A 0D hybrid lead-free halide with near-unity photoluminescence quantum yield toward multifunctional optoelectronic applications

Abstract

0D hybrid indium halide exhibits near-unity PLQY and negligible self-absorption realizing multiple cutting-edge optoelectronic applications in high-performance white LED, X-ray scintillation and reversible fluorescent probe toward tribromomethane.

Highly Luminescent Phase-Stable Hybrid Manganese Halides for Efficient X-ray Imaging

“…11−13 Many of these materials have been extensively studied as X-ray scintillators, demonstrating their remarkable characteristics such as a high light yield and a low detection limit when exposed to X-ray excitation. 12,14 Among various types of Pb-free scintillators, particular focus is given to Mn 2+ complexes because of their higher tolerance to oxidation than that of Cu + -, Sn 2+ -, and Eu 2+ -based compounds. More importantly, the emission wavelength of Mn 2+ complexes, primarily originating from its d−d transition, can be easily tuned over a wide visible range by adjusting the coordination environment of Mn 2+ , which is beneficial for achieving a better match with the spectral sensitivity of the coupled photodetector, thereby avoiding any postscintillation losses.…”

“…In light of the intriguing optical properties of Pb-based halide perovskites, a variety of different Pb-free alternatives, such as Cs 2 NaTbCl 6 , Cs 3 Bi 2 I 9 , (C 8 H 17 NH 3 ) 2 SnBr 4 , Cs 4 EuX 6 (X = Br and I), (Im-BDMPA)­InCl 6 ·H 2 O [Im-BDMPA = 3,3′-iminobis­( N , N -dimethylpropylamine)], and 2-(2-pyridyl)­benzimidazole–ZnCl 2 , and some “perovskite-inspired” metal halides, including Rb 2 CuCl 3 , Cs 3 Cu 2 I 5 , and (C 8 H 20 N) 2 Cu 2 Br 4 , have been proposed. − Many of these materials have been extensively studied as X-ray scintillators, demonstrating their remarkable characteristics such as a high light yield and a low detection limit when exposed to X-ray excitation. , Among various types of Pb-free scintillators, particular focus is given to Mn 2+ complexes because of their higher tolerance to oxidation than that of Cu + -, Sn 2+ -, and Eu 2+ -based compounds. More importantly, the emission wavelength of Mn 2+ complexes, primarily originating from its d–d transition, can be easily tuned over a wide visible range by adjusting the coordination environment of Mn 2+ , which is beneficial for achieving a better match with the spectral sensitivity of the coupled photodetector, thereby avoiding any postscintillation losses. − Recently, great improvement in the scintillation performance of halide perovskites and II–VI semiconductors has been achieved when using Mn 2+ ions as dopants, which also contributes to improved lattice stability for the host material. − There are also several works investigating the X-ray luminescence of Mn 2+ -based organic–inorganic hybrid halides, such as (TTPhP) 2 MnCl 4 :Sb, (C 8 H 20 N) 2 MnBr 4 , and TEA 2 MnI 4 , which exhibited an impressively high light yield of 20,000–80,000 photons/MeV and an ultralow detection limit of 20–400 nGy/s at room temperature. − Moreover, compared to their all-inorganic counterparts (e.g., CsMnCl 3 and Cs 3 MnI 5 ), , hybrid compounds exhibit enhanced air stability and offer a wide range of organic cations, allowing for greater flexibility in fine-tuning their chemical, physical, mechanical, and dielectric properties.…”

Enhanced gas sensing performance of sprayed ZnO–ZnWO4 toward CO gas

“…Many researchers have tried to fabricate different kinds of gas sensors in order to detect harmful gases effectively. 3–12 Metal oxide-based sensors have gathered significant attention among gas sensors due to their effective sensing characteristics. 13…”

Crystal-Rigidifying Strategy in Hybrid Manganese Halide to Achieve Narrow Green Emission and High Structural Stability

“…20 For instance, In 3+ -, Sb 3+ -, Zn 2+ emit broadband yellow or blue light emissions and it is difficult to generate narrow green light emission. 21 Comparing with these LDMHs, Mn 2+ -based halides possess distinctive advantages because the tetrahedral [MnX 4 ] 2− unit gives the nearly fixed green light emission. Manganese is the 12th most abundant element with a concentration of approximately 0.1% in Earth's crust as inexpensive raw materials.…”