Article
Chemistry, Multidisciplinary
Maria C. Folgueras, Sheena Louisia, Jianbo Jin, Mengyu Gao, Alexandra Du, Sirine C. Fakra, Rui Zhang, Fabian Seeler, Kerstin Schierle-Arndt, Peidong Yang
Summary: A stable, ligand-free perovskite semiconductor ink has been developed for one-step fabrication of semiconductor-based optoelectronic devices. This ink can reversibly transform between liquid and solid-state perovskite structures in minutes in air, and can be patterned onto various materials through different methods such as dropcasting, spraying, painting, and stamping.
Article
Materials Science, Multidisciplinary
Xiangqian Lu, Renjie Hu, Yabin Zhu, Kepeng Song, Wei Qin
Summary: In this study, a transition metal-implanted perovskite with multiferroic magnetoelectric coupling was successfully prepared. The introduction of transition metal generated polarized spin interacts with the electronic orbit through spin-orbital coupling to lead to a pronounced octahedron distortion and a ferroelectric polarization transition. Both external magnetic field and electric field affect the strength and direction of spin polarization and electric polarization. Spin polarization-induced electric polarization provides a unique approach to realizing room temperature magnetoelectric coupling in perovskite materials.
NPG ASIA 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
Multidisciplinary Sciences
Peisheng Cao, Haoyue Zheng, Peng Wu
Summary: By investigating the BX6 octahedral structure, luminescence phenomena, including excitation-dependent color-tunable phosphorescence, have been discovered in a range of inorganic materials. These findings are significant for the understanding and further development of luminescent inorganic materials.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Qifan Feng, Xiaofeng Huang, Ziheng Tang, Yaolin Hou, Qing Chang, Siqing Nie, Fang Cao, Xiaoying Niu, Jun Yin, Jing Li, Nanfeng Zheng, Binghui Wu
Summary: This study proposes a strategy using PbI6 octahedra-governing with functional synergism of cations and anions to protect unstable PbI6 octahedral frameworks in perovskite-photovoltaic applications. The strategy effectively passivates defects and stabilizes the octahedral structure, leading to high power conversion efficiency and stable continuous output in the modified modules. The anchoring-polymerization protection strategy also shows potential for building stable and practical perovskite photovoltaics.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Zhikai Qi, Huizhi Gao, Xuelian Yang, Yali Chen, Fu-Qiang Zhang, Mei Qu, Shi-Li Li, Xian-Ming Zhang
Summary: This study presents a new one-dimensional lead iodide hybrid with face-sharing PbI6 octahedral chains, showing broadband yellow emissions due to self-trapped excitons associated with distorted Pb-I lattices. The material is identified as an indirect bandgap semiconductor, with band structures mainly governed by the inorganic components. This work represents the first instance of a broadband emitter based on a one-dimensional face-shared lead iodide hybrid, offering a new approach to novel broadband emission materials.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Milica Vasiljevic, Marton Kollar, David Spirito, Lukas Riemer, Laszlo Forro, Endre Horvath, Semen Gorfman, Dragan Damjanovic
Summary: Organometallic lead halide perovskites exhibit a surprisingly high piezoelectric-like response due to the interplay of ionic motion and photoelectrons. This research reveals the significant impact of ionic activity on material properties and offers a method to control the piezoelectric effect.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Masaud Almalki, Algirdas Ducinskas, Loi C. Carbone, Lukas Pfeifer, Laura Piveteau, Weifan Luo, Ethan Lim, Patricia A. Gaina, Pascal A. Schouwink, Shaik M. Zakeeruddin, Jovana Milic, Michael Gratzel
Summary: Layered hybrid perovskites with organic spacers between perovskite slabs were synthesized using arene and perfluoroarene moieties. The resulting materials showed the formation of layered perovskite phases and exhibited nanoscale segregation and enhanced stability in humid environments.
Article
Chemistry, Multidisciplinary
Liping Peng, Yulin Xie, Changquan Yang
Summary: This study investigated the photoelectric properties of different metal atoms adsorbed on a 2D perovskite surface, finding that Bi atom adsorption results in the most stable structure, improves charge carrier transfer, and enhances the photoelectric properties significantly compared to Ag and Au adsorption. Additionally, the impact of Bi atom adsorption on 2D perovskite is stronger than that of Ag or Au, as confirmed by light absorption spectrum analysis.
Article
Chemistry, Multidisciplinary
Guo-Jun Yuan, Hong Zhou, Li Li, Hong Chen, Xiao-Ming Ren
Summary: Crystal engineering aims to understand the correlation between components and crystal structures for acquiring desired crystal structures and functionalities. In this study, a novel lead bromide perovskite crystal was obtained and characterized through various techniques. The crystal underwent a reversible phase transition during heating/cooling, mainly driven by PbBr6 coordination sphere distortion and changes in Na-Br bonds.
Article
Chemistry, Inorganic & Nuclear
Harry C. Sansom, Leonardo R. Buizza, Marco Zanella, James T. Gibbon, Michael J. Pitcher, Matthew S. Dyer, Troy D. Manning, Vinod R. Dhanak, Laura M. Herz, Henry J. Snaith, John B. Claridge, Matthew J. Rosseinsky
Summary: A newly reported compound, CuAgBiI5, with a 3D octahedral network structure, shows low sensitivity to changes in the dimensionality of the octahedral network compared to Cu2AgBiI6. The composition-structure-property relationships of these compounds reveal interesting insights into controlling structural dimensionality.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
F. Cordero, F. Trequattrini, F. Craciun, A. M. Paoletti, G. Pennesi, G. Zanotti
Summary: Metal-organic halide perovskites have excellent photovoltaic properties, but efforts are needed to improve their stability by studying structural transformations and dynamics of organic cations.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Junsang Cho, Preethi S. Mathew, Jeffrey T. DuBose, Prashant Kamat
Summary: 2D lead halide perovskites with tunable bandgap and enhanced chemical stability are useful for designing optoelectronic devices. Reducing dimensionality can increase resistance to light-induced ion migration, but also decreases the efficiency of halide ion segregation and segregation rate constant, leading to a decrease in charge-carrier lifetime.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Rachel Elizabeth Brophy, Movaffaq Kateb, Kristinn Torfason, George Alexandru Nemnes, Halldor Gudfinnur Svavarsson, Ioana Pintilie, Andrei Manolescu
Summary: This study reveals that the diffusion of iodide defects is the most important degradation mechanism in methylammonium lead iodide (MAPI) solar cells, and highlights the influence of internal pressure on the dynamics of these defects. Results show that the diffusion coefficient of an iodide vacancy is one order of magnitude higher than that of interstitial iodide, and this difference increases with increased tensile strain. The diffusion coefficients tend to zero under compressive strain, suggesting that compression of MAPI can effectively reduce its degradation rate. Furthermore, the statistical aspect of deriving the diffusion coefficient using mean squared displacement (MSD) is discussed in terms of initial conditions and simulation time.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Editorial Material
Chemistry, Physical
Shuzhang Yang, Yu Liu, Xinxin Lian, Junhao Chu
Summary: By doping a small amount of rubidium chloride into perovskite precursor solution, scientists successfully converted the harmful PbI2 phase into an inactive phase, removing impurities in perovskite films and improving the power conversion efficiency and operational stability of solar cells.
Article
Chemistry, Physical
Jianbo Jin, Li Na Quan, Mengyu Gao, Chubai Chen, Peijun Guo, Peidong Yang
Summary: In this study, the temperature-dependent single-crystal X-ray diffraction measurements were used to identify two types of distortions in Cs3Bi2Br9 2D halide perovskites: intraoctahedral distortion and interoctahedral distortion. The distortions of the octahedra were found to be related to the changes in the optoelectronic properties of Cs3Bi2Br9. The study provides insights into the excitonic behaviors of perovskites and suggests the possibility of designing the optical properties of halide perovskites based on the behaviors of the individual building blocks.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Peng-Cheng Chen, Chubai Chen, Yao Yang, Arifin Luthfi Maulana, Jianbo Jin, Julian Feijoo, Peidong Yang
Summary: Silver-copper (AgCu) bimetallic catalysts exhibit high mobility of Cu in CO2RR conditions, leading to leaching, detachment, and agglomeration as new particles. The phase separation of Ag and Cu into Cu-rich and Ag-rich grains occurs during the reaction, approaching thermodynamic values. The role of AgCu phase boundaries is highlighted, and the metallic state of Cu in AgCu is confirmed as the catalytically active sites during CO2RR. This work provides a comprehensive understanding of the chemical and structural evolution behavior of AgCu catalysts in CO2RR.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Mengyu Gao, Yoonjae Park, Jianbo Jin, Peng-Cheng Chen, Hannah Devyldere, Yao Yang, Chengyu Song, Zhenni Lin, Qiuchen Zhao, Martin Siron, Mary C. Scott, David T. Limmer, Peidong Yang
Summary: Halide perovskite is a unique dynamical system with complex structural and chemical processes, but its intrinsic instability makes real-time investigation challenging. However, our research reveals that atomically thin carbon materials can stabilize ultrathin halide perovskite nanostructures and enable atomic-level visualization of their movement. Protected by carbon shells, these structures maintain their integrity under high electron dose rate and exhibit unusual dynamical behaviors. Our work provides a new method to protect beam-sensitive materials and study structure dynamics of nanomaterials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Yao Yang, Sheena Louisia, Sunmoon Yu, Jianbo Jin, Inwhan Roh, Chubai Chen, Maria V. Fonseca Guzman, Julian Feijoo, Peng-Cheng Chen, Hongsen Wang, Christopher J. Pollock, Xin Huang, Yu-Tsun Shao, Cheng Wang, David A. Muller, Hector D. Abruna, Peidong Yang
Summary: This study presents a comprehensive investigation of the structural dynamics of Cu nanocatalysts during the electrochemical synthesis of fuels and chemicals. The presence of active Cu nanograins under CO2 reduction conditions and their role in supporting C-C coupling reactions were observed. Quantitative structure-activity correlation revealed that a higher fraction of Cu nanograins leads to higher selectivity for C2+ products. This research provides a powerful platform for advancing our understanding of the complex structural evolution of nanocatalysts under electrochemical conditions.
Article
Chemistry, Multidisciplinary
Yao Yang, Yu-Tsun Shao, Jianbo Jin, Julian Feijoo, Inwhan Roh, Sheena Louisia, Sunmoon Yu, Maria V. Fonseca Guzman, Chubai Chen, David A. Muller, Hector D. Abruna, Peidong Yang
Summary: The design and synthesis of nanocatalysts with well-defined sizes, compositions, and structures have greatly enhanced our ability to control catalyst activity and selectivity for energy-related electrochemical reactions. By using operando electrochemical liquid-cell scanning transmission electron microscopy (EC-STEM), the dynamic evolution of Cu nanocatalysts during CO2 electroreduction was observed, providing valuable insights into their active states. With further technical advancements, operando EC-STEM is expected to become a powerful electroanalytical method for studying nanoscale electrocatalysts at solid/liquid interfaces.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Jianbo Jin, Haowei Huang, Chubai Chen, Patrick W. Smith, Maria C. Folgueras, Sunmoon Yu, Ye Zhang, Peng-Cheng Chen, Fabian Seeler, Bernd Schaefer, Carlos Lizandara-Pueyo, Rui Zhang, Kerstin Schierle-Arndt, Peidong Yang
Summary: Cs2Te(IV)X6 double perovskites exhibit molecule-like electronic behavior when X is Cl- or Br-, thanks to the zero-dimensional (0D) nature of their octahedral units. The Cs2TeBr6 solid is composed of electronically isolated [TeBr6]2- ionic octahedra. The electronic structure and photoexcitation of Cs2TeBr6 are discussed, and two optical absorption features corresponding to HOMO-LUMO transitions under 455 nm and 365 nm excitations are identified. The photocatalytic performance of Cs2TeBr6 in the photo-oxidation of benzyl alcohol is studied, revealing differences in the activated alcohol radicals depending on the excitation wavelength. This work highlights the application potential of molecule-like halide perovskites in photocatalysis.
Article
Chemistry, Multidisciplinary
Yixuan Dou, Marie Solange Tumusange, Jianbo Jin, Xiaoming Wang, Erin R. Crater, Suhao Liu, Liyan Zhu, Samir Zuberi, Gavin Harman, Conner Weaver, Balaji Ramanujam, Ambalanath Shan, Robert B. Moore, Nikolas J. Podraza, Yanfa Yan, Lina Quan
Summary: This paper reports the discovery of a broadband (540-1060nm) achromatic quarter waveplate (A-QWP) based on a two-dimensional (2D) layered hybrid copper halide (HCH) perovskite single crystal. The A-QWP can modulate light polarization and retardation across a broad range of wavelengths. The design of the A-QWP utilizes the in-plane optical birefringence triggered by Jahn-Teller distortion in the 2D copper chloride (CuCl6) layers of the HCH crystal.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Maria C. Folgueras, Yuxin Jiang, Jianbo Jin, Peidong Yang
Summary: Traditional synthesis of high-entropy materials requires high temperatures and complex processing techniques. However, we have developed room temperature and low temperature synthesis procedures for high-entropy semiconductor single crystals by self-assembling stabilized complexes in multi-element inks.
Article
Chemistry, Physical
Jianbo Jin, Li Na Quan, Mengyu Gao, Chubai Chen, Peijun Guo, Peidong Yang
Summary: In this study, two types of distortions, intraoctahedral distortion and interoctahedral distortion, were identified in Cs3Bi2Br9 2D halide perovskites through temperature-dependent single-crystal X ray diffraction measurements. The relationship between the distortion of octahedra and the changes in optoelectronic properties of Cs3Bi2Br9 were investigated using the free exciton and self-trapped exciton models. This work provides new insights into the excitonic behaviors of perovskites and suggests the possibility of designing the optical properties of halide perovskites based on the behaviors of individual building blocks.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
