Article
Materials Science, Multidisciplinary
Saber Ghannadi, Hossein Abdizadeh, Amirhossein Rakhsha, Mohammad Reza Golobostanfard
Summary: The study validates the role of titania (TiO2) nanorod arrays (NRAs) synthesized via sol-electrophoretic deposition in enhancing the efficiency of dye-sensitized solar cells (DSSCs). Results show that NRAs can significantly increase the efficiency of DSSC.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Review
Chemistry, Multidisciplinary
Deepak Joshy, Soumya B. Narendranath, Yahya A. Ismail, Pradeepan Periyat
Summary: TiO2 nanomaterials have been widely studied as photoanode materials in dye-sensitized solar cells due to their non-toxicity, high electron transport rates, and fine tuneable band gap. This review focuses on the modification of TiO2 photoanodes through doping and morphological variations, and highlights the impact of various morphologies on photoanode design.
NANOSCALE ADVANCES
(2022)
Article
Engineering, Electrical & Electronic
V. Gowthambabu, Mrunal Deshpande, R. Govindaraj, V. K. Nithesh Krishna, M. Leela Charumathi, J. Manish Kumar, M. S. Dhilip Vignesh, R. Isaac Daniel, P. Ramasamy
Summary: This study synthesized highly phase pure anatase TiO2 microspheres using a low-cost hydrothermal route, characterized them using various analysis methods, and fabricated dye-sensitized solar cells. The results showed that the DSSC composed of prepared TiO2 microspheres exhibited a higher power conversion efficiency compared to commercial P25.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Muhammad Saleem, Ali Algahtani, Saif Ur Rehman, Muhammad Sufyan Javed, Kashif Irshad, Hafiz Muhammad Ali, Muhammad Zeeshan Malik, Amjad Ali, Vineet Tirth, Saiful Islam
Summary: The doping of Cu and Sm in ZnO nanorod arrays can enhance their structural, optical, and photovoltaic properties, leading to improved efficiency of dye-sensitized solar cells. The diameter of the nanorods is dependent on the concentration of Cu and Sm, while the density of the nanorod arrays remains relatively constant.
Article
Engineering, Electrical & Electronic
Varishetty Madhu Mohan, Kenji Murakam, Madhavi Jonnalagadda, V. R. Machavaram
Summary: Pure TiO2 and surface-modified TiO2 films were developed using spray pyrolysis technique, with similar crystal structure and optical absorption properties. However, the addition of ZnO layer in SMT films increased impedance and hindered reverse electron transmission. Thus, the efficiency of DSSCs improved from 8.25% to 9.3%.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Kang-Hun Lee, Seung-Hee Han, Ana Chuquer, Hwa-Young Yang, Jaehi Kim, Xuan-Hung Pham, Won-Ju Yun, Bong-Hyun Jun, Won-Yeop Rho
Summary: This study investigates the change in power conversion efficiency (PCE) of DSSCs by introducing Au nanoparticles (Au NPs) and a scattering layer. It was found that Au NPs enhance electron generation and the scattering layer improves light harvesting, resulting in a significant increase in the PCE of DSSCs. synergistically, the combination of Au NPs and a scattering layer shows promising potential for enhancing electron generation and light harvesting abilities in DSSCs.
Article
Chemistry, Multidisciplinary
S. Athithya, S. Harish, H. Ikeda, M. Navaneethan, J. Archana
Summary: In this study, a new scheme consisting of ZnO nanospindles decorated on TiO2 mesospheres as a stable photoanode was reported, and the kinetics of photon-induced charge carrier migration/transfer were explored. Different proportions of ZnO spindles decorated on mesosphere TiO2 were synthesized and used as photoanodes in DSSCs. The DSSC device with the TZC-0.05 photoanode showed excellent photovoltaic performance and long-term stability, with the best response exhibited at 35 degrees Celsius.
Article
Environmental Sciences
Muhammad Umair Shahid, Norani Muti Mohamed, Ali Samer Muhsan, Siti Nur Azella Zaine, Mehboob Khatani, Asfand Yar, Waqar Ahmad, Muhammad Babar Hussain, Asma A. Alothman, Mohammed Sheikh Saleh Mushab
Summary: Dye-sensitized solar cells (DSSCs) have attracted attention for their low-cost processing, ability to work in diffuse light, and potential for building integrated photovoltaics (BIPV). However, their efficiency is low due to multiple issues. This study introduces a graphene/TiO2 scattering layer that enhances electron transport and light scattering. Results show that with 0.01 wt% graphene, a 33% higher photoconversion efficiency (PCE) was achieved compared to without scattering layer. However, PCE decreases at >0.01 wt% graphene due to loss of diffuse reflectance and higher optical absorption.
Article
Materials Science, Multidisciplinary
Khaled HamdaninAff, Samia BelhoussenAff, Fatma Zohra TighiltnAff, Kahina LasminAff, Denis ChaumontnAff, Sabrina Sam
Summary: This study investigates the influence of TiO2 morphology on the performance of dye-sensitized solar cells. It is found that a proper content of nanotubes effectively connects with nanoparticles, facilitating charge transport.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Chun-Hao Chang, Chia-Han Chuang, De-Yang Zhong, Jun-Cheng Lin, Chia-Chi Sung, Chun-Yao Hsu
Summary: This study focused on enhancing the optoelectronic performances of dye sensitized solar cells (DSSC) by mixing acetylacetone, graphene powder and TiO2 mesoporous. The addition of graphene and optimization of parameters led to improvements in efficiency and performance of DSSCs. Using a different substrate material also resulted in increased photovoltaic efficiency.
Article
Chemistry, Physical
M. Kandasamy, M. Selvaraj, C. Kumarappan, S. Murugesan
Summary: In this study, ethylenediamine functionalized titanium dioxide nanowires graphene oxide/silver nanoparticle plasmonic nanocomposites were synthesized and utilized as photoanodes in dye-sensitized solar cells. The results showed that the prepared nanocomposites exhibited strong light harvesting and improved dye loading, resulting in high conversion efficiency of solar energy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Tian-Chiuan Wu, Wei-Ming Huang, Teen-Hang Meen, Jenn-Kai Tsai
Summary: A simple and low-cost fabrication method of DSSCs was developed to improve the structure and performance of the photoanode. Four different TiO2 layers were adopted to fabricate photoanodes, and the use of a pressed TiO2 layer resulted in the highest power conversion efficiency.
Article
Materials Science, Multidisciplinary
Bandana Ranamagar, Isaac Abiye, Fasil Abebe
Summary: The Rhodamine-6G derivative Rhd and its metal complexes with aluminum and chromium ions were synthesized and characterized using UV-vis and fluorescence spectroscopy. Dye-sensitized solar cells (DSSCs) were fabricated with Rhd and the metal complexes, and their solar-to-electric power efficiencies were determined through current-density measurements and Electrochemical Impedance Spectroscopy (EIS). The Rhd and Cr3+-sensitized solar cell showed the highest solar to electric power efficiency at 0.16%.
Article
Energy & Fuels
Deeksha Kharkwal, Nidhi Sharma, Saral Kumar Gupta, Chandra Mohan Singh Negi
Summary: The study found that using a co-sensitized dye as a photosensitizer can increase the power conversion efficiency of dye-sensitized solar cells, mainly due to the significant increase in open-circuit voltage and reduction in charge recombination. Impedance spectroscopy analysis showed that co-sensitized dye-based DSSC has higher charge recombination resistance and longer carrier lifetime.
Article
Chemistry, Multidisciplinary
Duofa Wang, Haizheng Tao, Xiujian Zhao, Tianjin Zhang, Junbo Han
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2016)
Article
Electrochemistry
Zhangkai He, Jing Li, Duofa Wang, Jinzhao Wang, Tianjin Zhang
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2017)
Article
Chemistry, Physical
Weihai Zhang, Juan Xiong, Sheng Wang, Wei-Er Liu, Jun Li, Duofa Wang, Haoshuang Gu, Xianbao Wang, Jinhua Li
JOURNAL OF POWER SOURCES
(2017)
Article
Chemistry, Multidisciplinary
Jing Li, Huijie Zhang, Song Wang, Debing Long, Mingkai Li, Yizhong Guo, Zhicheng Zhong, Kaifeng Wu, Duofa Wang, Tianjin Zhang
Article
Electrochemistry
Huijie Zhang, Jing Li, Zhen Huang, Wenkang Wang, Jinhua Li, Duofa Wang, Tianjin Zhang
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Yaping Sun, Huiying Chen, Tianjin Zhang, Duofa Wang
JOURNAL OF MATERIALS SCIENCE
(2018)
Article
Chemistry, Physical
Zhen Huang, Duofa Wang, Song Wang, Tianjin Zhang
Article
Chemistry, Physical
Jing Li, Huijie Zhang, Song Wang, Debing Long, Mingkai Li, Duofa Wang, Tianjin Zhang
Article
Chemistry, Multidisciplinary
Wenkang Wang, Duofa Wang, Fan Fang, Song Wang, Guohua Xu, Tianjin Zhang
CRYSTAL GROWTH & DESIGN
(2018)
Article
Chemistry, Multidisciplinary
Wenkang Wang, Yuanchuang Wu, Duofa Wang, Tianjin Zhang
Article
Chemistry, Physical
Chong Liu, Miao Wu, Yuanchuang Wu, Duofa Wang, Tianjin Zhang
JOURNAL OF POWER SOURCES
(2020)
Article
Energy & Fuels
Chong Liu, Jiajun He, Miao Wu, Yuanchuang Wu, Pengcheng Du, Limin Fan, Qin Zhang, Duofa Wang, Tianjin Zhang
Article
Chemistry, Physical
Yuanchuang Wu, Qin Zhang, Limin Fan, Chong Liu, Miao Wu, Duofa Wang, Tianjin Zhang
Summary: The presence of defects on the surface of CsPbI2Br perovskite films can lead to inferior power conversion efficiency of solar cells. By coating phenylethylammonium iodide (PEAI) solution onto the surface and annealing, the defect density on the surface can be effectively reduced. In situ characterization shows that the PEAI treatment induces surface crystal reconstruction and decreases trap density, leading to a high power conversion efficiency of 13.38% for the CsPbI2Br perovskite solar cell with a carbon electrode.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Jing Yang, Chuwu Xing, Qinhui Bao, Le Zhang, Shuai Huang, Duofa Wang, Tianjin Zhang
Summary: This study presents an interface engineering that reinforces the operation stability of FACsPbI(3) perovskite solar cells (PSCs) by introducing a multifunctional ligand CEPPA modification layer. CEPPA passivates oxygen vacancy defects and reduces defect states on SnO2 films. Additionally, optimized energy level arrangement leads to better electron extraction and transport. The power conversion efficiency (PCE) of the FACsPbI(3) device increases from 16.33% to 17.78% and the CEPPA-modified SnO2 shows better phase and moisture stability.
Article
Chemistry, Multidisciplinary
Miao He, Xinyu Xu, Le Zhang, Fei Lu, Chuwu Xing, Duofa Wang, Tianjin Zhang
Summary: Perovskite solar cells have shown significant improvements in power conversion efficiency, with even higher efficiencies possible. This study examines the impact of introducing the organic molecule dibenzo-18-crown-6 (DC) to CsPbI2Br perovskite precursor solution on the phase, morphology, and optical properties of perovskite films. Experimental results reveal that the efficiency of the photovoltaic device gradually increases with the increase of DC concentration, reaching its highest efficiency of 11.57% at a concentration of 0.3%. The presence of DC molecules effectively controls the perovskite crystallization process.
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
