Article
Chemistry, Physical
Maxim S. Molokeev, Binbin Su, Aleksandr S. Aleksandrovsky, Nicolay N. Golovnev, Mikhail E. Plyaskin, Zhiguo Xia
Summary: The dependence of photoluminescence quantum yield (PLQY) on the crystal structure of existing zero-dimensional ns(2) metal halides is analyzed. The distance between metal ions is found to play a primary role, and the influence of other structural features are quantified. Experimental studies confirm the predictions, and machine learning analysis reveals concentration quenching as the main factor determining PLQY for all s(2) ion metal halides.
CHEMISTRY OF MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Chenkai Deng, Shiqiang Hao, Kunjie Liu, Maxim S. Molokeev, Christopher Wolverton, Liubing Fan, Guojun Zhou, Da Chen, Jing Zhao, Quanlin Liu
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)
Article
Materials Science, Multidisciplinary
Zhikai Qi, Yali Chen, Yao Guo, Xuelian Yang, Fu-Qiang Zhang, Guojun Zhou, Xian-Ming Zhang
Summary: A new 1D organic-inorganic hybrid cadmium chloride material was reported, showing bright white-light emission with high color rendering index and CIE chromaticity coordinates. The white-light emission mechanism was attributed to the synergistic emissions of free excitons and self-trapped excitons in this incredible 1D Cd-based halide.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Inorganic & Nuclear
Jindong Cao, Kunjie Liu, Mingzhen Quan, An Hou, Xingxing Jiang, Zheshuai Lin, Jing Zhao, Quanlin Liu
Summary: Mixing cations with different chemical properties is a new approach for tuning the optical properties of hybrid organic-inorganic metal halides (HOIMHs). In this study, zero-dimensional (C9N3H15)(C9H13SO)MBr6 (M = Bi/Sb) with two different cations were synthesized, resulting in significant second harmonic generation. The synthesized compounds exhibited direct bandgaps and bright yellow emission due to fluorescence emission.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Biyun Ren, Bing Chen, Jianxiong Zhao, Yang Guo, Xin Zhang, Xian Chen, Yangyang Du, Zhiqin Deng, Guangyu Zhu, Feng Wang
Summary: Lanthanide-doped ScF3 nanoparticles were synthesized and studied for their thermal enhancement of upconversion, showing a significant increase in emission within a certain temperature range and high temperature sensitivity. The development of new methods may inspire the creation of thermally enhanced upconversion nanoparticles with high emission intensities.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Tomoyasu Yokoyama, Satoru Ohuchi, Emiko Igaki, Taisuke Matsui, Yukihiro Kaneko, Takao Sasagawa
Summary: This study successfully predicted the crystal structures and phase diagrams of MA-Pb-I systems using first-principles calculations and genetic algorithms. The stable phases were found to be MAPbI(3) and MA(2)PbI(4), consistent with experimental results. The electronic and optical properties of the predicted structures were calculated and solar cell performance was evaluated.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Huizhi Gao, Zhuoya Lu, Xingxing Zhao, Ke Zhang, Xudong Zhu, Rixin Cheng, Shi-Li Li, Zhikai Qi, Xian-Ming Zhang
Summary: This paper reports on a 0D cadmium-based ultra-broadband solid white-light emitter with a large emission bandwidth and high photoluminescence efficiency. The white-light emission is a result of the synergistic work of singlet excitons in organic components and singlet and triplet excitons trapped in distorted tetrahedral substructures.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Azza Ben-Akacha, Chenkun Zhou, Maya Chaaban, Drake Beery, Sujin Lee, Michael Worku, Xinsong Lin, Riona Westphal, Biwu Ma
Summary: Mechanochemical synthesis is an effective method for preparing a wide range of organic, inorganic, and polymeric materials. In this study, we utilized mechanochemical synthesis to produce ionically bonded organic metal halide hybrids with a zero-dimensional structure at the molecular level. The hybrids synthesized through mechanochemical synthesis exhibited dual emission covering a wide spectrum range, showing its potential for diverse applications.
Article
Chemistry, Multidisciplinary
Kunnathodi Vighnesh, Shixun Wang, Haochen Liu, Andrey L. Rogach
Summary: This article provides a comprehensive hot-injection synthesis protocol for CsPbBr3 nanocrystals, outlining various factors that affect its reproducibility and highlighting the steps for fabricating high-quality green-emitting material.
Article
Materials Science, Multidisciplinary
Hayet Jellali, Rawia Msalmi, Hichem Smaoui, Slim Elleuch, Anowar Tozri, Thierry Roisnel, Edoardo Mosconi, Numa A. Althubiti, Houcine Naili
Summary: A one-dimensional ABX(3) hybrid perovskite material was synthesized and characterized. The material exhibited direct band-gap nature and showed cold white-light and blue-light emissions under different doping conditions. Moreover, the doping of specific ions allowed for the modulation of the band-gap energy and optical absorption properties.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Inorganic & Nuclear
Hadiah Fattal, Tielyr D. Creason, Cordell J. Delzer, Aymen Yangui, Jason P. Hayward, Bradley J. Ross, Mao-Hua Du, Daniel T. Glatzhofer, Bayrammurad Saparov
Summary: A new zero-dimensional hybrid organic-inorganic halide, RInBr4, has been investigated for its bright-blue emission and high photoluminescence quantum yield.
The organic component is responsible for the observed blue emission of the hybrid material.
This novel hybrid indium bromide demonstrates significantly improved environmental stability, paving the way for potential applications in light emission.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Wanying Geng, Xufeng Zhou, Aixia Deng, Wei Li, Lei Zhao
Summary: In this study, a vanadium phosphate Ba2BiV2PO11 was selected as a host for Eu3+ to achieve broad excitation and narrow emission red light phosphor. The phosphor exhibited high color purity red light emission under specific excitation, and showed good thermal stability. Furthermore, it improved the white light performance of other phosphors, indicating its potential application in white light-emitting diodes.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Margaret Dawson, Caue Ribeiro, Marcio Raymundo Morelli
Summary: This study proposes cheaper and more stable tin (II) precursors for the synthesis of environmentally friendly substitute CH3NH3SnI3 to replace lead perovskite. The perovskite films synthesized using different precursors have similar structures but different morphologies. When using non-halide precursors, impurities such as sulfur and carbon need to be considered.
Article
Chemistry, Inorganic & Nuclear
Cheng Min, Jin Jian-Ce, Li Jian-Rong, Zhang Zhi-Zhuan, Gong Liao-Kuo, Huang Xiao-Ying
Summary: Two new inorganic-organic hybrid manganese(II) halide crystals, [BMMIm](2)[MnCl4] (1) and [BMMIm](2)[MnBr4] (2), were successfully synthesized with high yield by simple heating/stirring. Single-crystal X-ray diffraction revealed the crystalline structures and photoluminescence studies were conducted to investigate the influence of halogen atom types on the luminescent properties of these compounds.
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yanyan Li, Liting Lin, Jie Yang, Kun Qian, Tao Jiang, Hong Li
Summary: The luminescence of dielectric phase transition materials is an important property for technological applications, and combining dielectric phase transitions and luminescence in organic-inorganic hybrids can lead to new multifunctional materials. The two novel A(2)BX(4) organic-inorganic hybrid complexes reported in this study exhibit intensive red and green luminescence under UV excitation, showing potential applications in multifunctional materials.
Article
Chemistry, Physical
Yingze Zhu, Xuesong Wang, Jianwei Qiao, Maxim S. Molokeev, Hendrik C. Swart, Lixin Ning, Zhiguo Xia
Summary: To promote the development of NIR light sources, the researchers discovered a novel Eu2+-activated broadband NIR-emitting phosphor and investigated its design principles and mechanism using density functional theory calculations. The results showed that with an increase in the Ba/Sr atomic ratio, the emission band of Eu2+ red-shifted and the FWHM enlarged. The application of NIR phosphor-converted LEDs was demonstrated, indicating their potential in night-vision technology.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Binbin Su, Kai Han, Zhiguo Xia
Summary: This study reports the use of Mn2+-doped all-inorganic metal halide as an X-ray imaging scintillator, which exhibits high photoluminescence quantum yield, large Stokes shift, and strong X-ray absorption capability. The scintillation screen fabricated from this material shows good X-ray scintillation performance and stability, making it a promising candidate for high-energy radiation detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Jiance Jin, Kai Han, Yakun Hu, Zhiguo Xia
Summary: Metal halide scintillators with high light yield and sensitive detection are achieved by introducing Zn2+ into [TPPen](2)MnBr4. The introduction of Zn atoms enhances the light yield from 43,000 to 68,000 photons MeV-1 and decreases the detection limit from 696.9 nGy s(-1) to 204.1 nGy s(-1). X-ray imaging is realized using large-scale scintillator films made with TPPMZB or TPPMB, and the spatial resolution is improved from 4.6 to 11.2 lp mm(-1) after Zn2+ doping.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Crystallography
Chang Sung Lim, Aleksandr Aleksandrovsky, Maxim Molokeev, Aleksandr Oreshonkov, Victor Atuchin
Summary: New triple molybdates LixNa1-xCaLa0.5(MoO4)(3):Er(3+)0.05/Yb(3+)0.45 (x = 0, 0.05, 0.1, 0.2, 0.3) were successfully synthesized using microwave-assisted sol-gel-based technique. The crystal structure of the compounds was determined to be scheelite-type. The optimization of upconversion luminescence was found to be controlled by the excitation/energy transfer channel, with maximum luminescence at lithium content x = 0.05.
Article
Crystallography
Nikita O. Azarapin, Nikolay A. Khritokhin, Victor V. Atuchin, Alexey A. Gubin, Maxim S. Molokeev, Shaibal Mukherjee, Oleg V. Andreev
Summary: The oxidation reactions of BaLaCuS3 in the artificial air atmosphere at different heating rates were studied. The oxidation stages were determined using DSC-TG, XRD, and IR-vis methods. The kinetic characteristics of the reactions were analyzed using the Kissinger model. BaLaCuS3 was stable up to 280°C but underwent three main oxidation stages upon further heating up to 1200°C. The final result of the high-temperature treatment was a mixture of barium sulfate, copper (II) oxide, and La2CuO4.
Article
Chemistry, Physical
Lin Nie, Ting Wang, Xue Yu, Wei Gao, Qingpeng Peng, Zhiguo Xia, Jianbei Qiu, Siu Fung Yu, Xuhui Xu
Summary: Direct laser patterning allows precise tailoring of perovskites at the microscale, which is important for advanced optoelectronic devices. However, thermal ablation can lead to imprecise crystallization, limiting the resolution of the technique. This study demonstrates a method of crystallizing perovskite nanoparticles by photon effect, avoiding undesired crystallization and destruction. This technique enables the production of high-transparency, high-resolution, and stable multicolor perovskite PVDF films, potentially applicable in flexible displays.
ACS ENERGY LETTERS
(2023)
Article
Materials Science, Ceramics
Huabo Gao, Maxim S. Molokeev, Qi Chen, Xin Min, Bin Ma
Summary: Eu3+-doped AMoO4 (A = Ca and Ba) phosphors were successfully synthesized and their crystal structures, optical performance, and temperature measurement sensitivities were investigated. The peak doping concentration of CaMoO4:Eu3+ phosphor was 0.18, while the peak doping concentration of BaMoO4:Eu3+ phosphor may be greater than 0.18. The temperature-dependent photoluminescence emission spectra of representative CaMoO4:0.09Eu3+ and BaMoO4:0.03Eu3+ phosphors were recorded. CaMoO4:0.09Eu3+ phosphor exhibited abnormal thermal quenching and good thermal stability.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Yuzhen Wang, Gaochao Liu, Zhiguo Xia
Summary: This study successfully achieved near-infrared (NIR) II emission in a certain calcium gallium silicate crystal by designing and verifying the occupation of Cr4+ ions. The phosphor exhibited broadband NIR-II emission under red light excitation, with good temperature response and relative sensitivity.
LASER & PHOTONICS REVIEWS
(2023)
Article
Crystallography
Evgeniya Moshkina, Evgeniy Eremin, Maxim Molokeev, Dieter Kokh, Alexander Krylov
Summary: Multicomponent flux systems were studied to grow Cu2CrBO5 crystals. The conditions for Cu2CrBO5 crystallization were investigated and the interaction between components was characterized. The crystal structure and chemical composition of the samples were analyzed. The anomalies in the thermal dependence of magnetization and polarized Raman spectra were also studied.
Editorial Material
Chemistry, Multidisciplinary
Kai Han, Zhiguo Xia
ACS CENTRAL SCIENCE
(2023)
Article
Construction & Building Technology
I. G. Endzhievskaya, A. S. Endzhievskiy, M. A. Galkin, M. S. Molokeev
Summary: The study investigates the relationship between various parameters of concrete production process and its properties, such as strength, density, and bending strength, using 48 experimental data points. The results show significant correlations among the compressive strength at different ages, suggesting that predicting only one characteristic is sufficient. Linear regression analysis is not accurate due to the lack of multiple correlations, hence Machine Learning, specifically the Random Forest method, is recommended. The study identifies key parameters for achieving high compressive and bending strengths, including air-entraining additives and specific types of crushed stone fractions.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Chemistry, Inorganic & Nuclear
Navruzbek N. Habibullayev, Nikolay G. Naumov, Alexander N. Lavrov, Natalia V. Kuratieva, Aleksandr S. Aleksandrovsky, Aleksandr S. Oreshonkov, Maxim S. Molokeev, Irina V. Palamarchuk, Ilya O. Yurev, Yuriy G. Denisenko, Oleg V. Andreev, Alena D. Zakharova
Summary: SrLnCuSe(3) compounds belong to the Eu2CuS3 and KCuZrS3 structural type, and crystallize in the Pnma and Cmcm orthorhombic space group. The studied SrLnCuSe(3) samples demonstrate paramagnetic behavior in the temperature range of 1.77-300 K, and Cu1+ ions exhibit a non-magnetic state with accurate Curie constants. The polycrystalline SrLnCuSe3 (Ln = Dy, Ho, Er, Tm) samples are semiconductors with direct bandgaps ranging from 2.14 eV to 2.31 eV.
Article
Chemistry, Multidisciplinary
Evgeniya Moshkina, Yurii Seryotkin, Oleg Bayukov, Maxim Molokeev, Dieter Kokh, Ekaterina Smorodina, Alexander Krylov, Leonard Bezmaternykh
Summary: In this study, the mutual influence between the solvent and soluble in multicomponent fluxes based on Bi2O3-MoO3-B2O3-Na2O was investigated. The crystallization of the triple oxides of the transition metals (Mn,Fe,Ga)(2)O-3, specifically the phases based on orthorhombic FeGaO3 and bixbyite FeMnO3, was studied. Different fluxes were analyzed based on variations in component ratios, and their crucial role at phase boundaries was considered. The stable growth of (Mn,Fe,Ga)(2)O-3 single crystals was determined, and a set of single crystal samples with different ratios was obtained. The composition, structure, and distribution of cations in the samples were characterized using various techniques.
Article
Materials Science, Multidisciplinary
Xinquan Zhou, Shuai Zhang, Kai Han, Jiance Jin, Yongsheng Sun, Zhiguo Xia
Summary: This article presents a platform that utilizes the interactions of self-trapped excitons, dopants, and defects to achieve tunable multimode luminescence and photochromism in metal halide perovskite CsCdCl3. The platform demonstrates improved photoluminescence quantum efficiency and the ability to statically and dynamically manipulate emissions through dopants and changing excitation wavelength/irradiation time. The presence of carrier trapping and de-trapping processes also leads to bright orange-near-infrared persistent luminescence and photochromic behaviors.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Ceramics
Yanan Li, Shujie Gai, Hui Zhu, Jian Yin, Wenyuan Guo, Maxim S. Molokeev, Xiangyang Lu, Mao Xia, Zhi Zhou
Summary: In this study, the strategy of replacing Ge4+ with smaller Si4+ was adopted to selectively occupy the site of Bi3+ activator in the small ring and achieve near-infrared light-emitting in Zn-2(Ge,Si)O-4. The designed phosphor exhibited a broad near-infrared emission range from blue to NIR by controlling the crystal field engineering. This work provides new insights for the development of Bi3+-activated near-infrared emitting phosphors and sheds light on the potential near-infrared luminous mechanism of Bi3+.
CERAMICS INTERNATIONAL
(2023)
