Article
Chemistry, Inorganic & Nuclear
Zixian Wang, Daofu Wu, Qiang Huang, Linfeng Guo, Yijia Wang, Weiwei Chen, Fei Wang, Juan Du, Zhengzheng Liu, Zhiping Hu, Yuxin Leng, Junan Lai, Peng He, Xiaosheng Tang
Summary: The application of organic-inorganic hybrid lead-free perovskite scintillators in X-ray imaging shows potential as a substitute for traditional lead-containing materials with lower costs and reduced self-absorption.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Lev-Ivan Bulyk, Taras Demkiv, Oleh Antonyak, Yaroslav M. Chornodolskyy, Roman Gamernyk, Andrzej Suchocki, Anatolii Voloshinovskii
Summary: This study investigates the effect of hydrostatic pressure on the luminescence properties of CsPbBr3 single crystals at 12 K. The intensity and energy position of free excitons and Rashba excitons change with increasing pressure.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Handong Jin, Julian A. Steele, Ruolin Cheng, Nagma Parveen, Maarten B. J. Roeffaers, Johan Hofkens, Elke Debroye
Summary: Research on organic-inorganic lead halide perovskites for use in solar cells and electro-optical devices has progressed significantly, but efficiency is still limited by deep traps in the semiconductors. Doping with chloride to passivate defects is believed to be an effective way to reduce trap densities, as evidenced by improved photoluminescence and longer lifetimes. Detailed investigation shows that chloride doping not only enhances PL intensity and lifetime, but also leads to brighter and longer ON-states in single-particle PL studies, providing additional evidence of effective trap passivation.
ADVANCED OPTICAL MATERIALS
(2021)
Review
Materials Science, Multidisciplinary
Min Wang, Zhengwei Yang, Chuang Zhang
Summary: Solution-processable lead halide perovskites exhibit excellent optical and electronic properties, with high quantum efficiency in photoluminescence and polarization characteristics, making them promising for next-generation optoelectronic materials and devices. The introduction of functional units such as chiral ligands can enhance or modulate the polarization in photoluminescence. Incorporating highly ordered microstructures into the materials is an effective way to further enhance the polarization properties at the macroscopic scale.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Optics
Jun Ren, Qin-Qin Wu, Rong-Rong Zhang, Yu-Ming Zhang, Chuan-Guo Shi
Summary: This work demonstrates the importance of carrier recombination sink for lowering the lasing threshold in lead halide perovskites (LHPs) and achieves low-threshold lasing behavior at room temperature through phase segregation induced perovskite heterostructures.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Physical
Shu Hu, Yongtao Huang, Yang Zhang, Pingyuan Yan, Heng Li, ChuanXiang Sheng
Summary: A significantly slow hot-carrier-cooling phenomenon is observed in a multiphase quasi two-dimensional perovskite film, resulting in a blue-shift and multi-peak emission in the photoluminescence spectra. Furthermore, hot-carrier emission from small n materials is observed using a continuous wave laser, leading to an abnormal enhancement of the open-circuit voltage.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Congcong Chen, Luming Zhang, Xiaoqing Ji, Xuanyu Zhang, Yaping Gong, Rui Chen, Lingling Mao
Summary: Hybrid lead halide perovskites have high performance in optoelectronic applications, but are sensitive to moisture. This study shows that better coverage of hydrophobic organic cations enhances water stability, and demonstrates the water stability of new one-dimensional lead bromide compounds.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Niu Sun, Jiawei Lin, Shihui He, Jindong Cao, Zhongnan Guo, Jing Zhao, Quanlin Liu, Wenxia Yuan
Summary: We report a novel 0D In-based OIMH (C10H22N2)2In2Br10 with intrinsic broadband emission (610 nm) and a high photoluminescence quantum yield (PLQY) of 70% without Sb doping.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Pushpender Yadav, Kyeongdeuk Moon, Anupam Biswas, Christopher K. Herrera, Yunlu Zhang, Scott Calabrese Barton, Richard R. Lunt, Gary J. Blanchard, Seokhyoung Kim
Summary: Researchers have successfully synthesized two-dimensional Ruddlesden-Popper halide perovskite BA2PbBr4 nanowires using chemical vapor deposition for the first time. The nanowires exhibit strong absorption and radiative emission characteristics, making them promising candidates for nanophotonic and optical communication applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Sebastian Hurtado Parra, Daniel B. Straus, Bryan T. Fichera, Natasha Iotov, Cherie R. Kagan, James M. Kikkawa
Summary: In this study, evidence for the formation and relaxation of large exciton polarons in 2D organic-inorganic hybrid perovskites was found. It was demonstrated that the structural differences among materials strongly influenced the exciton polaron relaxation process.
Article
Physics, Multidisciplinary
Maryam Sajedi, Maxim Krivenkov, Dmitry Marchenko, Jaime Sanchez-Barriga, Anoop K. Chandran, Andrei Varykhalov, Emile D. L. Rienks, Irene Aguilera, Stefan Bluegel, Oliver Rader
Summary: The formation of large polarons has been proposed as the reason for the unique properties of lead halide perovskites. However, recent research suggests that photoemission data alone cannot determine the formation of large polarons.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Lidia Romani, Andrea Speltini, Francesco Ambrosio, Edoardo Mosconi, Antonella Profumo, Marcello Marelli, Serena Margadonna, Antonella Milella, Francesco Fracassi, Andrea Listorti, Filippo De Angelis, Lorenzo Malavasi
Summary: This study presents a water-stable metal halide perovskite and demonstrates its application in promoting photocatalysis in aqueous medium, leading to impressive hydrogen evolution rate. The composite with g-C3N4 shows synergistic activity and efficient photocatalytic performance in water, paving the way for a new class of light-driven catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Olivera Vukovic, Giulia Folpini, E. Laine Wong, Luca Leoncino, Giancarlo Terraneo, Munirah D. Albaqami, Annamaria Petrozza, Daniele Cortecchia
Summary: This study investigates the size-dependent optoelectronic properties of CsPbI3 nanocrystals through temperature and pressure modulation. It is found that larger particles exhibit increased non-radiative losses and weaker exciton-phonon coupling, leading to decreased luminescence efficiency. Furthermore, a solid-solid phase transition from the gamma-phase to the delta-phase is observed in the nanocrystals, with the optical response strongly dependent on the size of the nanocrystals.
Article
Chemistry, Inorganic & Nuclear
Xiaofan Jiang, Yu Tao, Jiazhen Gu, Leyang Jin, Chen Li, Wenkai Zhang, Yongping Fu
Summary: The stereochemical expression of the 6s(2) lone pair on the lead atom affects the crystal structures and physical properties of lead halide perovskites. We report the synthesis and characterization of a 2D lead bromide hybrid with a rarely observed seven-coordination geometry, highlighting the strong stereo-active lone pair on the Pb2+ cation. Comparisons with other 2D perovskites demonstrate the influence of the lone pair expression on the coordination geometry and optical/electronic properties.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Hui Zhang, Shurong Wang, Huanhuan Yao, Zhiyue Tang, Liming Ding, Feng Hao
Summary: In this study, the phase separation of PEDOT and PSS chains in the film was controlled by ammonium carbamate (AC), resulting in a modified film with lower trap density and more facile carrier transport. As a result, tin halide perovskite solar cells (TPSCs) using the modified PEDOT:PSS film achieved a significantly improved short-circuit photocurrent (J(sc)), open-circuit voltage (V-oc), and power conversion efficiency (PCE).
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Zilan Tang, Shula Chen, Dong Li, Xiaoxia Wang, Anlian Pan
Summary: With the increasing demand for fast processing and large data capacity, traditional silicon-based technology is becoming saturated. New strategies, such as using two-dimensional (2D) materials, are being explored. This review focuses on the integration of 2D materials into silicon-based platforms for photonic applications, summarizing their optical properties and discussing the state-of-the-art devices and future challenges.
JOURNAL OF MATERIOMICS
(2023)
Article
Chemistry, Multidisciplinary
Bo Li, Zhi Tian, Lei Li, Yu-Han Wang, Yuan Si, Hui Wan, Jinghui Shi, Gui-Fang Huang, Wangyu Hu, Anlian Pan, Wei-Qing Huang
Summary: In this study, directional charge transfer channels were constructed using carbon dots/carbon nitride (CCN) nanotubes and FeOOH/FeCo layered double hydroxide (FFC) nanosheets, which significantly improved the photo-assisted overall water splitting performance. Experimental investigations and DFT calculations demonstrated that the interfacial C-O-Fe bonds between CCN and FFC served as charge transfer channels, facilitating the migration of photoexcited carriers between their surfaces. The in situ oxidized Fe/Co species triggered lattice oxygen activation, leading to the construction of the Fe-Co dual-site as the catalytic center and effectively lowering the energy barrier for water oxidation. As a result, the CCN@FFC electrode exhibited multiple functionalities in photoelectrocatalysis, achieving low overpotentials for photo-assisted hydrogen evolution, oxygen evolution, and overall water splitting.
Article
Physics, Applied
Jinpeng Huang, Yi Xu, Binru Zhou, Huming Zhan, Peng Cao, Junxi Wang, Jinmin Li, Xiaoyan Yi, Anlian Pan, Liancheng Wang
Summary: 3D micro-LED displays combine the characteristics of 3D display and the advantages of micro-LEDs, providing users with a 3D experience. LP micro-LEDs with varied chip diameters are investigated and show potential for use in 3D micro-LED displays.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Shijin Hou, Mai He, Cuihuan Ge, Lanyu Huang, Danliang Zhang, Xinyi Luo, Anlian Pan, Xiao Wang
Summary: In this study, the dipole-orientation-dependent energy transfer from zero-dimensional quantum dots to two-dimensional materials was observed by utilizing tightly focused azimuthally and radially polarized cylindrical vector beams. The single-photon emission behavior from the investigated heterostructure was revealed, indicating the construction from single quantum dots. The fast energy transfer rate was observed and interpreted based on dipole-dipole interactions with Forster energy transfer theory.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Multidisciplinary
Zhiyuan Zhou, Xiao Wang
Summary: Negative refraction in multilayered metal-dielectric metamaterials can be achieved not only through negative refractive indices or hyperbolic-like isofrequency surfaces, but also by ellipse-like isofrequency surfaces. The phenomenon is theoretically demonstrated and verified through numerical simulation. The energy flow of ellipse-like modes in the layers is investigated and compared with that of hyperbolic-like modes. Moreover, negative double refraction is achieved by combining ellipse-like and hyperbolic-like isofrequency surfaces.
Article
Chemistry, Multidisciplinary
Long Yuan, Biyuan Zheng, Qiuchen Zhao, Roman Kempt, Thomas Brumme, Agnieszka B. B. Kuc, Chao Ma, Shibin Deng, Anlian Pan, Libai Huang
Summary: In this study, atomically precise lateral heterojunctions based on transitional-metal dichalcogenides (TMDCs) were used to confine one-dimensional (1D) dipolar excitons. The experiment showed that the expansion of the exciton cloud driven by dipolar repulsion was highly anisotropic and density dependent. The interaction strength between the 1D excitons was found to be larger than the interlayer excitons at two-dimensional van der Waals vertical interfaces.
Article
Chemistry, Multidisciplinary
Wei Peng, Ying-Rui Lu, Haiping Lin, Ming Peng, Ting-Shan Chan, Anlian Pan, Yongwen Tan
Summary: A sulfur-stabilizing strategy was used to synthesize ultrafine high-entropy alloy nanoparticles, which exhibited excellent catalytic performance in a specific reaction.
Article
Chemistry, Multidisciplinary
Cuihuan Ge, Danliang Zhang, Feiping Xiao, Haipeng Zhao, Mai He, Lanyu Huang, Shijin Hou, Qingjun Tong, Anlian Pan, Xiao Wang
Summary: Transition metal dichalcogenide heterobilayers exhibit strong moire potentials that can trap interlayer excitons at different locations within one moire unit cell. In this study, high-temperature interlayer excitons trapped at separate moire locales in WS2/WSe2 heterobilayers are observed and modulated. The emission of these excitons can be controlled through engineering the heterointerface with different phonon scattering and the emission energy can be further modulated via strain engineering. These highly tunable interlayer excitons provide valuable insights into moire-exciton physics and have potential applications in high-temperature excitonic devices.
Article
Nanoscience & Nanotechnology
Lihui Li, Zheyuan Xu, Yang Li, Xuehong Zhang, Chi Zhang, Yu Ouyang, Ying Jiang, Xiujuan Zhuang, Anlian Pan
Summary: This study demonstrates the preparation of high-quality WS(2x)Se2((1-x)) monolayers and the improvement of valley polarization degree through sulfur composition tuning. A model is established to describe the valley polarization dynamics and determine the band-edge intervalley scattering lifetime.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Rongrong Xie, Panfeng Cao, Zheyuan Xu, Boyi Xu, Jinyue Fu, Xiaoli Zhu, Xianwei Fu, Sheng-Yi Xie, Ying Jiang, Anlian Pan
Summary: This study reports a significant out-of-plane spin polarization in the two-dimensional Dion-Jacobson (DJ) perovskite, which is the physical origin of the large Rashba spin splitting observed. The generation of this unconventional spin component indicates the significant influence of the in-plane asymmetric crystal field on the spin-orbit interactions. These results suggest that the studied system may serve as a type of spin source material to explore the attractive out-of-plane spin polarization.
Review
Chemistry, Multidisciplinary
Liuli Yang, Jianhua Huang, Yike Tan, Wei Lu, Ziwei Li, Anlian Pan
Summary: Advanced display devices with large color gamut,pure color, high resolution, and small pixels are in high demand. All-inorganic lead halide perovskite (AILHP) nanocrystals have advantages like narrow emission width, saturated color, and flexible integration, and have been used in functional films, light sources, backlight components, and display panels. However, challenges such as working stability, large-scale synthesis, and cost hinder the practical application of AILHP-based advanced display devices. This review focuses on AILHP nanocrystals, discussing recent progress in materials synthesis, stability improvement, patterning techniques, and device application, as well as the role of materials systems and future opportunities.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Yixiong Wang, Chenglin He, Qin Tan, Zilan Tang, Lanyu Huang, Liang Liu, Jiaocheng Yin, Ying Jiang, Xiaoxia Wang, Anlian Pan
Summary: Two-dimensional layered (BA)(2)PbI4 perovskites have great potential in optoelectronic applications. The influence of exciton-phonon interaction on the excitonic emission of (BA)(2)PbI4 microplates is elucidated. The exciton-phonon coupling strength and spectral behavior of surface-emission and interior-emission bands are characterized. The results provide insights into the relationship between exciton-phonon coupling and the length of organic carbon chain ligands.
Article
Optics
Liang Liu, Wangqi Mao, Xinyu Gao, Chenglin He, Zilan Tang, Hao Chang, Long Zhang, Xiaoxia Wang, Hongxing Dong, Anlian Pan
Summary: This study demonstrates a high-capacity physically unclonable function (PUF) label based on vertically aligned perovskite nanowire arrays. The label is constructed using a low-cost solution process and an anodized aluminum oxide template. It achieves high-resolution mapping, impressive encoding capacity, and high pixel density, making it a promising approach for anti-counterfeiting applications.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Xinyi Luo, Mai He, Shijin Hou, Hong Zhou, Kai Braun, Xiaoli Zhu, Anlian Pan, Xiao Wang
Summary: Understanding and manipulating photoluminescence blinking is crucial in nano-photonics and related device applications. In this study, one-dimensional/two-dimensional heterostructures consisting of MoSe2 and CsPbBr3 were constructed. The MoSe2 in the heterostructure exhibited fluorescent blinking behavior, which was negatively correlated with the blinking in CsPbBr3 due to its super-trap states. It was concluded that the bright state of MoSe2 was due to suppressed interfacial charge transfer.
ADVANCED FUNCTIONAL MATERIALS
(2023)
