Reversible Triple-Mode Switching in Photoluminescence from 0D Hybrid Antimony Halides

Chemistry of Materials, Год журнала: 2022, Номер 34(15), С. 6985 - 6995

Опубликована: Июль 19, 2022

Hybrid metal halides are an emerging class of highly efficient photoluminescent (PL) materials. However, very few them show reversible on–off PL switching under external stimuli and have the potential to perform as next-generation intelligent materials with applications in cutting-edge photoelectric devices. Herein, we report single crystal-to-single crystal (SC–SC) structural transitions among three 0D hybrid antimony halides, namely, nonemissive α-[DHEP]SbCl5 (1), yellow-emissive β-[DHEP]SbCl5·2H2O (2), red-emissive β-[DHEP]SbCl5 (3), by a dynamic phonon-engineering strategy. The SC–SC transformation between 1 2 is triggered acetone or methanol, affording switching. transition solids achieved 3 through process removal/adsorption guest water molecules. Meanwhile, performed introduction which accompanied quenching red emission. Therefore, triple-mode off–onI–onII–off realized halide hybrids for first time, including off–onI (yellow), color-tunable onI–onII (yellow-red), onII–off (red) modes. More importantly, make suitable successful protection anti-counterfeiting confidential information well optical logic gates.

Язык: Английский

---

(C16H28N)2SbCl5: A new lead-free zero-dimensional metal-halide hybrid with bright orange emission

Science China Materials, Год журнала: 2022, Номер 65(6), С. 1594 - 1600

Опубликована: Янв. 29, 2022

Язык: Английский

---

Recent Advances and Opportunities of Eco‐Friendly Ternary Copper Halides: A New Superstar in Optoelectronic Applications

Advanced Materials, Год журнала: 2023, Номер 35(44)

Опубликована: Фев. 28, 2023

Abstract Recently, the newly‐emerging lead‐free metal‐halide materials with less toxicity and superior optoelectronic properties have received wide attention as safer potentially more robust alternatives to lead‐based perovskite counterparts. Among them, ternary copper halides (TCHs) become a vital group due their unique features, including abundant structural diversity, ease of synthesis, unprecedented properties, high abundance, low cost. Although recent efforts in this field made certain progresses, some scientific technological issues still remain unresolved. Herein, comprehensive up‐to‐date overview progress on fundamental characteristics TCH versatile applications is presented, which contains topics such as: i) crystal electronic structure features synthesis strategies; ii) mechanisms self‐trapped excitons, luminescence regulation, environmental stability; iii) burgeoning devices phosphor‐converted white light‐emitting diodes (WLEDs), electroluminescent LEDs, anti‐counterfeiting, X‐ray scintillators, photodetectors, sensors, memristors. Finally, current challenges together future perspectives development are also critically described, considered be critical for accelerating commercialization these rapidly evolving technologies.

Язык: Английский

---

Achieving Near‐unity Photoluminescence Quantum Yields in Organic‐Inorganic Hybrid Antimony (III) Chlorides with the [SbCl₅] Geometry

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(10)

Опубликована: Янв. 9, 2023

Hybrid organic-inorganic antimony halides have attracted increasing attention due to the non-toxicity, stability, and high photoluminescence quantum yield (PLQY). To shed light on structural factors that contribute PLQY, five pairs of with general formula A2 SbCl5 Sb2 Cl8 are synthesized via two distinct methods characterized. The type adopts square pyramidal [SbCl5 ] geometry near-unity while seesaw dimmer [Sb2 PLQY≈0 %. Through combined data analysis literature, we found series generally has much longer Sb⋅⋅⋅Sb distances, leading more expressed lone SbIII . Additional including Sb-Cl distance stability chlorides may also affect PLQY. Our targeted synthesis correlated insights provide efficient tools precisely form highly emissive materials for optoelectronic applications.

Язык: Английский

---

Moisture-Induced reversible structure conversion of Zero-Dimensional organic cuprous bromide hybrids for multiple photoluminescent anti-Counterfeiting, information encryption and rewritable luminescent paper

Chemical Engineering Journal, Год журнала: 2023, Номер 458, С. 141436 - 141436

Опубликована: Янв. 13, 2023

Язык: Английский

---

Temperature-Dependent Reversible Optical Properties of Mn-Based Organic–Inorganic Hybrid (C₈H₂₀N)₂MnCl₄ Metal Halides

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(4), С. 5487 - 5494

Опубликована: Янв. 18, 2023

Organic-inorganic metal halides (OIMHs) have abundant optical properties and potential applications, such as light-emitting diodes, displays, solar cells, photodetectors. Herein, we report zero-dimensional Mn-based OIMH (C8H20N)2MnCl4 single crystals synthesized by a simple slow evaporation method, which exhibit intense green emission at 520 nm originating from 4T1-6A1 transition of Mn2+ ions. Large organic cations in the crystal structure result isolated [MnCl4]2- tetrahedrons, closest Mn-Mn distance reaches 9.07 Å, effectively inhibits migration excitation energy between adjacent centers, thus achieving high quantum yield (∼87%) long photoluminescence (PL) lifetime (3.42 ms). The different structural low temperatures are revealed temperature-dependent PL X-ray diffraction spectra. spectra lifetimes under heating cooling processes indicate that property transitions reversible 220/240 K. Our work provides promising strategy for building multifunctional optoelectronic materials insights into understanding convertible photophysical isomers halides.

Язык: Английский

---

Achieving Near‐Unity Red Light Photoluminescence in Antimony Halide Crystals via Polyhedron Regulation

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(24)

Опубликована: Апрель 15, 2024

Exploration of efficient red emitting antimony hybrid halide with large Stokes shift and zero self-absorption is highly desirable due to its enormous potential for applications in solid light emitting, active optical waveguides. However, it still challenging rarely reported. Herein, a series (TMS)

Язык: Английский

---

Self-Trapped Exciton Emission in Highly Polar 0D Hybrid Ammonium/Hydronium-Based Perovskites Triggered by Antimony Doping

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(22), С. 15198 - 15208

Опубликована: Май 14, 2024

Various monovalent cations are employed to construct metal halide perovskites with various structures and functionalities. However, based on highly polar A-site have seldom been reported. Here, a novel hybrid 0D (NH4)x(OH3)3–xInCl6 perovskite hydronium OH3+ is introduced in this study. Upon doping Sb3+, single crystals exhibited efficient broadband yellowish-green (550 nm) red (630 dual emissions PLQY of 86%. The emission arises due Sb3+ occupying two sites within the crystal lattice that possess different polarization environments, leading distinct Stokes shift energies. study revealed polarity plays significant role self-trapped exciton Sb3+-doped perovskites, contributing up 25% energy for (NH4)x(OH3)3–xInCl6:Sb3+ as secondary source, addition Jahn–Teller deformation. These findings highlight potential achieving tunable underscore importance determining properties materials.

Язык: Английский

---

Near‐infrared emitting metal halide materials: Luminescence design and applications

InfoMat, Год журнала: 2024, Номер 6(5)

Опубликована: Март 28, 2024

Abstract Near‐infrared (NIR) luminescent metal halide (LMH) materials have attracted great attention in various optoelectronic applications due to their low‐temperature solution‐processable synthesis, abundant crystallographic/electronic structures, and unique properties. However, some challenges still remain luminescence design, performance improvement, application assignments. This review systematically summarizes the development of NIR LMHs through classifying origins into four major categories: band‐edge emission, self‐trapped exciton (STE) ion defect‐related emission. The mechanisms different types are discussed detail by analyzing typical examples. Reasonable strategies for designing optimizing luminescence/optoelectronic properties summarized, including bandgap engineering, self‐trapping state chemical composition modification, energy transfer, other auxiliary such as improvement synthesis scheme post‐processing. Furthermore, prospects based on devices revealed, phosphor‐converted light‐emitting diodes (LEDs), electroluminescent LEDs, photodetectors, solar cells, x‐ray scintillators, well demonstrations related practical applications. Finally, existing future perspectives LMH critically proposed. aims provide general understanding guidance design high‐performance materials. image

Язык: Английский

---

Component Engineering to Tailor the Structure and Optical Properties of Sb-Doped Indium-Based Halides

Inorganic Chemistry, Год журнала: 2022, Номер 61(3), С. 1486 - 1494

Опубликована: Янв. 4, 2022

Controlling the structure of halide perovskites through component engineering, and thus revealing changes in luminescence properties caused by conversion crystal structure, is great significance. Herein, we report a controllable synthetic strategy three-dimensional (3D) Cs2KInCl6 zero-dimensional (0D) (Cs/K)2InCl5(H2O) changing Cs/K feed ratio. 3D double are obtained at ratio 1:1, while 0D formed 2:1. Further, reversible transformation between can be achieved subsequent addition metal-salt precursors. In addition, emission efficiency two perovskite structures greatly boosted breaking forbidden transition Sb doping, as result, novel green/yellow switch generated. Meanwhile, relationship mechanism has been systematically revealed. These environmentally stable have potential to applied optoelectronic devices.

Язык: Английский

---