Article
Chemistry, Physical
Siao-Ting Hong, Lu-Yin Lin
Summary: The study focuses on enhancing the photovoltaic performance of FDSC by fabricating a novel TiO2 microcone/TiO2 peanut structure (TMC/PN) as the photoanode and optimizing the hydrothermal process and TiO2 precursor concentration. The optimized FDSC achieved the highest open-circuit voltage, photocurrent density, and photo-to-electricity conversion efficiency by using 4 hours of hydrothermal process with 4 ml TTIP.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Pawel Gnida, Pawel Jarka, Pavel Chulkin, Aleksandra Drygala, Marcin Libera, Tomasz Tanski, Ewa Schab-Balcerzak
Summary: The impact of various TiO2 nanostructures on the properties of photoanodes and the photovoltaic parameters of dye-sensitized solar cells was investigated. It was found that the addition of nanotubes to the photoanode resulted in the highest UV-Vis absorption, indicating a higher number of sensitizer molecules anchored to the titanium dioxide. This led to the highest power conversion efficiency in the solar cells containing nanotubes and a mixture of dyes with a co-adsorbent.
Article
Energy & Fuels
H. Renuka, Ashutosh Garudapalli, T. S. Akhil Raman, B. Harihara Venkataraman, Kannan Ramaswamy, K. C. James Raju, Sanket Goel, Souvik Kundu
Summary: The study explores the use of transparent photovoltaic cells to replace windows and facades in conventional buildings for solar energy generation, with Ti-doped BiFeO3 material showing promising results in improving efficiency. By connecting two 1 x 1 cm PV unit cells in series, a significant amount of photogenerated voltage can be obtained for emerging electronic applications.
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
Engineering, Electrical & Electronic
Tse-Wen Huang, Lu-Yin Lin, Siao-Ting Hong
Summary: This study presents a novel approach to fabricate TiO2 nanoparticle-decorated TiO2 microcone array (TMC) with holes as the semiconductor on the photoanode of FDSC using a simple two-step process. By optimizing with 30 mM H2SO4, the FDSC achieved an efficiency of 2.52% and a collection efficiency of 92.21%, outperforming the FDSC with a pure TMC photoanode.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Review
Chemistry, Inorganic & Nuclear
Anees A. Ansari, M. K. Nazeeruddin, Mohammad Mahdi Tavakoli
Summary: The article discusses the application of UCNPs in DSSCs, including energy transfer, morphology, crystal structure, coupling, and ways to increase photovoltaic current. The factors influencing emission efficiency and photovoltaic current are also explained. Additionally, it is proposed that UCNPs and their surface functionalities significantly enhance photovoltaic current, offering a beneficial guide for the use of lanthanide-doped UCNPs in material synthesis and optoelectronic system construction.
COORDINATION CHEMISTRY REVIEWS
(2021)
Review
Engineering, Electrical & Electronic
Navdeep Kaur, Davinder Paul Singh, Aman Mahajan
Summary: This review provides a sequential guideline to enhance the power conversion efficiency (PCE) and stability of plasmonic dye-sensitized solar cells (DSSCs) using various methods of incorporation, with a focus on the ion implantation technique for metal nanoparticles.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
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
Chemistry, Applied
D. N. David Ndaleh, Dinesh Nugegoda, Jonathon Watson, Hammad Cheema, Jared H. Delcamp
Summary: The study examines the use of four high photocurrent NIR-absorbing metal-free organic sensitizers with varying nitrogen-based donor groups in dye-sensitized solar cell devices. By comparing the performance of dyes with different donor groups, the researchers found that balancing donor size and dye loadings is critical for achieving higher performances in DSC dyes, particularly in accessing low energy photons near 900 nm.
Article
Chemistry, Multidisciplinary
Dongting Wang, Yifan Hu, Yuchen Li, Xiangchen Jia, Yuzhen Fang, Zhiliang Zhang, Xianxi Zhang
Summary: The study introduces a novel and uncomplicated wet-chemical method at room temperature for the self seeding preparation of three-dimensional hierarchically branched rutile TiO2 nanostructures. The technique utilizes titanate nanotubes as the precursor and employs a dissolution/precipitation/recrystallization process to obtain spindle-like rutile TiO2 and intermediate anatase phase, which serve as the substrates and nucleation precursor to grow the branches, resulting in the formation of 3D hierarchically branched rutile TiO2. When used as the photoanode in dye-sensitized solar cells, the hierarchical TiO2 exhibits a significantly improved power conversion efficiency of 8.32%, surpassing a typical TiO2 (P25) nanoparticle-based reference cell (eta = 5.97%) with the same film thickness. The exceptional performance is attributed to the effective combination of robust light scattering, substantial dye loading, and fast electron transport in the hierarchically branched rutile TiO2 nanostructures.
Review
Chemistry, Applied
Mozhgan Hosseinnezhad, Zahra Ranjbar
Summary: The paper introduces flexible dye-sensitized solar cells (FDSSCs). In the third-generation solar cells, glass was used as a substrate, but it was not possible to produce continuously due to its weight and fragility. Flexible substrates are used in flexible solar cells as a new technology, and choosing a suitable substrate is crucial for producing photovoltaic devices with optimal efficiency.
PIGMENT & RESIN TECHNOLOGY
(2023)
Article
Energy & Fuels
Abdullah Atilgan, Abdullah Yildiz
Summary: The development of novel bilayer photoanodes is crucial for efficient dye-sensitized solar cells. In this study, a homojunction photoanode consisting of undoped and Ni-doped TiO2 layers was prepared. By tuning the location of the doped layer, the photoconversion efficiency was greatly improved. The bilayer structure enhanced light absorption, resulting in increased short circuit current and open-circuit voltage.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Guangming Cao, Xinwei Wang, Jundie Hu, Jiafu Qu, Wei Sun, Chang Ming Li, Xiaogang Yang
Summary: Artificial photosynthesis relies on the photoreactions between chemical molecules and photogenerated charges. In this study, it was found that using anatase TiO2 nanotubes array instead of dense TiO2 films can significantly increase the photocurrent. The surface charge reaction rate and accumulated charge densities were analyzed using transient surface photovoltage and transient photocurrent techniques.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Emmanuel O. Onah, M. A. Onuorah, S. U. Offiah, Raphael M. Obodo, O. Ekechukwu, P. E. Ugwuoke, Fabian Ezema
Summary: Ixora coccinea flowers were used as a natural dye source to fabricate DSSCs with TiO2 electrodes, which were annealed at various temperatures. The experimental results showed that the annealing temperature had an impact on the conversion efficiency of DSSCs.
JOURNAL OF NANOPARTICLE RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Tianju Fan, Lingfeng Jian, Xinwen Huang, Shiyang Zhang, Imran Murtaza, Rehan Abid, Yidong Liu, Yonggang Min
Summary: Graphene quantum dot nanorods have been prepared as a novel carbon-based material and used to fabricate efficient photoelectrodes for dye-sensitized solar cells. The incorporation of graphene quantum dot nanorods and controllable sizes of graphene quantum dots enhances the performance of dye-sensitized solar cells and reduces cost and environmental impact.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Environmental Sciences
Eun-Bi Kim, M. Imran, Eun-Hee Lee, M. Shaheer Akhtar, Sadia Ameen
Summary: This work focuses on the preparation of efficient nanomaterials framework using ZnO nanoglobules with graphene oxide and reduced graphene oxide for rapid multiple ion field-effect transistor sensors. The fabricated sensors showed excellent responses and sensitivities towards Cr (III) and Cu (II) ions, with remarkable dynamic linear detection capabilities and low limit of detection values. The platform demonstrated extraordinary reproducibility and stability in sensing performance, indicating promising potential for water maintaining systems.
Article
Energy & Fuels
Abdullah, Eun-Bi Kim, M. Shaheer Akhtar, Sadia Ameen
Summary: A new asymmetrically designed organic chromophore with improved optoelectronic properties was synthesized in this study. When used as an electron donor material in bulk heterojunction organic solar cells, the chromophore showed high power conversion efficiency when a compact titanium oxide buffer layer was used. Interestingly, the devices with the buffer layer demonstrated good stability even after 30 days.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Houcine Naim, Deb Kumar Shah, Abed Bouadi, Masoom Raza Siddiqui, M. Shaheer Akhtar, Chong Yeal Kim
Summary: The study presents a single heterojunction solar cell based on silicon and zinc oxide to improve power conversion efficiency. By utilizing PC1D simulation, the optimum photovoltaic parameters were determined to achieve the highest efficiency for the HJ-based c-Si solar cell.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jitendra Kumar Sharma, Meera Yadav, Anindita Hazarika, Hardeo Singh Yadav, Nene Takio, Sadia Ameen, Pratibha Srivastava, M. Shaheer Akhtar
Summary: This paper describes the green synthesis of well-crystalline CeO2 nanoparticles using lemon leaf extract, which efficiently act as a substitute for catalase in catalyzing various enzymatic reactions. The CeO2 nanoparticles exhibited similar activity and catalytic properties to traditional catalase, with the potential for degrading H2O2 and oxidizing toxic compounds.
EMERGENT MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Deb Kumar Shah, K. C. Devendra, Jaeho Choi, Seong Hwan Kang, M. Shaheer Akhtar, Chong Yeal Kim, O-Bong Yang
Summary: This study optimizes the thickness of graphene oxide (GO) as an antireflection coating (ARC) layer using a low-cost deposition process and validates the results through experiments and simulations. The optimized GO ARC layer with a thickness of 80 nm exhibits the lowest reflectance and the highest photovoltaic performance in Si solar cells.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Jay Singh, Kichang Hong, Younggwon Cho, M. Shaheer Akhtar, Jungwon Kang, Alok Kumar Rai
Summary: This article investigates the hydrothermal synthesis of oval-shaped V2O5 nanoparticles using a metal-organic framework (MOF) as a template. The characterized sample reveals that the unique morphology of the nanoparticles, with a large surface area and numerous channels for lithiation and de-lithiation, leads to improved electrochemical performances. The V2O5 electrodes show promising potential as cathode materials for next-generation lithium-ion batteries.
Article
Energy & Fuels
Jumaboev Sherozbek, Jaewoo Park, Mohammad Shaheer Akhtar, O-Bong Yang
Summary: Solar power generation is impacted by meteorological factors, and accurately predicting power generation is important for integrating solar energy into the electrical grid. This study used smart artificial intelligence models to forecast power generation for non-transparent and transparent solar panels. Deep learning approaches such as LSTM, GRU, and transformers were implemented, with the transformers model showing the best performance. The proposed model demonstrated efficient and effective forecasting of time-series data.
Article
Environmental Sciences
M. Imran, Eun-Bi Kim, Abdullah, M. Shaheer Akhtar, Ahmad Umar, Dong-Heui Kwak, Sadia Ameen, Sotirios Baskoutas
Summary: The study focuses on the synthesis of an organic semiconductor with extended π-conjugation for the use of photocatalysis in acquiring photon energy from sunlight to clean the environment, particularly for the purification of contaminants from water.
ENVIRONMENTAL RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Abdullah, Sei-Jin Lee, Jong Bae Park, Yang Soo Kim, Hyung-Shik Shin, Ashique Kotta, Qamar Tabrez Siddiqui, Youn-Sik Lee, Hyung-Kee Seo
Summary: A linear-shaped small organic molecule, MBTR, synthesized and analyzed, efficiently tuned the thermal, absorption, and emission characteristics to enhance the molecular packing and aggregation behaviors in the solid state. The optimized MBTR:PC71BM fullerene-based devices showed a maximum PCE of 7.05%, and with the addition of 3% DIO, the PCE improved to 8.76%, demonstrating the effective approach of introducing suitable donor/acceptor groups in enhancing the photovoltaic performances of organic solar cells.
Article
Chemistry, Analytical
Ahmad Umar, Mazharul Haque, Shafeeque G. G. Ansari, Hyung-Kee Seo, Ahmed A. A. Ibrahim, Mohsen A. M. Alhamami, Hassan Algadi, Zubaida A. A. Ansari
Summary: In this study, label-free myoglobin detection for identifying acute myocardial infarction was successfully achieved using Cu-TiO2 nanostructures as the base matrix. The Cu-TiO2 nanomaterials exhibited good crystallinity and high purity, and the fabricated Mb biosensor showed high sensitivity and low detection limit.
Article
Biochemistry & Molecular Biology
Md. Torikul Islam, Md. Nahid Parvez Roni, Md. Yunus Ali, Md. Robiul Islam, Md. Shamim Hossan, M. Habibur Rahman, A. A. S. Mostofa Zahid, Md. Nur E. Alam, Md. Abu Hanif, M. Shaheer Akhtar
Summary: This study found that titanium dioxide nanoparticles, prepared through sol-gel and hydrothermal synthetic routes, have specific degradation preferences for charged substrates. It indicates the potential for the selective degradation of specific organic pollutants, facilitating cost-effective effluent management.
Article
Optics
Tri-Chan-Hung Nguyen, Young-Un Kim, Insung Jung, O-Bong Yang, Mohammad Shaheer Akhtar
Summary: This research proposes the use of machine learning to accurately predict the properties of new inorganic perovskite materials, providing guidance for the discovery of desirable organic perovskite materials. The best experimental outcomes were achieved using the Random Forest algorithm, demonstrating the potential of machine learning in accelerating material discovery.
Article
Nanoscience & Nanotechnology
Tae-Guan Kim, Dadajon Jurakuziev, M. Shaheer Akhtar, O-Bong Yang
Summary: This study establishes a relationship between photoluminescence and crystalline properties of inorganic phosphors, and optimizes their optical and photophysical behavior by controlling the Ba/Sr ratio. The findings suggest that machine learning prediction models can serve as excellent preliminary investigations to guide the research of novel inorganic phosphors.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2023)
Article
Materials Science, Multidisciplinary
Ahmad Umar, Rajesh Kumar, Ahmed A. Ibrahim, Mohsen A. M. Alhamami, M. Shaheer Akhtar
Summary: CdS QDs-rGO composites can serve as reliable electron facilitators for the fabrication of sensitive, robust, and persistent electrochemical sensors.
MRS COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Deb Kumar Shah, K. C. Devendra, Ahmad Umar, Hassan Algadi, Mohammad Shaheer Akhtar, O-Bong Yang
Summary: This paper investigates the thickness optimization of HfO2 ARC layer on silicon solar cells and explores its impact on the photovoltaic characteristics through simulation analysis. The experimental results show that the HfO2 ARC layer with a thickness of 70 nm achieves lower reflectance and enables the silicon solar cells to have exceptional quantum efficiency and power conversion efficiency.
Article
Chemistry, Multidisciplinary
Abu Talha Aqueel Ahmed, Sankar Sekar, Shubhangi S. Khadtare, Nurul Taufiqu Rochman, Bathula Chinna, Abu Saad Ansari
Summary: In this study, MnCo2S4 nanosheet catalyst was successfully synthesized and found to exhibit superior performance in hydrogen evolution. Compared to MnCo2S4, MnCo2S4 showed low overpotentials, moderate Tafel slope, and excellent sustainability. The outstanding performance can be attributed to the increased number of electrochemically active sites and enhanced electronic conductivity on the catalyst surface.
Article
Chemistry, Multidisciplinary
Victor V. Maltsev, Elena A. Volkova, Elizaveta V. Koporulina, Diana D. Mitina, Vladimir L. Kosorukov, Anna I. Jiliaeva, Daniil A. Naprasnikov, Konstantin N. Gorbachenya, Viktor E. Kisel
Summary: The phase relationships, crystal properties and luminescence kinetics of two complex systems were studied, including unit cell parameters, segregation coefficients of impurities, and lifetimes of energy levels.
Article
Chemistry, Multidisciplinary
Xiaoman Zhang, Wangwang Xu, W. J. Meng, Andrew C. Meng
Summary: This study successfully grew high-quality single crystal AlScN nanowires through ultra-high vacuum reactive sputtering technique and characterized their structure and properties. The nanowires exhibit significantly reduced mosaic spread and predominantly single ferroelectric domains, as well as a high piezoelectric constant.
Article
Chemistry, Multidisciplinary
Tom E. de Vries, Elias Vlieg, Rene de Gelder
Summary: Networks are important for describing relationships between people, roads between cities, reactions between chemicals, and other interactions. Bipartiteness, dividing the network into two groups, can facilitate the study of the network's structure. We have developed an algorithm that can find a near-optimal bipartisation within a reasonable time frame and used it to uncover the hidden structure of the CSD cocrystal network.
Article
Chemistry, Multidisciplinary
Chuchu Han, Jing Yang, Xin Zhang, Aisen Li, Jiang Peng
Summary: An elastic crystal based on a photo-reactive acylhydrazone derivative is reported, which exhibits reversible bending behavior under UV irradiation and heating. The crystal undergoes reversible E<->Z isomerization under light and heating conditions. The crystal demonstrates excellent elastic properties and the bending can be controlled to control the output direction of red light.
Article
Chemistry, Multidisciplinary
Lingfeng Zhang, Yu Wang, Yefeng Wang, Shuai Liu, Na Zhang, Mingmin Yang, Haixia Ma, Zhaoqi Guo
Summary: This study designs and synthesizes a series of high-energy salts compounds without heavy metal ions and azide groups. The molecular structures and stability of the compounds are confirmed through single-crystal X-ray diffraction and intermolecular interaction analysis. Furthermore, the thermal stability, energetic properties, and electrical initiation properties of the compounds are investigated, suggesting their potential as primary explosives.
