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
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
Energy & Fuels
Muhammad Yasin, Muhammad Khan, Norah Alwadai, Munawar Iqbal
Summary: Nanorods of TiO2, Sn-doped TiO2, TiO2@Sn-TiO2 and Sn-TiO2@TiO2 were prepared and characterized using SEM, XRD and UV-Vis spectroscopy. The results showed that the heterostructure film of Sn-TiO2@TiO2 had the smallest band gap and highest efficiency in DSSC among the four films.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(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
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
Yi Di, Tianshi Qin
Summary: Incorporating plasmonic ZrN@TiO2 nanostructures into the photoanode of DSSC can efficiently improve the photovoltaic performance, showing potential applications.
Article
Chemistry, Multidisciplinary
La Ode Agus Salim, Muhammad Zakir Muzakkar, Ahmad Zaeni, Maulidiyah Maulidiyah, Muhammad Nurdin, Siti Naqiyah Sadikin, Jaenuddin Ridwan, Akrajas Ali Umar
Summary: Doping TiO2 with sulfur (S) improves the photoelectrical properties of the photoanode, increasing the power conversion efficiency of dye-sensitized solar cells (DSSC).
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
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
Engineering, Electrical & Electronic
Yu-Hsun Nien, Zhen-Rong Yong, Jung-Chuan Chou, Chih-Hsien Lai, Po-Yu Kuo, Yu-Che Lin, Yi-Ting Wu, Ruei-Hong Syu
Summary: In this study, the addition of g-C3N4/TiO2 NFs was found to enhance the photovoltaic performance of DSSCs, with the modified DSSC achieving a photoelectric conversion efficiency of 5.22%, an increase of 27% compared to the unmodified DSSC.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Engineering, Electrical & Electronic
Ramkumar Sekar, Ramesh Sivasamy, Baez Ricardo, Paulraj Manidurai
Summary: The synthesis of TiO2/ZnS nanocomposites using ultra-sonication method was investigated in terms of their structural, morphological and optical properties. The nanocomposites showed an enhancement in UV-Vis region and an efficiency increase of 27.7% compared to pure TiO2 when used as a secondary layer in DSSC.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
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
Materials Science, Multidisciplinary
D. Karthigaimuthu, B. Arjun Kumar, T. Elangovan, Gopal Ramalingam, Sujith Kalluri, Sambasivam Sangaraju, Salah Addin Burhan Al Omari
Summary: In this study, an innovative technique was used to produce agglomeration free and distinct metal oxide nanosheets using pigeon excreta as a surfactant and capping agent. The different characterizations and analyses explained the mechanism involved in forming these nanosheets. The metal oxides mediated by pigeon excreta showed improved photovoltaic performance compared to pure metal oxides.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Energy & Fuels
M. Shobana, P. Balraju, N. Muthukumarasamy, Dhayalan Velauthapillai
Summary: The objective of this research is to synthesize an active electrode material for dual application in dye-sensitized solar cells and supercapacitors. Aliovalent rare earth yttrium-doped TiO2 nanomaterials were successfully synthesized through a green synthesis approach using glycerol as a ligand. The synthesized material showed promising performance in both DSSCs and SCs applications, demonstrating its potential for energy conversion and storage devices.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Khalid Zouhri, Matthew Spencer, Kayla Nulph, Philip Appiah-Kubi, K. A. Shiral Fernando
Summary: With the increasing global demand for energy, it is necessary to explore alternative sources to meet this demand. Solar power generation is considered the future of alternative energy due to its low maintenance requirements. DSSCs are a cheaper and easier to produce type of solar cell, making research on improving their efficiency highly important. This study investigates the impact of changing the porosity of the TiO2 layer in DSSCs, using different combinations of temperatures, times, and sintering processes. It found that a porosity range of 0.03 to 0.04 cm(3)g(-1)nm(-1) provides the highest efficiency for DSSCs.
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
Jung Sug Hong, Hee Jung Kim, Chang Hwun Sohn, Oh Yeong Gong, Jin Hyuk Choi, Kang Hee Cho, Gill Sang Han, Ki Tae Nam, Hyun Suk Jung
Summary: This study reports a novel synthesis of whitlockite and its application as a high-performing Pb2+ absorbent. The synthesized biomineral exhibits excellent Pb2+ absorption capacity and the absorbed Pb2+ ions can be recycled for the fabrication of perovskite solar cells.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Sun Kyung Hwang, Ik Jae Park, Se Won Seo, Jae Hyun Park, So Jeong Park, Jin Young Kim
Summary: We demonstrate an efficient monolithic two-terminal perovskite/CZTSSe tandem solar cell by reducing the surface roughness of the electrochemically deposited CZTSSe bottom cell. The perovskite top cell with a bandgap of 1.65 eV is prepared on the flattened CZTSSe bottom cell, resulting in efficient perovskite/CZTSSe tandem solar cells. The best performing tandem device exhibits a high conversion efficiency of 17.5% without the hysteresis effect.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Hyun Woo Lim, Jae Hyun Park, Bingyi Yan, Jin Young Kim, Chan Woo Lee
Summary: In this study, a new type of titanium foam electrode with core/shell-structured mixed metal oxide nanoparticles was demonstrated to achieve almost zero polarization for the chlorine evolution reaction in chlor-alkali electrolysis. The electrode showed significantly lower noble metal usage compared to commercial electrodes and exhibited fast charge-transfer kinetics and high mass transport rates, leading to excellent performance in chlorine and hydrogen gas evolution reactions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Chemistry, Multidisciplinary
Dehao Yu, Xiao Xiao, Cyrus Shokoohi, Yanxin Wang, Liyue Sun, Zhaoge Juan, Matt J. J. Kipper, Jianguo Tang, Linjun Huang, Gill Sang Han, Hyun Suk Jung, Jun Chen
Summary: Smart nanofiltration membranes with stimuli-responsive components can change their properties in response to environmental changes, leading to more efficient performance and broader application prospects. This review presents the preparation methods and classification of stimuli-responsive membranes according to their mechanisms. The latest progress and main mechanisms of each stimuli-response type are discussed and summarized. Additionally, future challenges and directions for stimuli-responsive membranes are provided.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Energy & Fuels
Min Kyung Lee, Sungkyun Choi, Hoonkee Park, Tae Hyung Lee, Sol A. Lee, Jin Wook Yang, Su Geun Ji, Woo Seok Cheon, Sang Hyun Ahn, Soo Young Kim, Mohammadreza Shokouhimehr, Jin Young Kim, Ho Won Jang
Summary: A novel nickel-based 2D MOF was synthesized and demonstrated excellent electrocatalytic performance for the oxygen evolution reaction. The resulting Ni-NDC@NF exhibited low overpotential, small Tafel slope, high faradaic efficiency, and long-term stability. Furthermore, the electrodeposition of NiMo alloy on Ni-NDC@NF enhanced the hydrogen evolution reaction activity, enabling efficient overall water splitting.
Article
Chemistry, Physical
Yeo Jin Choi, Sung Yeon Lim, Jae Hyun Park, Su Geun Ji, Jin Young Kim
Summary: This paper presents a study on the use of a highly volatile solvent mixture to prevent chemical degradation of PVSK middle cell and to improve the performance of the PVSK top cell. The addition of urea enhances the crystallinity and light-absorbing capability of the PVSK top cell, resulting in an increase in conversion efficiency from 6.4% to 13.9%. With the aid of the new solvent and urea additive, the PVSK/PVSK/Si 3J tandems achieve a record-high efficiency of 22.23%.
ACS ENERGY LETTERS
(2023)
Review
Nanoscience & Nanotechnology
Ik Jae Park, Hyo Kyung An, Yuna Chang, Jin Young Kim
Summary: With metal halide perovskite-based solar cells achieving a photovoltaic performance of approximately 26% and approaching the theoretical Shockley-Queisser limit, researchers are now focusing on tandem solar cells that use perovskite materials to achieve high efficiency. However, interfacial issues and difficulties in fabricating solution-processed perovskite top cells pose challenges for achieving high efficiency and stability. This paper provides a summary and review of the fundamentals and strategies to overcome these issues in tandem solar cells.
Article
Engineering, Environmental
Hee Jung Kim, Gill Sang Han, Jaesung Kim, Young Ju Kim, Jin Hyuk Choi, Jae Myeong Lee, Geon Woo Yoon, Hongshin Lee, In Sun Cho, Jaesang Lee, Hyun Suk Jung
Summary: In this study, we developed an all-in-one multi-pollutants removal filter based on inverse opal (IO) structures for decentralized water treatment. The filter consists of three adsorbents: Fe2O3, NiOx, and S-doped graphene, for the simultaneous removal of heavy metals, anionic substances, and organic matter. The filter exhibited excellent adsorption performance and ultrafast water flux, making it suitable for practical applications in water treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
He Guo, Geon Woo Yoon, Zi Jia Li, Yeonghun Yun, Sangwook Lee, You-Hyun Seo, Nam Joong Jeon, Gill Sang Han, Hyun Suk Jung
Summary: This study demonstrates a method using light-induced cross-linking to fabricate highly efficient and stable perovskite solar cells. The cross-linked perovskite film shows improved crystal orientation, larger grain size, and protection from water corrosion. Devices fabricated using this method achieve excellent power conversion efficiency and storage stability.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Hee Jung Kim, Oh Yeong Gong, Young Ju Kim, Geon Woo Yoon, Gill Sang Han, Hyunjung Shin, Hyun Suk Jung
Summary: This study proposes an efficient approach to recover and reuse toxic solvents used in the recycling process of perovskite solar cells (PSCs). Through detailed evaluations and a two-step selective dissolution process, the study demonstrates the feasibility of a toxic solvent recycling process for PSC refabrication and the recycling of dissolved hole-conducting materials. The fabricated PSCs exhibited a comparable power conversion efficiency to that of the original PSCs.
ACS ENERGY LETTERS
(2023)
Review
Chemistry, Inorganic & Nuclear
Jin Wook Yang, You Jin Ahn, Deok Ki Cho, Jin Young Kim, Ho Won Jang
Summary: Photovoltaic-electrochemical (PV-EC) fuel production is a promising technology that combines solar energy conversion and electrochemical catalysis. Halide perovskite solar cells with adjustable band gaps are attractive for PV-EC devices as they can boost electrochemical reactions without external power supply. This review focuses on halide perovskite PV-EC fuel generation, including device principles, band gap engineering, and material candidates for electrocatalysts. Recent advances in electrocatalysts, halide perovskite solar cells, and PV-EC devices for improving solar-to-fuel conversion efficiency are summarized.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Mi Gyoung Lee, Jin Wook Yang, Ik Jae Park, Tae Hyung Lee, Hoonkee Park, Woo Seok Cheon, Sol A. Lee, Hyungsoo Lee, Su Geun Ji, Jun Min Suh, Jooho Moon, Jin Young Kim, Ho Won Jang
Summary: The introduction of indium oxide nanorods as an electron transport layer enhances the photoelectrochemical performance of bismuth vanadate. A tannin-nickel-iron complex is used as an oxygen evolution catalyst to accelerate the reaction kinetics. The fabricated TANF/BiVO4/In2O3 NR photoanode exhibits improved photoactivity with high photocurrent densities.
Review
Chemistry, Physical
Ga-Yeong Kim, Kyusun Kim, Hee Jung Kim, Hyun Suk Jung, Il Jeon, Jin-Wook Lee
Summary: Despite the high-efficiency and low production cost, the toxicity of lead-containing metal halide perovskite solar cells (PSCs) poses a major challenge for their practical commercialization and widespread applications. Efforts to develop alternative Pb-free compositions and strategies to immobilize and recycle Pb in Pb-based PSCs have been reviewed. However, complete elimination of Pb from commercially competitive PSCs might require a considerable amount of time and resources, making risk management strategies for available Pb-based PSCs essential for the commercialization of sustainable and environmentally viable PSCs.
