Article
Materials Science, Ceramics
Amel Muhson Naji, Sahira Hassan Kareem, Abbas Hasan Faris, Mustafa K. A. Mohammed
Summary: In this study, the efficient strategy of utilizing polyaniline as an additive improved the quality and stability of the perovskite photoactive layer, resulting in optimized crystallinity and reduced trap density. The introduction of polyaniline enhanced the interfacial contact between materials, leading to higher efficiency and stability in the photovoltaic cells. This approach demonstrates the potential for enhanced performance and long-term stability in perovskite solar cells.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Z. Yang, J. Yang, H. Ji, M. He, Y. Song, W. Zhang, J. Yuan, X. She, Y. She, H. Li, H. Xu
Summary: The study focuses on the rational design and fabrication of Co-doped CuInS2 photocatalysts with S-Co-S internal electron transfer bridges for efficient CO2 photoreduction. The results demonstrate that the S-Co-S bonding bridge enhances the photocatalytic activity and suppresses the recombination of photoexcited charge pairs. Additionally, Co doping modulates the band configuration, leading to higher electron density and lower energy barrier for CO2 reduction.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Doowon Lee, Myoungsu Chae, Jong-Ryeol Kim, Hee-Dong Kim
Summary: This paper investigates the effects of aluminum oxide (Al2O3) antireflection coating (ARC) on silicon heterojunction (SHJ) solar cells. Comprehensive ARCs simulation with Al2O3/ITO/c-Si structure is conducted, demonstrating the feasibility of improving the short circuit current density (J(SC)). Al2O3 ARC is applied on SHJ solar cells based on simulation results, and an increase in J(SC) to 1.5 mA/cm(2) is observed with an Al2O3 layer thickness of 20 nm. The decrease in total reflectance due to constructive and destructive light interference is the reason behind this increase. Therefore, the proposed Al2O3 ARC is believed to support an effective engineering technique to enhance J(SC) and efficiency of SHJ solar cells.
Article
Nanoscience & Nanotechnology
Jin-Gyu Bae, Ju-Hyeon Lee, Min Sung Kim, Byung Gon Kim, Hyeon Jeong Lee, Ji Hoon Lee
Summary: A molten salt synthesis method was used to produce sphere-like single-crystal magnesium-doped LiCoO2. The lattice strain was effectively alleviated, and the phase transition was suppressed by both the particle shape and Mg doping. The preference for Mg doping in the Co site rather than the Li site in the LCO framework was systematically revealed.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Luhua Chen, Long Chen, Jian Chu, Shuai Yang, Zhongge Ma, Zhiyuan Jia, Jinhui Song
Summary: With the development of wearable electronics, the demand for high-performance photodetectors with smaller size, lower power consumption, and higher sensitivity has increased. Photodetectors based on one-dimensional zinc oxide nanowires have been intensively investigated, but they can only detect ultraviolet light. This paper reports a heterojunction photodetector based on ZnO/CuO/NiO core-shell-shell nanowires, which shows a fast response and a large sensitivity under UV irradiation. The results indicate that core-shell-shell heterojunction nanostructures can be used to develop high-performance photodetectors for UV-vis broadband photosensing applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Coatings & Films
Emmanuel Rocca, Sophie Jacques
Summary: A new surface treatment for zinc-coated products has been developed to prevent premature tarnishing in moist atmosphere or during wet-dry climatic cycles. The electrochemical behavior of pure zinc was studied under different pH and potential conditions, and coatings constituted by zinc heptanoate or zinc hydroxyheptanoate were synthesized and tested.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Qi Luo, Jian Yu, Xueshuang Deng, Ming Cao, Shifang Ma, Qiongxin Hua, Dan Xue, Fenghui An
Summary: This study aims to improve the efficiency of perovskite solar cells (PSCs) by using a spectral conversion film component with antireflection properties. By applying a specific nanorod/nanosphere-based thin film, the device efficiency is improved, and the light transmittance is optimized, resulting in enhanced photovoltaic performance.
Article
Materials Science, Ceramics
Zhen-Bo Wang, Ali Aldalbahi, Tansir Ahamad, Saad M. Alshehri, Peter X. Feng
Summary: The study introduced a method for preparing BiFeO3 using hydrothermal synthesis and achieving high purity products by controlling the cooling rate. Different cascade structures of TiO2 and BiFeO3 were prepared on FTO, and the photoelectric conversion efficiency was improved by dopant modification.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Galina M. Kuz'micheva, Liudmila I. Ivleva, Irina A. Kaurova, Vladimir A. Lazarenko, Evgeny V. Khramov
Summary: This paper presents the doping-induced structural changes of Co-activated calcium orthovanadate Ca-3(VO4)(2) (CVO) single crystals and the specific local behavior of cobalt ions depending on the dopant content. It is found that the number of Ca crystallographic sites occupied by cobalt ions gradually increases with increasing dopant concentration. Vacancies in the vanadium V2 site are detected for all samples, and additional vacancies in the V1 site are found for CVO:2.0Co. The analysis of X-ray diffraction and X-ray absorption spectroscopy results indicates that the formal charge of Co ions is mixed between 2+ and 3+ with a prevalence of 2+. The coordination number of Co(2+delta)+ ions is 4.6 and the polyhedron is intermediate between tetrahedral and octahedral.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ziyang Jia, Rui Ding, Wujiang Yu, Yi Li, Ailin Wang, Miao Liu, Feng Yang, Xiujuan Sun, Enhui Liu
Summary: This study explores a trimetallic perovskite fluoride material for advanced aqueous supercabatteries, showing superior performance due to the synergistic effect of pseudocapacitive, capacitive, and faradaic responses. Key findings include the bulk phase conversion mechanism of the material in alkaline media and the enhanced activity of redox-active species with the presence of redox-inert zinc species, as demonstrated by various ex-situ techniques. This research reveals the structure-activity relationship and charge storage mechanisms of zinc-doped perovskite materials, impacting the development of advanced electrochemical energy storage.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Liuxu Yu, Mingyuan Wang, Haigang Hou, Guiwu Liu, Xiangzhao Zhang
Summary: This study reports a porous A/B-site co-doped LaCrO3-based perovskite coating and investigates the effect of elemental doping on optical properties, revealing the enhancement mechanisms of optical absorption. Experimental and theoretical calculations show that appropriate Ca/Fe co-doping reduces the bandgap and increases the number of free carriers, leading to enhanced absorption in the visible and near-infrared regions and the 0.3-14 μm wavelength range. Among the coatings, La0.5Ca0.5Cr0.95Fe0.05O3 demonstrates optimal photothermal conversion performance under solar and infrared irradiations. This research provides a simple and convenient method for preparing high-performance photothermal coatings with potential applications in wide-spectrum energy conversion.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Li Xu, Suqin Wu, Daijie Deng, Can Wang, Junchao Qian, Guifen Lu, Henan Li
Summary: The study successfully enhanced the performance of oxygen reduction reaction and zinc-air batteries by synthesizing Fe, Co co-doped tungsten carbide/nitrogen-doped carbon catalyst.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Raghavendra Sagar, Asha Rao
Summary: This paper demonstrates that deposition of nanoscale TiO2 and Ta2O5 as antireflection coatings on commercial monocrystalline silicon solar cells can significantly enhance the photon to electron conversion efficiency, mainly attributed to the increase in fill factor.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Biomedical
Da-Wang Zhao, Chun-Miao Du, Kang-Qing Zuo, Yi-Xiang Zhao, Xiao-Qian Xu, Yi-Bo Li, Shuai Tian, Hong-Ru Yang, Yu-Peng Lu, Lei Cheng, Gui-Yong Xiao
Summary: Zinc alloys are a new generation material for orthopedic applications due to their physiological effects and degradation properties. However, excessive release of zinc ions during degradation and the inflammatory microenvironment hinder osseointegration. Therefore, it is crucial to modulate the release rate of zinc alloys and give them anti-inflammatory and osteogenic effects through surface modification technology.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ao Chen, Yaqin Zhang, Qing Li, Guojing Liang, Shuo Yang, Zhaodong Huang, Qi Yang, Hong Hu, Xinliang Li, Ze Chen, Jun Fan, Chunyi Zhi
Summary: The low-cost and high safety of zinc batteries have attracted attention, but the operating voltages are usually low. Hybrid batteries using H+ as the charge carrier can achieve high operating voltage and performance. However, it is difficult to prepare alkaline zinc-based hybrid batteries with high performance. The development of a unique phase-separation electrolyte (PSE) can boost the voltage and prevent zinc dendrite growth. Zinc/lithium hybrid batteries with LiMn2O4 cathodes show excellent cycle performance. A full cell with a high voltage and capacity is also achieved.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Physics, Applied
Amrit Kaphle, Parameswar Hari
JOURNAL OF APPLIED PHYSICS
(2017)
Article
Engineering, Electrical & Electronic
Amrit Kaphle, Mario F. Borunda, Parameswar Hari
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2018)
Article
Nanoscience & Nanotechnology
Amrit Kaphle, Travis Reed, Allen Apblett, Parameswar Hari
JOURNAL OF NANOMATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Amrit Kaphle, Elena Echeverria, David N. Mcllroy, Kenneth Roberts, Parameswar Hari
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2019)
Article
Energy & Fuels
Ganga R. Neupane, Amrit Kaphle, Parameswar Hari
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2019)
Article
Chemistry, Multidisciplinary
Ganga R. Neupane, Parameswar Hari
Article
Chemistry, Multidisciplinary
Rusiri Rathnasekara, Parameswar Hari
Summary: Silver-doped ZnO nanoparticles were synthesized using the microwave method, and their structural, optical, and electrochemical properties were characterized. Different preparation methods of platinum metal counter electrodes were compared for their performance. The counter electrode prepared by the electrochemical method showed the best current-voltage performance in the DSSCs.
Article
Chemistry, Multidisciplinary
Amrit Kaphle, Elena Echeverria, David N. Mcllroy, Parameswar Hari
Article
Nanoscience & Nanotechnology
Elena Echeverria, Amrit Kaphle, Aaron Austin, Lyndon Bastatas, Parameswar Hari, David McIlroy
ACS APPLIED NANO MATERIALS
(2019)