADVANCED MATERIALS (2021)

Article Multidisciplinary Sciences

Efficient and bright warm-white electroluminescence from lead-free metal halides

Hong Chen et al.

Summary: By introducing an organic additive into the precursor solutions, trap states can be reduced, enhancing the photoluminescence quantum efficiency of metal halide films and increasing the surface potential to facilitate hole injection and transport in LEDs. Therefore, lead-free metal halide LEDs show high brightness and efficiency, making them promising for solution-processed white LED applications.

NATURE COMMUNICATIONS (2021)

Article Nanoscience & Nanotechnology

Bi and Sb Codoped Cs2Ag0.1Na0.9InCl6 Double Perovskite with Excitation-Wavelength-Dependent Dual-Emission for Anti-Counterfeiting Application

Xiang Li et al.

Summary: The Bi/Sb codoped Cs2Ag0.1Na0.9InCl6 double perovskite material emits blue and yellow lights under the 320 and 360 nm UV lamp, respectively. It also exhibits a high PLQY up to 41% and excellent stability against both air and high temperature, making it a promising anti-counterfeiting material.

ACS APPLIED MATERIALS & INTERFACES (2021)

Article Chemistry, Multidisciplinary

Moisture-Induced Reversible Phase Conversion of Cesium Copper Iodine Nanocrystals Enables Advanced Anti-Counterfeiting

Fei Zhang et al.

Summary: Ternary copper halides Cs3Cu2I5 nanocrystals demonstrate excellent hydrochromic properties, allowing dynamic conversion between blue-emissive and yellow-emissive states when exposed to water. When combined with PMMA coating, the material shows long-term stability and can be used for anti-counterfeiting encryption. This innovative design provides new options and insights for the development of hydrochromic materials for anti-counterfeiting purposes.

ADVANCED FUNCTIONAL MATERIALS (2021)

Article Materials Science, Multidisciplinary

High Stability and Strong Luminescence CsPbBr3/Cs4PbBr6 Perovskite Nanocomposite: Large-Scale Synthesis, Reversible Luminescence, and Anti-Counterfeiting Application

Ze Wang et al.

Summary: A CsPbBr3/Cs4PbBr6 nanocomposite with high PLQY and product yield was successfully synthesized using a low-temperature self-assembly strategy, showing good PL performance and stability. The reversible luminescence phenomenon can be achieved through a simple wetting and drying process, making it suitable for anti-counterfeiting applications.

ADVANCED MATERIALS TECHNOLOGIES (2021)

Article Materials Science, Multidisciplinary

Energy Down-Conversion Cs3Cu2Cl5 Nanocrystals for Boosting the Efficiency of UV Photodetector

Chengjun Liu et al.

Summary: This study reports a facile method for synthesizing lead-free Cs3Cu2Cl5 NCs with high PLQY and good stability for optoelectronic devices. Furthermore, the composite films embedded with Cs3Cu2Cl5 NCs were found to greatly enhance the UV response of silicon photodetectors.

FRONTIERS IN MATERIALS (2021)

Review Chemistry, Multidisciplinary

Luminescence anti-counterfeiting: From elementary to advanced

Xiaowei Yu et al.

Summary: Luminescence anti-counterfeiting utilizes the easily changeable luminescence behaviors of materials to prevent forgery of currency, artworks, and product brands. It can be classified into single-level, double-level, and multilevel anti-counterfeiting based on the changes of labels under different conditions. The review summarizes recent achievements in luminescence anti-counterfeiting and discusses the regulation of various factors on anti-counterfeiting labels.

AGGREGATE (2021)

Article Chemistry, Inorganic & Nuclear

An ultraviolet excitation anti-counterfeiting material of Sb3+ doped Cs2ZrCl6 vacancy-ordered double perovskite

Ruxin Liu et al.

Summary: The Sb-doped Cs2ZrCl6 material shows excellent emission variability and potential for various applications, with room temperature synthesis and outstanding stability.

INORGANIC CHEMISTRY FRONTIERS (2021)

Article Chemistry, Multidisciplinary

Optical Nanomaterials and Enabling Technologies for High-Security-Level Anticounterfeiting

Wei Ren et al.

ADVANCED MATERIALS (2020)

Article Materials Science, Multidisciplinary

Efficient All-Solution-Processed Perovskite Light-Emitting Diodes Enabled by Small-Molecule Doped Electron Injection Layers

Jianfeng Zhang et al.

ADVANCED OPTICAL MATERIALS (2020)

Article Multidisciplinary Sciences

Gap-enhanced Raman tags for physically unclonable anticounterfeiting labels

Yuqing Gu et al.

NATURE COMMUNICATIONS (2020)

Article Chemistry, Multidisciplinary

Temporal Multilevel Luminescence Anticounterfeiting through Scattering Media

Meiling Tan et al.

ACS NANO (2020)

Review Chemistry, Multidisciplinary

Structural Color Materials for Optical Anticounterfeiting

Wei Hong et al.

Article Chemistry, Physical

Multiple Self-Trapped Emissions in the Lead-Free Halide Cs3Cu2I5

Haijie Chen et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2020)

Review Nanoscience & Nanotechnology

Lead-Free Halide Perovskites and Perovskite Variants as Phosphors toward Light-Emitting Applications

Jiajun Luo et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

Review Chemistry, Multidisciplinary

White-Light Emission from Layered Halide Perovskites

Matthew D. Smith et al.

ACCOUNTS OF CHEMICAL RESEARCH (2018)

Article Chemistry, Multidisciplinary

Highly Efficient Spectrally Stable Red Perovskite Light-Emitting Diodes

Yu Tian et al.

ADVANCED MATERIALS (2018)

Article Chemistry, Physical

Single-Layer Halide Perovskite Light-Emitting Diodes with Sub-Band Gap Turn-On Voltage and High Brightness

Junqiang Li et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2016)

Article Materials Science, Multidisciplinary

Multidimensional SERS Barcodes on Flexible Patterned Plasmonic Metafilm for Anticounterfeiting Applications

Dongyang Li et al.

ADVANCED OPTICAL MATERIALS (2016)