Article
Chemistry, Multidisciplinary
Hsinhan Tsai, Dibyajyoti Ghosh, Eli Kinigstein, Bogdan Dryzhakov, Honora Driscoll, Magdalena Owczarek, Bin Hu, Xiaoyi Zhang, Sergei Tretiak, Wanyi Nie
Summary: The dynamic structure changes in metal halide perovskite lattice upon photoexcitation and its impact on carrier transport properties in Ruddlesden-Popper phase perovskite thin films are reported in this study. Time-resolved X-ray scattering technique reveals rapid lattice expansion and slow relaxation over 100 ns after photoexcitation. The expansion is attributed to lattice thermal fluctuations caused by photon energy deposition. High laser powers induce strong local structural disorder, increasing the charge dissociation activation energy and leading to localized transport.
Article
Chemistry, Physical
Rui Tui, Haojie Sui, Jingwei Mao, Xuemiao Sun, Haiyan Chen, Yanyan Duan, Peizhi Yang, Qunwei Tang, Benlin He
Summary: In this study, a novel three-dimensional Fe-2 O-3 @SnO2 heterostructure composite is prepared as an efficient mesoporous electron transport layer (ETL) to improve the light absorption and quality of all-inorganic CsPbBr3 perovskite solar cells (PSCs). The composite exhibits high conductivity and electron mobility due to its Type-II band alignment and matched lattice spacing. The mesoporous ETL provides more active surface for CsPbBr3 precursor solution and reduces the barrier for heterogeneous nucleation, resulting in the growth of a high-quality perovskite film. As a result, the light-harvesting capability, photoelectron transport, extraction, and charge recombination are improved, leading to an optimized power conversion efficiency of 10.23% and a high short-circuit current density of 7.88 mA cm(-2).
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Huanhuan Yao, Tai Wu, Cheng Wu, Liming Ding, Yong Hua, Feng Hao
Summary: This study aims to improve the exciton binding energy and film quality of 2D Dion-Jacobson (DJ) tin halide perovskite by designing organic spacers. The results show that ortho-phenylenediamine (o-PDA) spacer reduces the exciton binding energy and enhances structural stability, resulting in dense and uniform high-quality films. Furthermore, o-PDA spacer enables effective charge transfer and achieves a record power conversion efficiency of 7.18% for 2D DJ (o-PDA)FA3Sn4I13 solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Arivazhagan Valluvar Oli, Zinuo Li, Yu Chen, Aruna Ivaturi
Summary: This study investigates the use of perovskite solar cells for energy harvesting from indoor near-UV LED lights. The optimized solar cells achieved high power conversion efficiencies and power output when measured under near-UV illumination. UV-stable solar cells fabricated with a modified electron transport layer showed improved stability and performance under UV exposure.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Linfang Yan, Junjie Ma, Pengwei Li, Shuangquan Zang, Liyuan Han, Yiqiang Zhang, Yanlin Song
Summary: This article summarizes the recent advances in carrier behavior of 2D Ruddlesden-Popper perovskite solar cells (PSCs) and provides guidelines and strategies for enhancing carrier transport.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yiting Jiang, Jiabin Wang, Huachao Zai, Dongyuan Ni, Jiayu Wang, Peiyao Xue, Nengxu Li, Boyu Jia, Huanjun Lu, Yu Zhang, Feng Wang, Zhenyu Guo, Zhaozhao Bi, Haipeng Xie, Qian Wang, Wei Ma, Yingfeng Tu, Huanping Zhou, Xiaowei Zhan
Summary: A series of fullerene dyads were designed and used as electron transport materials in inverted perovskite solar cells. Among them, FP-C8 showed the best performance in terms of energy disorder and morphological stability. Devices using FP-C8 as the electron transport material achieved higher power conversion efficiency compared to those using traditional PCBM. Moreover, FP-C8-based devices exhibited better moisture and thermal stability.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Jiaying Wu, Hyojung Cha, Tian Du, Yifan Dong, Weidong Xu, Chieh-Ting Lin, James R. Durrant
Summary: The dynamics of charge carriers in organic solar cells and organic-inorganic hybrid metal halide perovskite solar cells were compared, discussing similarities and differences in charge generation, separation, transport, collection, and recombination, as well as their impact on device performance.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Liang Wang, Shuzhang Yang, Qianji Han, Fengyang Yu, Hong Zhang, Xiaoyong Cai, Chu Zhang, Liguo Gao, Tingli Ma
Summary: This study successfully prepared perovskite solar cells with an efficiency of 12.01% using the simplest device structure, demonstrating excellent long-term stability. This provides a new approach to reduce production costs and simplify production of PSCs.
Article
Multidisciplinary Sciences
Jing Zhou, Zonghao Liu, Peng Yu, Guoqing Tong, Ruijun Chen, Luis K. Ono, Rui Chen, Haixin Wang, Fumeng Ren, Sanwan Liu, Jianan Wang, Zhigao Lan, Yabing Qi, Wei Chen
Summary: Perovskite solar cells with multiple-barrier encapsulation exhibit good stability, maintaining high efficiency even after continuous operation for thousands of hours.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Hyojung Bae, Vishal Burungale, Wonkyeong Na, Hokyun Rho, Soon Hyung Kang, Sang-Wan Ryu, Jun-Seok Ha
Summary: The g-C3N4/CuO nanostructure prepared using electrodeposition and thermal oxidation exhibited improved photoelectrochemical properties due to increased surface area and enhanced charge transportation. This photocathode can be used in innovative strategies to address issues with low-efficiency CuO photocathodes.
Article
Chemistry, Multidisciplinary
Peng Chen, Juntao Hu, Maotao Yu, Peicheng Li, Rui Su, Zaiwei Wang, Lichen Zhao, Shunde Li, Yingguo Yang, Yuzhuo Zhang, Qiuyang Li, Deying Luo, Qihuang Gong, Edward H. Sargent, Rui Zhu, Zheng-Hong Lu
Summary: This study reports the refinement of halide perovskite heterojunction interfaces to produce stable and efficient solar cells. These cells also function effectively as ultralow-voltage light-emitting diodes (LEDs) with an external quantum efficiency of electroluminescence (EQE(EL)) of 3.3%. The refinement process involves using wide-bandgap salts to improve the packing density of perovskite grains and enlarge the bandgaps of the perovskite surfaces in contact with charge-transporting semiconductors. The resulting perovskite enables the development of a simple device with dual functions of solar cells and LEDs. Such all-in-one devices have the potential to be used in multifunctional harvesting-storage-utilization (HSU) systems.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Pengpeng Teng, Sebastian Reichert, Weidong Xu, Shih-Chi Yang, Fan Fu, Yatao Zou, Chunyang Yin, Chunxiong Bao, Max Karlsson, Xianjie Liu, Jiajun Qin, Tao Yu, Wolfgang Tress, Ying Yang, Baoquan Sun, Carsten Deibel, Feng Gao
Summary: One of the critical challenges in perovskite light-emitting diodes (PeLEDs) is poor operational stability, but a unique self-repairing behavior has been discovered where the electroluminescence of moderately degraded PeLEDs can almost completely restore after resting. By understanding the back diffusion of accumulated halides, which repair vacancies in the perovskite layer, the operational stability of PeLEDs can be significantly improved by passivating the key interface.
Review
Chemistry, Multidisciplinary
Randi Azmi, Shynggys Zhumagali, Helen Bristow, Shanshan Zhang, Aren Yazmaciyan, Anil Reddy Pininti, Drajad Satrio Utomo, Anand S. Subbiah, Stefaan De Wolf
Summary: The commercialization of perovskite solar cells is hindered by the instability caused by moisture. However, by engineering device materials and improving encapsulation methods, the moisture resilience of perovskite solar cells can be enhanced.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Wanchun Xiang, Shengzhong (Frank) Liu, Wolfgang Tress
Summary: Metal halide inorganic perovskite materials are of interest for photovoltaic applications due to their superior thermal stability. Solar cells based on inorganic perovskites have achieved a PCE over 20%, with more room for improvement compared to organic-inorganic hybrid perovskite solar cells. Interfaces play a crucial role in limiting the photovoltage and charge extraction efficiency in inorganic perovskite solar cells.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Yifang Qi, David Ndaleh, William E. Meador, Jared H. Delcamp, Glake Hill, Nihar Ranjan Pradhan, Qilin Dai
Summary: Through designing organic cationic cyanine dye molecules with different HOMO and LUMO states, passivating the interface between PC61BM and Ag electrode, significant reduction in charge recombination in photovoltaic devices is achieved, leading to improved charge transport, enhanced power conversion efficiency, and stability.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Electrochemistry
Omar E. Solis, Carolina Fernandez-Saiz, Jesus Manuel Rivas, Diego Esparza, Silver-Hamill Turren-Cruz, Beatriz Julian-Lopez, Pablo P. Boix, Ivan Mora-Sero
Summary: This manuscript presents an easy, fast and environmentally-friendly method to prepare alpha-FAPbI3 black powders for solar cells. The presynthesized FAPbI3-based solar cell achieved a maximum PCE value of 18.15%, comparable to PSCs fabricated through conventional procedures. Moreover, the addition of MACl improved the efficiency of the final device by increasing the grain size and eliminating the residual 6-phase perovskite.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Ceramics
Shikang Xiao, Jianzhang Li, Xinran Liu, Zixuan Chang, Panxin Huang, Antong Zhang, Yuhang Tian, Xu Zhang, Jingde Zhang, Guifang Han
Summary: Hafnia doping improves the performance of environmental barrier coatings (EBCs) for SiC-based ceramic composites. The optimal doping ratio, HfO2 distribution, and oxidation mechanism of the bond layer are still under investigation. A prototype Si-HfO2 bond layer with a designed HfO2-rich area was used to study its oxidation behavior. Simulation results suggest that 20-30 vol% of HfO2 is the optimal doping ratio for well-dispersed HfO2 in Si. Oxidation experiments on Si-xHfO(2) tablets confirmed that the thinnest thermally grown oxide was achieved with 20 vol% HfO2-doped Si.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Yuhang Tian, Shuangshuang Liu, Xu Zhang, Shikang Xiao, Jian Sun, Jingde Zhang, Guifang Han
Summary: By increasing the reaction temperature and adjusting the reaction process, bismuth oxide was successfully mixed uniformly with yttria-stabilized zirconia and reduced its sintering temperature. This has important implications for the application of solid oxide fuel cells.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Youssif Merhi, Pablo F. Betancur, Teresa S. Ripolles, Charlotte Suetta, Morten R. Brage-Andersen, Sofie K. Hansen, Anders Frydenlund, Jens Vinge Nygaard, Peter H. Mikkelsen, Pablo P. Boix, Shweta Agarwala
Summary: Muscle atrophy is a common problem caused by immobilization and critical illness, leading to rehabilitation difficulties and increased mortality. This study presents a solution for preserving muscle mass through the use of a customized biocompatible neuromuscular electrical stimulation (NMES) device. The integration of dry and biocompatible electrodes into a compressive stocking textile was demonstrated, resulting in extended usage without skin irritation. Electrochemical analysis showed improved performance of the printed electrodes compared to commercial ones, and promising results were obtained in a hospital setting for muscle atrophy evaluation.
Article
Materials Science, Ceramics
Zengjie Zhou, Guannan Li, Xin Gong, Yuming Lu, Jianfeng Tang, Sam Zhang
Summary: A novel Te-doped 0.7BiFe1_xTexO3-0.3BaTiO3 ceramics with enhanced ferroelectric properties were designed and synthesized. The introduction of Te reduced the Fe2+ concentration and improved the insulating performance. The Te-induced structure distortion resulted in a large remnant polarization and relaxed ferroelectric behavior.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Juanita Hidalgo, Yu An, Dariia Yehorova, Ruipeng Li, Joachim Breternitz, Carlo A. R. Perini, Armin Hoell, Pablo P. Boix, Susan Schorr, Joshua S. Kretchmer, Juan-Pablo Correa-Baena
Summary: Preferred crystallographic orientation in polycrystalline films is influenced by the solvent of the precursor solution and the organic A-site cation. Dimethylsulfoxide affects the early stages of crystallization and induces preferred orientation by preventing colloidal particle interactions, while methylammonium A-site cation leads to a higher degree of preferred orientation compared to formamidinium. Surface energy differences between different crystal facets explain the difference in preferred orientation. Different A-site cations impact ion density and accumulation, leading to increased hysteresis in bromine-based perovskite solar cells.
CHEMISTRY OF MATERIALS
(2023)
Review
Materials Science, Ceramics
Shikang Xiao, Jianzhang Li, Panxin Huang, Antong Zhang, Yuhang Tian, Xu Zhang, Jingde Zhang, Jungho Ryu, Guifang Han
Summary: This paper discusses the significant improvement of SiC-based ceramic matrix composites (CMCs) in high-temperature combustion chambers with the use of environmental barrier coatings (EBCs). Proper evaluation of the performance of designed EBC materials and/or structures is required before their actual applications in environments with physical ablation, high temperature, and chemical corrosion. The paper thoroughly reviews evaluation methods for basic and environmental properties of EBCs with newly proposed methods and improved techniques, providing pros and cons of each method and potential strategies/techniques.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Physical
Akun Liang, Robin Turnbull, Catalin Popescu, Ismael Fernandez-Guillen, Rafael Abargues, Pablo P. Boix, Daniel Errandonea
Summary: The crystal structure of CH3NH3PbBr3 perovskite under high-pressure conditions was studied using synchrotron-based powder X-ray diffraction. It was found that after the previously reported phase transitions, there is a third crystalline phase transition at 4.6 GPa, which contradicts previous studies. X-ray diffraction measurements confirmed that CH3NH3PbBr3 remained crystalline up to at least 7.6 GPa. The new high-pressure phase showed abrupt changes in unit-cell parameters and a 3% decrease in unit-cell volume.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Ceramics
Xu Zhang, Jingde Zhang, Yuhang Tian, Shikang Xiao, Jianzhang Li, Guifang Han
Summary: To lower the sintering shrinkage and avoid defects, slurries with high solid content and low viscosity are needed for ceramic components fabricated by vat photopolymerization technique. However, the viscosity of slurry increases dramatically with the increase of solid content, which affects the printing process and performance quality. A novel strategy of powder surface modification and dispersant selection was proposed to increase the solid load without significantly increasing viscosity.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Zhou Xu, Yifei Yuan, Qing Tang, Xiangkun Nie, Jianwei Li, Qing Sun, Naixuan Ci, Zhenjie Xi, Guifang Han, Lijie Ci, Guanghui Min
Summary: A multilayer reconstruction strategy is employed to suppress the evolution of lattice oxygen and structure transformation in layered lithium-rich manganese-based oxide (LRMO) through facile pyrolysis. The multilayer interface is visually observed using advanced electron microscopy techniques. The suppressed evolution of lattice oxygen during initial charging eliminates the variation in unit cell parameters and prevents lattice distortion during long cycling, leading to improved Coulombic efficiency, rate capacity, and long-term stability of the modified LRMO. This study provides a surface reconstruction strategy to suppress anionic redox and offers insights for material design in high-performance lithium-ion batteries.
Article
Green & Sustainable Science & Technology
Shweta Singh, Priyanka Kajal, Atul Dhar, Nripan Mathews, Pablo P. Boix, Satvasheel Powar
Summary: This study investigates the environmental performance of high temperature and low temperature processed carbon-based perovskite solar modules (CPSMs) and finds that both energy consumption and material selection have significant environmental impacts. High temperature processed CPSMs have a greater environmental impact compared to low temperature processed CPSMs.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Shuangshuang Liu, Jingde Zhang, Yuhang Tian, Jian Sun, Panxin Huang, Jianzhang Li, Guifang Han
Summary: Bi2O3 is a promising sintering additive for YSZ that can decrease its sintering temperature and increase its ionic conductivity. However, the growth of Bi2O3 into large-sized rods and its addition inducing phase instability and precipitation of monoclinic ZrO2 are unfavorable for the electrical property. A microemulsion method was introduced to control the morphology and size of Bi2O3. Spherical Bi2O3 nanoparticles were obtained and nanosized Bi2O3-YSZ composite powders with good mixing uniformity dramatically decreased the sintering temperature and increased the conductivity of YSZ electrolytes.
Article
Engineering, Manufacturing
Junbin Lu, Jie Jing, Xiaobin Zhou, Guifang Han, Zidong Zhang, Hongyu Gong, Xiyao Wang, Guantong Wang, Yalan Miao, Mingming Sheng, Maoyun Liu
Summary: The article introduces a new type of 3D printed metamaterials for the preparation of excellent electromagnetic absorbers. Through simulation, modeling, and experiments, absorbing ceramics with good performance were obtained.
ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Ceramics
Ajeet Kumar, Geon Lee, Atul Thakre, Deepak Rajaram Patil, Guifang Han, Jungho Ryu
Summary: This study successfully fabricated manganese-doped antiferroelectric thick films using aerosol deposition technique at room temperature, and demonstrated excellent energy storage and electrical properties. The films exhibited low leakage current, high breakdown strength and energy density, as well as good temperature stability and fatigue properties.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2023)
Article
Biochemical Research Methods
Jaume Noguer-Gomez, Pablo P. Box, Rafael Abargues
Summary: This article presents a protocol for the annealing-free and antisolvent-free synthesis of perovskite nanocrystals, providing detailed steps for preparing the precursor solutions and controlling processing parameters to achieve precise control over the nanocrystal size.
