Article
Chemistry, Multidisciplinary
Ling Hong, Huifeng Yao, Yong Cui, Pengqing Bi, Tao Zhang, Yongxin Cheng, Yunfei Zu, Jinzhao Qin, Runnan Yu, Ziyi Ge, Jianhui Hou
Summary: Establishing an ideal architecture with selective carrier transport and suppressed recombination is crucial for improving photovoltaic efficiency in organic solar cells (OSCs). By tailoring a hybrid planar/bulk structure, highly efficient OSCs with reduced energy losses were fabricated. The study highlights the potential of precisely regulating the structure of donor:acceptor heterojunction to further enhance the efficiencies of OSCs.
ADVANCED MATERIALS
(2021)
Article
Energy & Fuels
Lijian Zhang, Shuai Cheng, Jian Wang, Tao Chen
Summary: Silver bismuth antimony sulfide (Ag(Bi-x,Sb1-x)S-2) is a promising material for solar cell applications due to its stability, element storage, and tunable bandgap. The authors successfully prepared Ag(Bi-x,Sb1-x)S-2 films with tunable constituents using a solution method, and confirmed its photovoltaic application.
Article
Chemistry, Physical
Mingzhi Lv, Wenzheng Jiang, Zilei Wang, Yonggang Zhao, Yang Wang, Weining Liu, Yujun Fu, Qiming Liu, Junshuai Li, Deyan He
Summary: Researchers have developed a solution-based dopant-free heterojunction solar cell with back-contact structure, achieving an efficiency of 15.4% and a short-circuit current density of 36.6 mA/cm(2). The cell utilizes Nafion film, PEDOT:PSS film, and patterned lithium acetate film as functional layers.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Mingzhi Lv, Zilei Wang, Chaohui Jiao, Yonggang Zhao, Lijun Jin, Yujun Fu, Qiming Liu, Deyan He
Summary: The incorporation of a graphene oxide (GO) layer between the Ag electrode and PEDOT:PSS layer in Si/PEDOT:PSS HHSCs leads to the formation of a strong inversion layer near the Si/PEDOT:PSS interface, resulting in the Si/PEDOT:PSS junction converting into a quasi p-n junction. This structure enhances the built-in potential and suppresses carrier recombination at the interface, resulting in a high-efficiency solar cell with improved performance on textured Si substrate.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Chenbo Min, Yihui Chen, Yonglin Yang, Hongzhao Wu, Bailin Guo, Sirui Wu, Qichuan Huang, Donghuan Qin, Lintao Hou
Summary: A new phosphine-doping strategy was developed to enhance the performance of CdTe nanocrystal solar cells, resulting in a power conversion efficiency (PCE) of 5.41%. Phosphine doping was found to increase the carrier concentration, improve carrier mobility, and prolong carrier lifetime, leading to significant improvement in the performance of CdTe nanocrystal solar cells.
Article
Materials Science, Multidisciplinary
Wenzheng Jiang, Yu Wang, Chaohui Jiao, Yang Wang, Yonggang Zhao, Mingzhi Lv, Zining Fan, Yujun Fu, Junshuai Li, Qiming Liu, Deyan He
Summary: With the introduction of dopant-free carrier-selective contact, Si-based heterojunction solar cells can reduce production costs while maintaining high efficiency. Low-temperature solution processing using inorganic metal oxide semiconductor material ZnO has advantages over conventional silicon solar cells. However, research on low-cost and high-efficiency solar cells based on p-type crystalline silicon is relatively rare.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Rong Liu, Zhitao Shen, Liangxin Zhu, Jia Huang, Huilin Li, Junwei Chen, Chao Dong, Tao Chen, Shangfeng Yang, Chong Chen, Mingtai Wang
Summary: Solution-processed material systems are crucial for low-cost and efficient solar cells. In this study, a cadmium sulfide (CdS) interfacial engineering method was used to enhance the performance of antimony trisulfide (Sb2S3) based solar cells. The CdS interfacial layer improved the charge collecting efficiency and resulted in a high open-circuit voltage (V (oc)) of 0.76 V, the highest among solution-processed Sb2S3 solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Rongzong Shen, Zongheng Sun, Yanbin Shi, Yurong Zhou, Wanwu Guo, Yuqin Zhou, Hui Yan, Fengzhen Liu
Summary: Hybrid heterojunction solar cells using Si nanowires as the absorber and PEDOT:PSS as the hole-selective transport layer show great potential. By incorporating organosilane into the PEDOT:PSS solution, the surface tension of PEDOT:PSS can be decreased and the wettability between PEDOT:PSS and SiNWs can be increased, leading to enhanced surface passivation quality of the SiNWs. This approach provides a simple and promising method to achieve high-performance solar cells.
Article
Energy & Fuels
Hoon-Seok Jeong, Dongeon Kim, Seungin Jee, Min-Jae Si, Changjo Kim, Jung-Yong Lee, Yujin Jung, Se-Woong Baek
Summary: The fabrication of heterostructures via solution process is a crucial technology for efficient advanced-generation optoelectronics. Hybrid structures using colloidal quantum dots (CQD) and organic semiconducting molecules are gaining research interest due to their complementary optical and electrical properties. However, the challenge lies in blending and stabilizing the materials to form a functioning electronic ink.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Dezhang Chen, Sunil B. Shivarudraiah, Pai Geng, Michael Ng, C-H Angus Li, Neha Tewari, Xinhui Zou, Kam Sing Wong, Liang Guo, Jonathan E. Halpert
Summary: This study demonstrates the fabrication and performance of inverted solar cells using AgBiS2 nanocrystals, which show higher power conversion efficiency and higher short-circuit current compared to conventional solar cells. The study suggests the potential for further improvements in efficiency and eventual large-scale production.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Chaohui Jiao, Hao Su, Mingzhi Lv, Yonggang Zhao, Wei Xiao, Yujun Fu, Dequan Liu, Junshuai Li, Qiming Liu, Deyan He
Summary: Organic-inorganic hybrid heterojunction solar cells based on p-type silicon were successfully prepared via a low-temperature solution method, achieving a preliminary power conversion efficiency over 4% through optimization of organic thin-film deposition and organic/inorganic interface. This offers a new idea and potential for the development of low-cost, high-performance solar cells.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Yanyan Li, Ruiming Li, Zhenglin Jia, Bin Yu, Yujie Yang, Songxue Bai, Michael Pollard, Yong Liu, Ye Ma, Henner Kampwerth, Qianqian Lin
Summary: Antimony-based chalcogenides, particularly binary Sb2S3 thin films, have shown great potential for optoelectronic applications due to their easy fabrication, low cost, decent charge transport and superior stability. In this work, Ag ions were introduced to the Sb2S3 sol-gel precursors, resulting in enhanced crystallinity and charge transport properties, leading to improved performance of Sb2S3 solar cells.
Article
Chemistry, Physical
Yanjie Wu, Nan Ding, Yuhong Zhang, Bin Liu, Xinmeng Zhuang, Shuainan Liu, Zhaogang Nie, Xue Bai, Biao Dong, Lin Xu, Donglei Zhou, Hongwei Song
Summary: This study focuses on extending the near-infrared (NIR) spectral response and increasing ultraviolet (UV) utilization for perovskite solar cells (PSCs). By integrating new organic bulk-heterojunction and gold nanotriangles, the NIR spectral response of PSCs is extended to 1100 nm. The study also demonstrates the potential of CsPbCl3:Yb3+, Ce3+, Cr3+ nanophosphors for down-conversion in PSCs, resulting in a significant increase in power conversion efficiency (PCE) and short circuit current density (Jsc).
ADVANCED ENERGY MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Kishan Lal Kumawat, Deependra Kumar Singh, Karuna Kar Nanda, Saluru Baba Krupanidhi
Summary: Metal dichalcogenide semiconductors have shown great performance in various optoelectronic applications, but low carrier mobility has restricted their use in highly responsive photodetectors. By incorporating SnSe2 with reduced graphene oxide (RGO) to form a SnSe2-RGO bulk heterojunction and depositing it on a MoS2 film, a self-powered photodetector with excellent performance was achieved.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Huanran Li, Lin Ma, Fengyi Yang, Jiaxing Li, Su You, Qing Yang
Summary: A mild solution-phase synthetic route was designed to fabricate SnSe/MoSe2 heterojunction-like hybrid nanosheets with improved transport properties. These nanosheets were used to construct a vertical photodetector over a Si-wafer substrate for high response speed and wide-spectrum detection. Under 1064 nm illumination with an intensity of 2 mu W cm-2, the photodetector exhibited high responsivity (33.2 A W-1), high detectivity (5.1 x 1012 Jones), and fast response speed (283 mu s).
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Nima Taghipour, Guy L. Whitworth, Andreas Othonos, Mariona Dalmases, Santanu Pradhan, Yongjie Wang, Gaurav Kumar, Gerasimos Konstantatos
Summary: A binary blend of CQDs and ZnO nanocrystals is used to passivate trap states in PbS-CQD gain medium, leading to improved Auger lifetime and suppression of trap-assisted Auger recombination. Integration of this binary blend with a DFB resonator has demonstrated stable single-mode lasing emission with low threshold and continuous operation of 5 hours under room temperature and ambient conditions.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Avijit Saha, Gaurav Kumar, Santanu Pradhan, Gauttam Dash, Ranjani Viswanatha, Gerasimos Konstantatos
Summary: Selective spectral detection of ultraviolet (UV) radiation is highly important in various fields, and this study introduces a quantum dot-based sensing scheme that expands the spectral coverage of silicon complementary metal-oxide-semiconductor (CMOS) sensors into the UV range, enabling efficient UV detection without affecting visible and UV-band discrimination.
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Wei-Chih Wang, Kyohei Nakano, Daisuke Hashizume, Chain-Shu Hsu, Keisuke Tajima
Summary: This study investigates the effects of intramolecular interactions on spontaneous orientation polarization (SOP) in thin films by synthesizing different derivatives of TPBi. The results show that the introduction of ethyl groups enhances SOP in the films, with the p-substituted derivative exhibiting the best performance. The conformational change of the molecules is identified as the main factor underlying the SOP enhancement.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Kyohei Nakano, Fengkun Chen, Yumiko Kaji, Keisuke Tajima
Summary: A sequential deposition strategy is shown to reliably control the molecular orientations in mixed bulk heterojunction (BHJ) films, leading to enhanced efficiency in organic photovoltaics (OPVs).
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Chao Wang, Hua Hao, Keisuke Tajima
Summary: A diradicaloid molecule with high semiconducting performance has been synthesized based on the quinoidal benzo[1,2-b:4,5-b']dithiophene structure. The diradical character and its influence on the electronic properties are investigated. The diode devices based on this molecule exhibit a large change in electric current in magnetic fields below 100 mT, with a strong dependence on the measurement temperatures. This is attributed to the population of triplet diradicals at high temperatures, leading to significant magnetoconductance values. The study highlights the essential role of triplet diradicals in achieving negative magnetoconductance in organic molecules.
Article
Electrochemistry
Justyna Piwek, Adam Slesinski, Krzysztof Fic, Sergio Aina, Alen Vizintin, Blaz Tratnik, Elena Tchernychova, Maria Pilar Lobera, Maria Bernechea, Robert Dominko, Elzbieta Frackowiak
Summary: This study presents an electrode material with enhanced power and high capacitance, which is obtained from carbonized adenine precursor. The carbon material exhibits a micro/mesoporous structure with optimal pore size ratio and high surface area. The carbon/carbon symmetric capacitor shows good electrochemical response and cyclability, indicating its potential for high-power stationary applications.
ELECTROCHIMICA ACTA
(2022)
Article
Nanoscience & Nanotechnology
Shuaifeng Hu, Jorge Pascual, Wentao Liu, Tsukasa Funasaki, Minh Anh Truong, Shota Hira, Ruito Hashimoto, Taro Morishita, Kyohei Nakano, Keisuke Tajima, Richard Murdey, Tomoya Nakamura, Atsushi Wakamiya
Summary: Perovskite interfaces play a critical role in the performance of photovoltaic devices. In this study, the universality of perovskite top surface posttreatment with ethylenediammonium diiodide (EDAI2) for p-i-n devices was demonstrated. The treatment successfully improved the efficiency and stability of the devices, with enhancements in the open-circuit voltage. The versatility of this treatment makes it highly appealing for industrial application.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Nima Taghipour, Mariona Dalmases, Guy L. Whitworth, Miguel Dosil, Andreas Othonos, Sotirios Christodoulou, Shanti Maria Liga, Gerasimos Konstantatos
Summary: This study utilizes PbS/PbSSe core/alloyed-shell colloidal quantum dots (CQDs) as a gain medium for infrared laser devices. The researchers achieved highly suppressed Auger recombination and lower amplified spontaneous emission (ASE) threshold by doping these engineered CQDs and successfully achieved near-infrared laser emission.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kyohei Nakano, Yumiko Kaji, Keisuke Tajima
Summary: This study demonstrates that narrower density of states (DOS) widths in the polymer channels lead to higher mobility (μ), smaller subthreshold swing (S), and lower contact resistance (R-C) in organic field-effect transistors (OFETs).
Article
Green & Sustainable Science & Technology
Ignacio Cazcarro, Sergio Villamayor-Tomas, Maria Pilar Lobera, Joaquin Murria, Maria Bernechea
Summary: In this article, the governance of point-source water pollution in the European agri-food sector is analyzed, focusing on the case study of the wine industry in Aragon (Spain) using the networks of action situations approach. The strategic decisions of wine producers regarding water discharge regulations compliance are explored, and the feasibility and effectiveness of potential solutions are examined. The problem of peak load discharges in the sector is found to be influenced by the strategic behavior of wine producers, enforcement deficits, specificities of wine production, and controversies surrounding public treatment plants. Coordination between wine producers and treatment plant managers, along with economic incentives and stricter enforcement, would be necessary for promising solutions.
SUSTAINABILITY SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Nima Taghipour, Mariona Dalmases, Guy Luke Whitworth, Yongjie Wang, Gerasimos Konstantatos
Summary: Achieving low-threshold infrared stimulated emission in solution-processed quantum dots is critical for real-life applications. This Letter demonstrates the potential of ultra-low-threshold infrared stimulated emission using cascade charge transfer (CT) in Pb-chalcogenide colloidal quantum dot (CQD) solids.
Article
Chemistry, Multidisciplinary
Shanti Maria Liga, Yongjie Wang, Gerasimos Konstantatos
Summary: Cs2TiBr6 is a promising material that can be used as a lead-free alternative in photovoltaics. However, its instability in air has been a challenge, limiting further improvements and raising concerns about practical implementation. This study presents a method to enhance the stability of Cs2TiBr6 NCs by using SnBr4 in a simple surface treatment.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Adam Slesinski, Sylwia Sroka, Sergio Aina, Justyna Piwek, Krzysztof Fic, M. Pilar Lobera, Maria Bernechea, Elzbieta Frackowiak
Summary: The concept of a double-redox electrochemical capacitor operating in an aqueous electrolyte is proposed in this paper. The redox activity of sulphur from insoluble Bi2S3 nanocrystals is demonstrated, and the use of MPA as a ligand attached to the surface of the nanocrystals significantly boosts the performance. The combination of redox activity and iodide reactions enables the formation of a discharge voltage plateau, effectively boosting the capacitance and specific energy of the device.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Kyohei Nakano, Iat Wai Leong, Daisuke Hashizume, Kirill Bulgarevich, Kazuo Takimiya, Yusuke Nishiyama, Toshio Yamazaki, Keisuke Tajima
Summary: This study develops a new synthetic route to synthesize several new BIT derivatives. The properties of these derivatives are investigated experimentally and computationally, revealing rapid tautomerization in solution and solid state. It is also found that one of the derivatives exhibits good charge transport performance in an organic field effect transistor.
Article
Chemistry, Multidisciplinary
Ignasi Burgues-Ceballos, Yongjie Wang, Gerasimos Konstantatos
Summary: The study combines small-size and large-size AgBiS2 nanocrystals to optimize the band alignment in photovoltaic and photodetector devices. By fabricating a gradient absorbing layer, the charge transfer and transport efficiency of the devices are improved, achieving promising performance.
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)
