Article
Engineering, Electrical & Electronic
Toka Hatem, Maryam G. Elmahgary, Rami Ghannam, Mohamed A. Ahmed, Sameh O. Abdellatif
Summary: Dye-sensitized solar cells have great potential in low-cost and self-powered nano/micro-scale applications due to their advantages such as low fabrication costs and lead-free structure. This study attempts to boost the conversion efficiency by narrowing the energy band gap of the active layer. The fabricated cell shows promising results with an overall harvested power density of 8.6 mW/cm(2) for various low-power sensing applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Analytical
Jianjun Yang, Xiaobao Yu, Yaxin Li, Guilin Cheng, Zichuan Yi, Zhi Zhang, Feng Chi, Liming Liu
Summary: This paper proposes a new type of flexible dye-sensitized solar cell (DSSC) structure with all-metal electrodes without the use of rare elements. The preparation techniques for the light-receiving layer and porous titanium dioxide (TiO2) film are analyzed. Experimental results show that different electrode material combinations can achieve different performance indicators.
Article
Materials Science, Ceramics
Yi Di, Tianshi Qin
Summary: In this study, dispersed Ni species over the surface of plasmonic TiN nanocrystals (TiN@Ni) were manufactured using a wetness impregnation method. The bifunctional TiN@Ni nanocrystals combined with monolayer MXene to form a continuous conductive matrix, serving as a counter electrode for dye-sensitized solar cells (DSSC), resulting in enhanced electrocatalytic performance and power conversion efficiency.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Mohamed Bashir Ali Bashir, Altaf Hussain Rajpar, Ethar Yahya Salih, Emad M. Ahmed
Summary: In this study, dye-sensitized solar cells (DSSCs) based on mesoporous CuO@Zn(Al)O-mixed metal oxides (MMO) were fabricated at different post-processing temperatures. The CuO@Zn(Al)O structure was obtained by using Zn/Al-layered double hydroxide (LDH) as a precursor. The dye loading amount onto the deposited materials was analyzed using a regression equation-based UV-Vis technique, showing a strong correlation with the power conversion efficiency of the DSSCs. Among the assembled DSSCs, CuO@MMO-550 exhibited significant fill factor and power conversion efficiency due to its high surface area and considerable dye loading amount.
Article
Chemistry, Physical
V. Gayathri, E. Praveen, K. Jayakumar, S. Karazhanov, C. Raja Mohan
Summary: In this study, the performance of Graphene Quantum Dot (GQD) and MWCNT embedded Copper Cobalt Sulfide (CCS) composites for energy conversion and storage was investigated. The synthesized composites were characterized to determine their crystalline nature, shape, and chemical content. Electrochemical analysis showed that the GQD embedded CCS/MWCNT composite exhibited significant electrochemical activity and electrical conductivity. The power conversion efficiency of the composites was determined, with the CCS/MWCNT/GQD composite having the highest efficiency. The composite with GQD had the maximum effective specific capacity and retained 70% capacitance after 1200 charge-discharge cycles. Thus, the GQD-supported CCS microstructure is a suitable electrode material for integrated energy conversion and storage devices.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Energy & Fuels
Muhammad Younas, Mohammed Ashraf Gondal, Mohamed A. Dastageer, Aasif Hilal
Summary: In this study, a layer of cobalt-metallic-ion-coordinated metal-organic framework (Co-MOF199) is deposited on the photoanode of conventional dye-sensitized solar cell (DSSC), resulting in increased electron recombination lifetime and resistance, leading to improved open-circuit voltage and power conversion efficiency.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Physics, Applied
Kao-Wei Min, Shi-Mian Chao, Ming-Ta Yu, Chi-Ting Ho, Pin-Ru Chen, Tung-Lung Wu
Summary: The study demonstrated that doping TiO2 scattering layers with graphene can effectively enhance visible light absorption and increase current density in DSSCs, showing potential for improving the photoelectric conversion efficiency.
MODERN PHYSICS LETTERS B
(2021)
Article
Materials Science, Multidisciplinary
Geetam Richhariya, Anil Kumar
Summary: The study utilized a combination of two synthetic organic dyes, eosin Y and bromophenol, for dye-sensitized solar cells (DSSCs) and confirmed the properties and purity of the materials through various analysis methods. The results showed that the use of mixed dye significantly enhanced the power conversion efficiency of the photovoltaic cells.
Article
Chemistry, Physical
Jae-hun Bae, Hwang-Ju Jeon, Sung-Ho Cho, Yong-beom Cho, Sung-Eun Lee, Tae-Oh Kim
Summary: In this study, a dye-sensitized solar cell (DSSC) doped with Cu, Co was fabricated by simultaneously sonicating TiO2 and a trace amount of a transition metal precursor. The cavitation bubbles occurred during sonication resulted in defects on the surface of the TiO2 particles. The maximum energy-conversion efficiency of the DSSCs fabricated by TiO2 which doped with Cu and Co by ultrasonic treatment was 4.16%, and that of the DSSCs fabricated with TiO2 not doped with a transition metal was measured at 2.93%. Doping TiO2 with a transition metal using ultrasonic treatment contributed to the improvement of the performance of the TiO2 photoelectrode.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Chundan Lin, Yanbing Liu, Di Shao, Guochen Wang, Huiying Xu, Changjin Shao, Wansong Zhang, Zhenqing Yang
Summary: A series of double donor organic dyes, ME101-ME106, designed in this work based on experimentally synthesized dye WD8, show higher stability and electron performance than the single donor dye. Among them, ME106 exhibits potential application value with a smaller energy gap and significant redshift compared to WD8. Results suggest that double donor dyes have stronger electron transfer capability, offering new insights for the design of high efficiency dye-sensitized devices.
Article
Energy & Fuels
Sabine Josten, Tillmann Koehler, Frank Marlow
Summary: Light-weight dye-sensitized solar cells were successfully fabricated on stainless steel meshes made of different materials, showing a voltage shift and hysteresis in the J-V characteristics. A large capacitance of 171 mu F/cm2 was found to describe this effect, with only small differences identified between the stainless steel types used for the mesh.
Article
Environmental Sciences
Peerzada Ajaz Ahmad, Feroz Ahmad Mir
Summary: This study focuses on the performance analysis of a titanium dioxide semiconductor-based dye-sensitized solar cell (DSSC). The characteristics of the dye, including optical band gap and emission, were investigated using various spectroscopy techniques. The energy levels of the sensitizer were estimated through cyclic voltammograms. The study found that the dye performed well in terms of short circuit current density and power conversion efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Applied
Nuray Arslan, Seyma Nur Yildirir, Altug Mert Sevim, Soner Cakar, Mahmut Ozacar, Ahmet Gul
Summary: Effective non-symmetrical push-pull oxotitanium phthalocyanine dyes and YD2 porphyrin-based sensitizer cocktail are designed, synthesized, and utilized in dye-sensitized solar cells. The phthalocyanine dyes and TiO2 nanoparticles are characterized, and the solar cells are prepared and characterized. The results show that the synthesized solar cells have higher conversion efficiency than the standard dye.
Article
Materials Science, Multidisciplinary
T. C. Sabari Girisun, M. Durairaj, S. Vijaya, S. Anandan
Summary: Thin films of mixed-phase 1T and 2H MoS2 on FTO substrate were prepared using hydrothermal technique, and the morphology and bandgap of the films could be controlled by altering reaction time. The MoS2-36 electrode exhibited higher photoconversion efficiency in DSSCs compared to Pt-based DSSCs.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Energy & Fuels
Ahalya Gunasekaran, Sneha James, Madappa C. Maridevaru, Belqasem Aljafari, Sambandam Anandan
Summary: Hydrothermally synthesized perovskite materials have been found to have similar electrocatalytic activity to expensive platinum materials, providing a new approach for cost reduction in dye-sensitized solar cells (DSSCs).
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Ditpon Kotatha, Yoshiki Torii, Keito Shinomiya, Mayuko Ogino, Satoshi Uchida, Masashi Ishikawa, Tetsuya Furuike, Hiroshi Tamura
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2019)
Article
Physics, Applied
Masaki Iwashita, Soichiro Yamanaka, Ryohei Tsuruta, Ko Tonami, Koki Yoshida, Kei Hayakawa, Ludmila Cojocaru, Satoshi Uchida, Kazuhiko Mase, Yasuo Nakayama
APPLIED PHYSICS LETTERS
(2020)
Article
Chemistry, Physical
Anyi Mei, Yusong Sheng, Yue Ming, Yue Hu, Yaoguang Rong, Weihua Zhang, Shulin Luo, Guangren Na, Chengbo Tian, Xiaomeng Hou, Yuli Xiong, Zhihui Zhang, Shuang Liu, Satoshi Uchida, Tae-Woong Kim, Yongbo Yuan, Lijun Zhang, Yinhua Zhou, Hongwei Han
Editorial Material
Chemistry, Multidisciplinary
Tae Woong Kim, Satoshi Uchida
Summary: The response to the comment raised challenges and introduced a new transmission electron microscopy method.
ADVANCED MATERIALS
(2021)
Article
Physics, Applied
Saemi Takahashi, Satoshi Uchida, Abhijit Chatterjee, Hiroshi Segawa
Summary: The effect of chloride atoms in the perovskite intermediate phase was studied using molecular modeling and simulations. The calculation results showed that the lattice plane with chloride atoms had a lower growth rate.
APPLIED PHYSICS EXPRESS
(2022)
Article
Nanoscience & Nanotechnology
Tae Woong Kim, Satoshi Uchida, Myoung Kim, Sang Geun Cho, So Jeong Kim, Takashi Kondo, Hiroshi Segawa
Summary: In order to develop highly efficient solar cells, microscale structure control is crucial due to the harmful effects of microstructural defects on charge carrier flow inside organometal halide perovskites. This study confirmed the presence of large physical gaps at the grain boundary of a methylammonium iodide perovskite and showed that these gaps hinder charge carrier flow. Through microstructural phase control, the grain boundaries and physical gaps of the perovskite were significantly reduced, leading to a power conversion efficiency of 20.23% in a single cation perovskite solar cell.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Fumiyasu Awai, Yonbon Arai, Jotaro Nakazaki, Satoshi Uchida, Hiroshi Segawa
Summary: The effects of central metal ions and redox mediators on the performance of porphyrin-sensitized solar cells were investigated. Palladium porphyrin combined with Br-/Br-3(-) redox mediator achieved the highest power conversion efficiency among all combinations studied.
Article
Electrochemistry
Fumiyasu Awai, Yonbon Arai, Takumi Kinoshita, Jotaro Nakazaki, Satoshi Uchida, Hiroshi Segawa
Summary: In this study, the researchers found that the open-circuit voltage (Voc) of dye-sensitized solar cells can be improved by using interhalogen ions (XY2-; X, Y = I or Br) synthesized through the mixing of iodide and bromide redox couples. The presence of I- ions is crucial for achieving a higher short-circuit current (Jsc) in bromine-based electrolytes. The investigation also revealed that the interhalogen redox mediators enhance the photoenergy conversion efficiency (PCE) and enable a high Voc value of 0.91 V.
Article
Chemistry, Multidisciplinary
Saemi Takahashi, Satoshi Uchida, Hiroshi Segawa
Summary: The influence of chloride integration on perovskite film deposition, encompassing both the structures of intermediate phases and the properties of the final films, was explored. It was found that the formation of intermediate phases was directly correlated to the concentration of chloride, which in turn affected the film morphology. These findings are crucial for achieving high-quality perovskite films with controlled crystal growth and film morphology.
Article
Chemistry, Multidisciplinary
Nilanka M. Keppetipola, Maithri Dissanayake, Pubudu Dissanayake, Buddhika Karunarathne, Marie Anne Dourges, David Talaga, Laurent Servant, Celine Olivier, Thierry Toupance, Satoshi Uchida, Kirthi Tennakone, G. R. Asoka Kumara, Ludmila Cojocaru
Summary: Activated carbon derived from coconut shells has been used as an active material for supercapacitor electrodes due to its environmentally friendly nature and high surface area. The activated carbon exhibited a graphitic phase, high surface area, and large pore volume, leading to excellent energy storage properties in supercapacitors. Notably, the activated carbon electrodes showed a specific capacitance of 132.3 F g(-1) with a maximum BET surface area of 1998 m(2) g(-1) in aqueous electrolyte, demonstrating great potential for energy storage applications.
Article
Polymer Science
Raita Goseki, Fan Zhang, Kazuki Takahata, Satoshi Uchida, Takashi Ishizone
Proceedings Paper
Automation & Control Systems
Seiya Fujii, Satoshi Uchida, Ikuro Mizumoto
2019 12TH ASIAN CONTROL CONFERENCE (ASCC)
(2019)
Article
Polymer Science
Kazuki Takahata, Satoshi Uchida, Raita Goseki, Takashi Ishizone
Article
Economics
Satoshi Uchida, Hitoshi Yamamoto, Isamu Okada, Tatsuya Sasaki
Article
Environmental Sciences
Ryunosuke Ogawa, Masahiro Hirata, Birhane Gebreanenia Gebremedhin, Satoshi Uchida, Toru Sakai, Kazuhisa Koda, Koichi Takenaka
