Article
Physics, Applied
Jing Liu, Minhuan Wang, Wanxian Cai, Rui Cai, Yantao Shi, Jiming Bian
Summary: There are two methods for preparing perovskite solar cells (PSCs): one-step and two-step processes. Both methods can achieve high-performance PSCs, but the photovoltaic parameters vary. By analyzing factors such as crystalline growth mode, optical properties, defect types, and carrier transport mechanisms, the key factors for producing high-performance PSCs can be identified.
APPLIED PHYSICS LETTERS
(2022)
Review
Materials Science, Multidisciplinary
Hongda Li, Tianyuan Luo, Shoufeng Zhang, Zijun Sun, Xiong He, Wenfeng Zhang, Haixin Chang
Summary: Metal-halide perovskites have attracted increasing attention in optoelectronics, with 2D metal-halide perovskites showing novel properties that can enhance the performance of optoelectronic devices.
ENERGY & ENVIRONMENTAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Tianrui Li, Tao Zhu, Xiyao Zhang, Haorui Tang, Kai Zhang, Xing Zhu, Shaoyuan Li, Wenhui Ma, Jie Yu
Summary: An n-type organic molecule is introduced to enhance the efficiency and stability of perovskite solar cells. The organic molecule forms hydrogen bonds with perovskites, suppressing ion migration and passivating traps in the perovskite layer. The treated perovskite films demonstrate high power conversion efficiency, fill factor, and long-term stability.
Article
Chemistry, Physical
Haizhen Wang, Jiaqi Ma, Dehui Li
Summary: Two-dimensional (2D) hybrid perovskites have attracted attention in optoelectronic fields due to their unique properties, which can be further enhanced through integration with other layered materials, leading to high-performance optoelectronic devices. This Perspective introduces the properties of 2D perovskites, discusses various heterostructures, and proposes future research directions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Tian-Meng Guo, Fei-Fei Gao, Yong-Ji Gong, Zhi-Gang Li, Fengxia Wei, Wei Li, Xian-He Bu
Summary: This study reports the synthesis of a pair of chiral two-dimensional piezoelectric organic-inorganic perovskites (HOIPs) and their application in underwater ultrasound detection. The results show that the materials have low mechanical strength but significant piezoelectric strain coefficients, allowing for efficient ultrasound transmission underwater. These findings open up new possibilities for the use of piezoelectric HOIPs in underwater ultrasound detection and imaging technologies.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Mei Li, Shang Peng, Shiyu Fang, Yu Gong, Dongliang Yang, Kejun Bu, Bingyan Liu, Hui Luo, Songhao Guo, Junlong Li, Hao Wang, Yufeng Liu, Sheng Jiang, Chuanlong Lin, Xujie Lu
Summary: Perovskite-related materials have attracted sustained attention due to their extraordinary electronic and optoelectronic properties. However, the synthesis of compounds with desired compositions and structures remains challenging. In this study, a two-dimensional CsPb2I5 perovskite was successfully synthesized by converting CsPbI3 under high-pressure and high-temperature conditions. The conversion of CsPbX3 (X = Br and I) into CsPb2X5 was found to be ubiquitous, indicating a similar structural evolution in various perovskite materials.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Yuanyuan Fang, Jingtian Wang, Long Zhang, Guangming Niu, Laizhi Sui, Guorong Wu, Kaijun Yuan, Kai Wang, Bo Zou
Summary: Efficient warm white light emission is sought after in single-component materials for light-emitting applications. This study observed an unusual pressure-induced warm white emission enhancement in 2D perovskite (2meptH(2))PbCl4, accompanied by a significant increase in photoluminescence quantum yield. The collapse of the crystal structure triggered by octahedral distortions and the evolution of organic cations led to the emission enhancement, and further collapse promoted the formation of self-trapped excitons and suppressed nonradiative transitions, resulting in continuous photoluminescence enhancement under pressure.
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, Physical
Chaochao Qin, Liuhong Xu, Zhongpo Zhou, Jian Song, Shuhong Ma, Zhaoyong Jiao, Yuhai Jiang
Summary: Quasi-two-dimensional perovskites have unique excitonic properties and are promising materials for optoelectronic applications. However, the influence of organic spacer cations on the structural distortions and charge screening between perovskite layers is still not well understood. This study presents the carrier transport characteristics of Dion-Jacobson and Ruddlesden-Popper type perovskite layers. The results provide valuable insights for further tuning the optoelectronic properties of layered perovskite devices.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
Yiwei Zhang, Fengjing Liu, Chao Jiang, Fawei Tang, Xinping Zhang
Summary: A HOIP single crystal with one-dimensional structure was successfully designed and synthesized in this study, showing suppressed ion migration and ultra-low trap states density. The photodetector based on this 1D single crystal exhibited excellent performance with negligible hysteresis, high responsivity and EQE. Additionally, the device showed good stability after 3 months of ambient storage.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Review
Chemistry, Multidisciplinary
Weiguang Chi, Sanjay K. Banerjee
Summary: This article summarizes the crystal structure and characteristics of different 2D perovskite materials and their performance in PSCs. Furthermore, it systematically analyzes the contributions of 2D perovskites to the improvement of device stability and efficiency from various engineering perspectives.
TRENDS IN CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Chongyang Zhi, Zhen Li, Bingqin Wei
Summary: Researchers have explored a strategy of modifying the structure of lead halide perovskite solar cells with hydrophobic organic cations to improve both efficiency and stability. This approach involves multidimensional tuning of the bulk and interfaces of perovskite materials, defect passivation, and interface functionalization. Ultimately, stability improvement through 2D modifications has been proven effective.
Article
Multidisciplinary Sciences
Xing Guo, Jie Su, Zhenhua Lin, Xinhao Wang, Qingrui Wang, Zebing Zeng, Jingjing Chang, Yue Hao
Summary: The use of a novel extended benzopenta-fulvalenes compound FDC-2-5Cl for treating the surface of perovskite has led to high power conversion efficiency and long-term stability in solar cells.
Article
Chemistry, Physical
Carlos Mora Perez, Dibyajyoti Ghosh, Oleg Prezhdo, Wanyi Nie, Sergei Tretiak, Amanda Neukirch
Summary: This study investigates the impact of defects on the ground state electronic structure of two-dimensional RP halide perovskites. The research reveals that neutral-type point defects have limited influence on the electronic structure, while donor/acceptor defects introduce deep midgap states that can harm the material's electronic performance. Avoiding halide vacancies and interstitial defects is crucial to maintain positive intrinsic properties and improve device performance in 2D halide perovskite-based applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Ziyi Wang, Xu Chen, Yipeng Song, Zhipeng Du, Yang Zhou, Minjuan Li, Weiqi Huang, Qianting Xu, Yanqiang Li, Sangen Zhao, Junhua Luo
Summary: This work reports the observation of heat switching birefringence in a 2D layered hybrid halide perovskite crystal. Structure analyses reveal the impact of heat-induced structure transition on birefringence. This discovery may contribute to the development of stimuli-responsive polarization optical devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Malia B. Wenny, Nicola Molinari, Adam H. Slavney, Surendra Thapa, Byeongdu Lee, Boris Kozinsky, Jarad A. Mason
Summary: Understanding the factors that govern gas absorption in ionic liquids is crucial for developing high-capacity solvents. Experimental probes and molecular dynamics simulations reveal the relationship between liquid structure and gas absorption properties, providing guidance for designing ionic liquids with high gas solubilities.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Chemistry, Multidisciplinary
Jinyoung Seo, Jason D. Braun, Vidhya M. Dev, Jarad A. Mason
Summary: Barocaloric effects, induced by applied hydrostatic pressure, offer promise for solid-state refrigerants. The pressure-induced spin-crossover transitions in a molecular iron(II) complex have been found to drive giant and reversible barocaloric effects, providing new insights for the design of barocaloric materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Adam H. Slavney, Hong Ki Kim, Songsheng Tao, Mengtan Liu, Jarad A. Mason, Simon J. L. Billinge
Summary: Glassy phases of framework materials offer unique and tunable properties for various applications. A new guanidinium organosulfonate hydrogen-bonded organic framework (HOF) has been discovered, which demonstrates melting and vitrification below 100 degrees C. Non-covalent interactions between guest molecules and the porous framework play a crucial role in the overall stability of the structure, leading to guest-dependent transitions. Through simulations and X-ray scattering, it is found that the local structures of the amorphous liquid and glass phases resemble those of the parent crystalline framework.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Nathan R. Wolf, Adam Jaffe, Adam H. Slavney, Wendy L. Mao, Linn Leppert, Hemamala I. Karunadasa
Summary: This study investigates the effects of pressure on defects in halide perovskites. The results show that pressure can modify the conductivity and bandgap of the material, and there is complex optoelectronic behavior that cannot be explained solely by the evolving bandgap.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Mercie N. Hodges, Matthew J. Elardo, Jinyoung Seo, Alexander F. Dohoda, Forrest E. Michael, Matthew R. Golder
Summary: The accumulation of end-of-life plastics poses ongoing environmental concerns. In this study, a method is proposed to upcycle polybutadiene, a commonly used commercial rubber, through a mild, metal-free allylic amination reaction. The resulting materials exhibit tunable thermal and surface wetting properties. Importantly, this approach maintains the original alkene microstructure without any evidence of olefin reduction, olefin transposition, and/or chain scission. The findings suggest potential applications in the remediation of complex elastomers and vulcanized rubbers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Malia B. Wenny, Miranda Walter, Adam H. Slavney, Jarad A. Mason
Summary: In this paper, a generalizable method for the synthesis of fluorinated ionic liquids is reported, which relies on the evolution of gaseous byproducts to drive product formation. This synthetic strategy overcomes solubility challenges that can hinder the synthesis of highly fluorinated ionic liquids via conventional methods and enables a systematic investigation of the effect of fluorination on ionic liquid viscosity and gas solubility.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Multidisciplinary
Yingwei Li, Hong Ki Kim, Ryan D. McGillicuddy, Shao-Liang Zheng, Kevin J. Anderton, Grant J. Stec, Jaehyeong Lee, Dongtao Cui, Jarad A. Mason
Summary: In this study, Au43(C-CtBu)20 and Au42Ag1(C-CtBu)20 metal nanoclusters with open electronic and geometric shells were reported, showing paramagnetism and enhanced catalytic activity from a single coordinatively unsaturated surface metal. These nanoclusters exhibit helical stripes around the inner Au12 kernel, giving them chirality and high thermal stability. Experimental and theoretical calculations showed minimal energy differences between the open-shelled nanoclusters and hypothetical closed-shell systems, and the open-shelled configuration resulted in the largest band gap, thus promoting cluster stability. Additionally, the coordinatively unsaturated surface metals were found to create active sites for catalytic oxidation, leading to high selectivity and conversion. This study provides a promising platform for investigating the magnetic and catalytic properties of noble metal nanoparticles.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Dan Ferenc Segedin, Berit H. Goodge, Grace A. A. Pan, Qi Song, Harrison LaBollita, Myung-Chul Jung, Hesham El-Sherif, Spencer Doyle, Ari Turkiewicz, Nicole K. Taylor, Jarad A. Mason, Alpha T. N'Diaye, Hanjong Paik, Ismail El Baggari, Antia S. Botana, Lena F. Kourkoutis, Charles M. Brooks, Julia A. Mundy
Summary: This study investigates the influence of epitaxial strain on the synthesis and reduction process of Nd4Ni3O10 films, revealing different structures and transport properties on different substrates. The results provide a pathway for the synthesis of Ndn+1NinO2n+2 thin films and set limits on the ability to strain engineer these compounds via epitaxy.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Agnes E. E. Thorarinsdottir, Daniel P. P. Erdosy, Cyrille Costentin, Jarad A. A. Mason, Daniel G. G. Nocera
Summary: Electrocatalysis of small gas molecules using renewable energy sources offers a promising pathway for carbon-neutral fuels and chemicals. However, the low solubility of gas molecules in water limits the energy and power densities of these reactions that rely on water as a source of protons and electrons. In this study, we show that the use of microporous water with hydrophilic external surfaces and hydrophobic internal surfaces significantly enhances the oxygen reduction reaction (ORR) electrocatalysis in water. The use of silicalite-1 nanocrystals as an O-2-concentrating microporous electrolyte solution greatly increases the ORR current, partially limiting the activity of Pt as an ORR catalyst and allowing direct measurement of Pt's intrinsic catalytic ORR activity.
Article
Chemistry, Multidisciplinary
Nina S. S. Pappas, Jarad A. A. Mason
Summary: Control over the size, shape, uniformity, and external surface chemistry of metal-organic framework nanocrystals is crucial for various applications. In this study, the growth of anisotropic Co-2(dobdc) nanorods was investigated in the presence of monotopic modulators. The results showed that the nanorod diameter was strongly influenced by the acidity of the modulator and its incorporation into the nanorod structure. The study also achieved the preparation of sub-10 nm nanorods, which was previously difficult for the M-2(dobdc) family.
Article
Chemistry, Multidisciplinary
Bridget A. Connor, Alexander C. Su, Adam H. Slavney, Linn Leppert, Hemamala I. Karunadasa
Summary: Recent investigations have shown that dimensional reduction affects the band structure of halide double perovskites. When a three-dimensional perovskite is reduced to a two-dimensional perovskite with monolayer thickness, the bandgap undergoes an intriguing change. This study applies an atomic orbitals approach to uncover the orbital basis for this bandgap symmetry transition.
Article
Chemistry, Multidisciplinary
Rebecca L. Siegelman, Joshua A. Thompson, Jarad A. Mason, Thomas M. McDonald, Jeffrey R. Long
Summary: This study demonstrates the potential of the diamine-appended metal-organic framework ee-2-Mg-2(dobpdc) as a next-generation CO2 capture material for high-pressure natural gas purification. The material has a cooperative adsorption mechanism and can be easily regenerated with minimal changes in temperature or pressure. Water enhances the CO2 capture performance of the material by eliminating slip of CO2 before full breakthrough.