Article
Chemistry, Multidisciplinary
Jiacheng He, Wangping Sheng, Jia Yang, Yang Zhong, Yang Su, Licheng Tan, Yiwang Chen
Summary: A porous PbI2 layer with ordered array structure is successfully fabricated by integrating a succinamide (SA) additive with nanoimprinting technology, leading to omnidirectional diffusion and sufficient conversion to perovskites. The unencapsulated device achieves an efficiency of 23.56% and excellent long-term humidity stability. The perovskite solar cell and module achieve impressive efficiencies of 21.57% and 16.42%, respectively. This work paves the way for large-scale fabrication of high-performance perovskite photovoltaic devices.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Huxin Luo, Xingchong Liu, Jia Zhuang, Haimin Li, Hanyu Wang, Zhu Ma, Yan Xiang, Xian Peng, Yukun Ouyang, Ruonan Zhou, Xiaoli Gong
Summary: By doping alizarin red s (ARS) into MAPbI(3) films, the quality and light absorption ability of perovskite films can be improved, reducing defect density and enhancing PL intensity and carrier lifetimes.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Ilenia Viola, Fabio Matteocci, Luisa De Marco, Leonardo Lo Presti, Silvia Rizzato, Simona Sennato, Alessandra Zizzari, Valentina Arima, Antonio De Santis, Chiara Rovelli, Silvio Morganti, Matthias Auf Der Maur, Marianna Testa
Summary: Organometal halide perovskites (OMHP) are promising materials for fast, sensitive, and large area photodetectors. In this study, a controlled growth of OMHP single crystals in the form of microwires directly on conductive patterned substrates was achieved using a microfluidics-assisted technique. The resulting vertical devices with a pixelated sensor layer exhibit gain, a responsivity up to 200 AW(-1), and a fast rise time down to 35 µs. This is the first demonstration of an OMHP vertical device on a patterned substrate using microfluidics-assisted techniques.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Pei-Ying Lin, Chen-Fu Lin, Yueh-Ya Chiu, Hong-Hsueh Chen, Ming-Hsien Li, Rajendran Raja, Chun-Sheng Wu, Cheng-Hung Hou, Silver Sung-Yun Hsiao, Jing-Jong Shyue, Der-Chuen Lee, Sheng-Zhu Ho, Yi-Chun Chen, Peter Chen
Summary: This study verifies the use of pseudo-halide anion thiocyanate as an additive in composition-engineered perovskite films and investigates its impact on the performance of perovskite solar cells (PSCs). It is observed that the incorporation of thiocyanate ions in the perovskite film significantly increases the domain size. Moreover, the presence of thiocyanate groups inside the perovskite bulk is confirmed, and it effectively suppresses bulk recombination in the perovskite film, leading to an improvement in the open-circuit voltage (VOC) and fill factor for the pseudo-halide-based PSCs.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Physical
Pei-Ying Lin, Aswaghosh Loganathan, Itaru Raifuku, Ming-Hsien Li, Yueh-Ya Chiu, Shao-Tung Chang, Azhar Fakharuddin, Chen-Fu Lin, Tzung-Fang Guo, Lukas Schmidt-Mende, Peter Chen
Summary: Perovskite solar cells have achieved high power conversion efficiency, but the intrinsic instability of perovskite materials remains a key issue. Studies have shown that mixed-halide perovskites and other negative monovalent ions can improve stability. This review presents the evolution and applications of pseudo-halide perovskite solar cells.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Xiaomin Liang, Yanru Guo, Shuai Yuan, Dongping Zhu, Yi Wang, Yujun Qin, Jian-Ping Zhang, Xi-Cheng Ai
Summary: This study proposes a solution to the trade-off issue between charge transport and charge recombination in perovskite solar cells by using lithium-doped graphite carbon nitride (CN-Li), leading to improved power conversion efficiency.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Motoshi Nakamura, Issei Takenaka, Takashi Mabuchi, Chie Nishiyama, Keishi Tada, Takeru Bessho, Hiroshi Segawa
Summary: Organometal halide perovskites (OHPs) have attracted attention as promising materials for next-generation solar cells. This study investigates the effects of K-doping on the thermal stability of mixed OHPs. The results show that K-doping can improve the thermal stability of the perovskites, and the doped material remains stable after 10,000 hours of heating.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Physical
Ya-Nan Zhang, Qun Li, Bo Li, Cheng-Xiang Wang
Summary: In recent decades, significant progress has been made in enhancing the energy conversion efficiency of perovskite materials, particularly in perovskite solar cells (PSCs). However, the presence of defects remains a major challenge that hinders the improvement of photovoltaic performance and long-term stability. This article provides a systematic review of defect determination techniques, highlighting the importance of efficient experimental characterization methods in understanding and mitigating defects in PSCs. The comprehensive account of multiscale defect characterizations presented in this study may serve as a valuable reference for future efforts in passivation studies and the development of high-performance PSCs.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Emilio Gutierrez-Partida, Hannes Hempel, Sebastian Caicedo-Davila, Meysam Raoufi, Francisco Pena-Camargo, Max Grischek, Rene Gunder, Jonas Diekmann, Pietro Caprioglio, Kai O. Brinkmann, Hans Koebler, Steve Albrecht, Thomas Riedl, Antonio Abate, Daniel Abou-Ras, Thomas Unold, Dieter Neher, Martin Stolterfoht
Summary: Recent advancements in perovskite solar cell research have focused on improving efficiency and stability by developing high-quality double cation perovskite materials. The low-bandgap cells exhibited high fill factor and short-circuit current, showcasing reduced charge transport losses. The implied efficiency in the neat material reached 28.4% through minimizing interfacial recombination and optical losses.
ACS ENERGY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Zhang Lei, Li Shugang, Zhang Tianjun, Song Shuang, Pan Hongyu
Summary: A novel solvent-induced fabrication method was reported to synthesize a high-quality perovskite thin film, which was applied to prepare a stable flexible photodetector. The flexible PD exhibited excellent performance and long-term stability.
FRONTIERS IN MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Shilpi Singh, Saurabh Kumar, Manish Deo, R. K. Chauhan
Summary: In this paper, we enhance the performance of optoelectronic devices using organometal halide perovskite material. By optimizing the multiple layers of the device through numerical simulation techniques, we achieved the best performance. The results of this study pave the way for future research in photodetectors.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Physics, Applied
Insang You, Yong-Young Noh
Summary: This Perspective provides a brief overview of the development of high-performance Sn-based perovskite TFTs, highlighting the advantages of Sn-based MHPs for TFTs and recent studies on improving device performance. The challenges that need to be addressed to achieve high-performance TFTs are also emphasized.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Jianheng Zhou, Mingwei Hao, Yu Zhang, Xue Ma, Jianchao Dong, Feifei Lu, Jie Wang, Ning Wang, Yuanyuan Zhou
Summary: In this study, a surface-dedoping approach is used to enhance the efficiency of tin perovskite solar cells. By optimizing the film morphology, negative effects are avoided. The method also improves carrier lifetime and reduces trap density, resulting in higher device efficiency. Furthermore, the tin perovskite solar cells exhibit stability even after long-term storage.
Article
Chemistry, Multidisciplinary
Ju-Hyeon Kim, Yong Ryun Kim, Juae Kim, Chang-Mok Oh, In-Wook Hwang, Jehan Kim, Stefan Zeiske, Taeyoon Ki, Sooncheol Kwon, Heejoo Kim, Ardalan Armin, Hongsuk Suh, Kwanghee Lee
Summary: In this study, a new nonconjugated polyelectrolyte (poly-BCP) was synthesized and introduced as a passivation layer between tin oxide and organometal halide perovskite. It effectively suppressed nonradiative recombination, resulting in improved efficiency and stability of solar cells.
ADVANCED MATERIALS
(2022)
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, Multidisciplinary
Zhengju Zhu, Huajie Yin, Yun Wang, Cheng-Hao Chuang, Lei Xing, Mengyang Dong, Ying-Rui Lu, Gilberto Casillas-Garcia, Yonglong Zheng, Shan Chen, Yuhai Dou, Porun Liu, Qilin Cheng, Huijun Zhao
ADVANCED MATERIALS
(2020)
Article
Engineering, Manufacturing
Jinzheng Yang, Yanling Xu, Yangyang Song, Gongkai Wang, Fuxing Yin, Haitao Liu, Wenjing Yuan
Summary: Fiber-based architectures offer significant advantages in wearable electronics, with the arrangement of fibers strongly influencing their strain sensitive behavior. Introducing a mechanical-guided step to maintain a constant microcrack density in fiber patterns can enhance the strain sensitivity and stability.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Physical
Fuxing Yin, Peng Yang, Wenjing Yuan, Alexander Semencha, Chengwei Zhang, Puguang Ji, Gongkai Wang
Summary: A flexible and free-standing MoSe2/MXene film with sandwich structure was developed as an anode for SICs and LICs, showing improved electrochemical activity and reaction kinetics. The optimized film exhibited enhanced Li/Na storage performances, with high energy/power densities and long lifespans, demonstrating the potential for future flexible energy storage devices.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Analytical
Yaxu Zhao, Shaohua Wang, Wenjing Yuan, Shurui Fan, Zhongqiu Hua, Yi Wu, Xuemin Tian
Summary: Gas sensors based on In2O3 exhibited high sensitivity to methane when loaded with Pd. However, they also showed high cross-sensitive responses to NO2, CO, and ethanol. By adding a Pt-Al2O3 catalyst film filter, the sensors were able to selectively respond to methane even in the presence of interfering gases. The catalytic conversion of CO and ethanol to CO2 and H2O, as well as the blocking of nitrogen dioxide molecules on the surface of the catalyst film, contributed to the improved selectivity of the sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Yanting Tang, Kai Yang, Zhongqiu Hua, Fuxing Yin, Wenjing Yuan
Summary: By incorporating chemically passivated phosphorene with a porous polymer, a new sensing material design was developed for improved gas sensing performance, including extended ambient stability and enhanced sensitivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Composites
Xinxin Li, Jinzheng Yang, Wenjing Yuan, Puguang Ji, Zhaobo Xu, Shunan Shi, Xiaojing Han, Weixiang Niu, Fuxing Yin
Summary: In this study, a microstructured MXene/polyurethane fibrous membrane was designed to enhance strain sensing properties through microcracks, porous network, and microwrinkle patterns. The highly stretchable and conductive membrane showed an extremely high gauge factor of 1000 and wide sensing range up to 120%. Sensitivity and sensing range can be easily tailored by adjusting the micropatterns.
COMPOSITES COMMUNICATIONS
(2021)
Article
Engineering, Manufacturing
Wenjing Yuan, Haitao Liu, Xihua Wang, Li Huang, Fuxing Yin, Ye Yuan
Summary: An intelligent EMI shielding switch has been developed to achieve both microwave shielding and transmitting functions on a single material. The switch can smartly regulate its absorption-dominant EMI SE value in the S-band, providing a novel solution for actual wireless communication needs through simple operation.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Nanoscience & Nanotechnology
Yangyang Song, Yanling Xu, Qing Guo, Zhongqiu Hua, Fuxing Yin, Wenjing Yuan
Summary: A TiO2 nanoparticle-spaced reduced graphene oxide (RGO) assembly was reported for the design of highly sensitive gas sensors, with TiO2 nanospacers derived from polarized MXene intercalated between highly wrinkled RGO sheets in micron-scale pores, leading to restricted particle growth and improved gas sensitivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Multidisciplinary
Jinzheng Yang, Yanling Xu, Qing Guo, Fuxing Yin, Wenjing Yuan
Summary: This study developed a high-performance pressure sensor with periodic wrinkles and fibrous network structure, exhibiting high sensitivity, wide working range, and good mechanical stability. With surface treatment, the sensor achieved long-term reliable sensing, high stretchability, and resistance to lateral strain, suitable for future e-skin applications.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Yanling Xu, Xiaofang Li, Yangyang Song, Ruiguang Zhang, Wenjing Yuan, Dan Xia, Qingzhong Xue, Fuxing Yin
Summary: Modifying the end groups of black phosphorus (BP) nanosheets through silanization treatment can enhance their chemical stability in humid environments, leading to improved gas sensing performance, particularly in the detection of NO2. Such modification with fluoroalkylsilane results in a 3.9-fold increase in sensitivity to NO2 and stable sensing response under varying relative humidity conditions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Yanting Tang, Yanling Xu, Jinzheng Yang, Yangyang Song, Fuxing Yin, Wenjing Yuan
Summary: A stretchable and wearable gas sensor was fabricated using MXene/polyurethane (PU) core-sheath fibers, showing high sensitivity, wide sensing range, and high signal-to-noise ratio. Microstructures, including microcracks and microwrinkles, were developed to further improve the sensing performance, leading to a highly stretchable fiber-based gas sensor with minimal interference from tensile strain. The results provide insight into utilizing microstructure engineering to tailor the sensing performance of gas sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Chemistry, Multidisciplinary
Shan Chen, Huajie Yin, Porun Liu, Yun Wang, Huijun Zhao
Summary: Solar-energy-powered photocatalytic fuel production and chemical synthesis using halide perovskites as photocatalysts are discussed in this review. The challenges and advanced strategies to enhance stability and activity of halide perovskite photocatalysts (HPPs) are comprehensively reviewed. The potential applications of HPPs in efficient fuel production and chemical synthesis are highlighted, emphasizing their irreplaceable role in the field of photocatalysis.
ADVANCED MATERIALS
(2023)
Article
Energy & Fuels
Jian Kang, Junxian Liu, Oscar Allen, Mohammad Al-Mamun, Porun Liu, Huajie Yin, Yun Wang, Shan Chen, Huijun Zhao
Summary: Through density functional theory calculations, this study reveals the excellent optoelectronic properties of bismuth-based perovskite CsBi3I10. High-quality CsBi3I10 films were fabricated through gas-assisted spin-coating and solvent vapor annealing in ambient conditions. The optimized inverted structure achieved a high power conversion efficiency in CsBi3I10-based perovskite solar cells.
Article
Chemistry, Physical
Qing Guo, Weiwei Pang, Xia Xie, Yanling Xu, Wenjing Yuan
Summary: This study presents a multi-level structured fiber design that addresses the challenges of sensitivity and sensing range as well as conductivity and mechanical properties in wearable strain sensors. The fiber demonstrates high sensitivity and a wide sensing range, while also offering stretchability and conductivity suitable for other applications such as gas sensing.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Jian Kang, Shan Chen, Mengmeng Hao, Junxian Liu, Mohammad Al-Mamun, Porun Liu, Yun Wang, Huajie Yin, Huijun Zhao
Summary: In this study, an ion substitution strategy was employed to improve the morphology of CsBi3I10 film and enhance the light utilization. The Sb-substituted CsBi3I10 film exhibited a bulk-heterojunction structure with PCBM, enabling efficient exciton separation. The solar cell assembled using Cs(Bi0.7Sb0.3)(3)I-10 achieved a champion power conversion efficiency of 1.54% and a high V-oc of 0.81 V.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
