Review
Chemistry, Multidisciplinary
Ravi P. Srivastava, Dahl-Young Khang
Summary: Metal-assisted chemical etching (MaCE) is a simple, low-cost, and scalable method for producing silicon structures of various dimensions. Careful optimization of parameters is crucial for successful fabrication of silicon structures. MaCE enables bulk-scale structuring of silicon with significant opportunities for applications in various fields.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Julian A. Michaels, Lukas Janavicius, Xihang Wu, Clarence Chan, Hsieh-Chih Huang, Shunya Namiki, Munho Kim, Dane Sievers, Xiuling Li
Summary: This paper presents a plasma-free, open-circuit, photo-induced metal-assisted chemical etch method for fabricating micro and nanoscale features on Silicon carbide without causing high energy ion-related surface damage. The comprehensive exploration of parameter space demonstrates the controllability and versatility of this technique in producing ordered arrays of micro and nanoscale SiC structures with porous or solid sidewalls, while elucidating the etching mechanism.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Haibin Li, Shinya Kato, Tetsuo Soga
Summary: Through comparing different concentration silicon, it was found that high-doped silicon has the highest etching rate, contrary to existing reports. In addition, severe lateral etching of high-doped silicon was observed. Therefore, it is necessary to re-understand the etching characteristics and mechanism of high-doped silicon.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Multidisciplinary
Anafi Nur'aini, Ilwhan Oh
Summary: This research successfully developed a deep etching method for silicon microstructures using metal-assisted chemical etching technology, achieving fast etching of deep and vertical holes with high precision under the action of ultra-thin metal film, and avoiding the formation of porous defects.
Article
Chemistry, Physical
Yi-Yu Zhang, Sang-Ho Shin, Hyeok-Joong Kang, Sohee Jeon, Soon Hyoung Hwang, Weidong Zhou, Jun-Ho Jeong, Xiuling Li, Munho Kim
Summary: Porous Ge (PGe) layers were successfully formed on single-crystalline Ge (c-Ge) surfaces and in a releasable form using lithography-free metal-assisted chemical etching (MacEtch) at room temperature, with the uniformity of the PGe layer dependent on the oxide-free interface between the surface and metal catalyst. The primary factor affecting the reflection spectra was found to be the thickness of the PGe layers, demonstrating the potential value of PGe layers in photonics and optoelectronic device applications.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Antonio Alessio Leonardi, Maria Jose Lo Faro, Alessia Irrera
Summary: This article discusses the emerging technology of metal-assisted chemical etching (MACE) for the fabrication of silicon nanowires, comparing all the main routes for Si NWs and analyzing factors such as equipment cost, process complexity, repeatability, and the potential for commercial transfer in the field of microelectronics.
Article
Chemistry, Multidisciplinary
Rabia Akan, Ulrich Vogt
Summary: This study investigated the etching behavior of two zone plate catalyst designs in four different MACE conditions, shedding light on the challenges of etching high-aspect ratio silicon structures. The results showed that the brick wall design exhibited vertical Si structures and high mechanical stability under most investigated conditions, while the fishbone design required careful control of etching verticality despite higher mechanical stability.
Article
Chemistry, Physical
Caroline Lima Salles, William Nemeth, Harvey L. Guthrey, Chun-Sheng Jiang, Matthew R. Page, Sumit Agarwal, Paul Stradins
Summary: This study demonstrates a new method for the fabrication of solar cells, which involves the creation of conducting pinholes using metal-assisted chemical etching at room temperature. The fabricated solar cells with passivating contacts show superior performance, expanding the possibilities for the design of solar cell materials.
ADVANCED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Kikuo Makita, Hidenori Mizuno, Hitoshi Sai, Ryuji Oshima, Yasushi Shoji, Ralph Muller, Paul Beutel, David Lackner, Jan Benick, Martin Hermle, Frank Dimroth, Takeyoshi Sugaya
Summary: This article examines a highly efficient three-junction solar cell using a stacking method with Pd nanoparticles and metal-assisted chemical etching. The technology improves the bonding resistivity between GaAs-based and Si cells and aids in managing the bonding gap width. The proposed method has potential applications in connecting Si-based cells.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Chemistry, Multidisciplinary
Bing Liu, Lianhuan Han, Hantao Xu, Jian-Jia Su, Dongping Zhan
Summary: Electrochemical nanoimprint lithography (ECNL) is a promising technique for directly fabricating three-dimensional micro/nano-structures (3D-MNSs) on semiconductor wafers. The introduction of ultrasonics into the ECNL process improves the mass exchange between the ultrathin electrolyte layer and the bulk solution, leading to enhanced imprinting efficiency. Experimental investigations show that the imprinting efficiency is positively correlated with the reciprocal of the area duty ratio of the mold. The improved imprinting efficiency enables the fabrication of 3D-MNSs with higher aspect ratios and stronger light trapping effects, indicating potential applications in semiconductor functional devices.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Review
Green & Sustainable Science & Technology
Mohammad Yasir Arafat, Mohammad Aminul Islam, Ahmad Wafi Bin Mahmood, Fairuz Abdullah, Mohammad Nur-E-Alam, Tiong Sieh Kiong, Nowshad Amin
Summary: The article reviews the metal-assisted chemical etching (MACE) technique and its application in the fabrication of black silicon (BSi) solar cells, focusing on the characteristics and roles of Ag, Cu, and Ni as metal catalysts. The study found that Ag-etched BSi wafers are more suitable for high-quality and efficient Si solar cells, while Cu and Ni are more appropriate for mass production of BSi solar cells. Additionally, Ni-assisted chemical etching process takes longer than Cu but Ni-etched BSi solar cells exhibit enhanced light absorption capacity and lower activity in terms of the dissolution and oxidation process compared to Cu-etched BSi solar cells.
Article
Chemistry, Multidisciplinary
Maxime Gayrard, Justine Voronkoff, Cedric Boissiere, David Montero, Laurence Rozes, Andrea Cattoni, Jennifer Peron, Marco Faustini
Summary: Oxide-assisted chemical etching (OACE) is a novel method that uses metal oxides for etching to fabricate high aspect ratio nanostructures, compared to traditional metal-assisted chemical etching (MACE), OACE can reduce the number of fabrication steps under cost-effective solution processing.
Article
Nanoscience & Nanotechnology
Yikai Liao, You Jin Kim, Junyu Lai, Jung-Hun Seo, Munho Kim
Summary: Metal-assisted chemical etching (MacEtch) can create GaN nanoridge surfaces on undoped GaN thin films, reducing surface reflection in the UV regime and enhancing photodiode responsivity by 6 times.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Adbhut Gupta, J. J. Heremans, Gitansh Kataria, Mani Chandra, S. Fallahi, G. C. Gardner, M. J. Manfra
Summary: This study demonstrates the use of transverse magnetic focusing to measure electron-electron scattering length in high-mobility GaAs/AlGaAs heterostructures, proving it to be a precise and sensitive technique. It also quantitatively shows that electron-electron scattering is the main factor limiting TMF amplitudes in high-mobility materials.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Stella Gries, Manuel Brinker, Berit Zeller-Plumhoff, Dagmar Rings, Tobias Krekeler, Elena Longo, Imke Greving, Patrick Huber
Summary: Many biological materials have both small nanoscale pores and large macroscopic capillaries, allowing for optimized mass transport and lightweight structures. This study presents a novel approach to create hierarchical porosity in artificial materials using metal-assisted chemical etching (MACE) and photolithography, resulting in single-crystalline silicon with bimodal pore size distribution. The process involves a metal-catalyzed reduction-oxidation reaction and silver nanoparticles acting as catalysts. The resulting hierarchically porous silicon membranes have potential applications in energy storage, sensorics, and opto-fluidic applications.
Article
Chemistry, Physical
Seung Min Lee, Do Hwan Jung, Seonno Yoon, Yoonseo Jang, Jung Hwan Yum, Eric S. Larsen, Christopher W. Bielawski, Jungwoo Oh
APPLIED SURFACE SCIENCE
(2020)
Article
Engineering, Environmental
In Kyu Moon, Bugeun Ki, Jungwoo Oh
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Electrical & Electronic
Sunil Babu Eadi, Hyeong-Sub Song, Hyun-dong Song, Jungwoo Oh, Hi-Deok Lee
MICROELECTRONIC ENGINEERING
(2020)
Article
Engineering, Electrical & Electronic
Yoonseo Jang, Seung Min Lee, Do Hwan Jung, Jung Hwan Yum, Eric S. Larsen, Christopher W. Bielawski, Jungwoo Oh
SOLID-STATE ELECTRONICS
(2020)
Article
Multidisciplinary Sciences
Sunil Babu Eadi, Jeong Chan Lee, Hyeong-Sub Song, Jungwoo Oh, Ga-Won Lee, Hi-Deok Lee
SCIENTIFIC REPORTS
(2020)
Article
Materials Science, Multidisciplinary
Kyunghwan Kim, Bugeun Ki, Haekyun Bong, Keorock Choi, Jungwoo Oh
ADVANCED OPTICAL MATERIALS
(2020)
Article
Multidisciplinary Sciences
Bugeun Ki, Kyunghwan Kim, Keorock Choi, Jungwoo Oh
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Analytical
Dong Sup Kim, In Kyu Moon, Ji Hyun Yang, Kerock Choi, Jungwoo Oh, Seung Wook Kim
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Physical
Jangwon Bang, In Kyu Moon, Young Pyo Jeon, Bugeun Ki, Jungwoo Oh
Summary: This study explores the possibility of using wood-based TENG as alternative materials to reduce marine microplastics. The research demonstrates that the all-wood-based TENG device shows high voltage and current density, providing a new solution for biodegradable TENG systems.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Jangwon Bang, In Kyu Moon, Keorock Choi, Jungwoo Oh
Summary: In this study, alpha-Mo2C nanosheets with a terraced structure and numerous edges were synthesized as self-supported electrodes for hydrogen evolution reaction (HER). They exhibited long-term stability and satisfactory HER activity.
MATERIALS TODAY ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Jangwon Bang, In Kyu Moon, Jungwoo Oh
Summary: This paper introduces a photothermal system based on 3D carbonized wood and 2D porous reduced graphene oxide, which can promote solar steam generation. The unique 3D micro-sized water reservoirs formed between the wood and reduced graphene oxide maximize the thermal energy use of the graphene layer and reduce light reflection. This work provides new insights into the structural design for highly efficient solar steam generation devices.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Chemistry, Multidisciplinary
Kyunghwan Kim, Sunhae Choi, Haekyun Bong, Hanglim Lee, Minyoung Kim, Jungwoo Oh
Summary: Metal-assisted chemical etching (MACE) is a promising technique for semiconductors, but it relies on noble metals which limits its use in CMOS processes. In this study, we developed a NiSi alloy as a catalyst for MACE of Si substrates. NiSi showed successful anisotropic etching with a smooth surface, while pure Ni resulted in a rough-etched surface. By systematically analyzing the factors affecting MACE, we optimized the catalytic properties of NiSi, potentially enabling the use of MACE in contemporary CMOS processes.
Article
Chemistry, Physical
Jangwon Bang, In Kyu Moon, Young-Kwang Kim, Jungwoo Oh
Summary: In this study, heterostructured Mo2N-Mo2C nanoparticles on N-doped carbonized wood (Mo2N-Mo2C/N-CW) were synthesized as a self-supported electrode through carbonization and NH3 plasma treatment. The synergistic effects of heterostructured Mo2N-Mo2C and N-CW enhanced the catalytic activity, charge transfer kinetics, active site exposure, and electrolyte and H2 bubble transport, resulting in improved hydrogen evolution reaction (HER) performance.
Article
Chemistry, Physical
Keorock Choi, Jangwon Bang, In Kyu Moon, Kyunghwan Kim, Jungwoo Oh
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Chemistry, Multidisciplinary
Bugeun Ki, Keorock Choi, Kyunghwan Kim, Jungwoo Oh
Article
Chemistry, Physical
Mei Gui Vanessa Wee, Amutha Chinnappan, Runxin Shang, Poh Seng Lee, Seeram Ramakrishna
Summary: Cooling processes, from residences to industries, require a lot of energy and are essential. This study introduces MIL-101(Cr), a new desiccant, to heat exchangers for more efficient cooling. By improving the synthesis method and using a special binder, the MIL-101(Cr)-coated heat exchanger shows improved water uptake capacity and lower regeneration temperature.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ao Zhen, Guanyu Zhang, Ao Wang, Feng Luo, Jiehua Li, Hong Tan, Zhen Li
Summary: In this study, a solvent-free microemulsion method was used to synthesize waterborne polyurethane (WPU) material with high retention of mechanical properties and satisfactory water absorption rates. The material showed excellent biocompatibility and has broad application potential in the field of biomedicine.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Wensong Ge, Rui Wang, Xiaoyang Zhu, Houchao Zhang, Luanfa Sun, Fei Wang, Hongke Li, Zhenghao Li, Xinyi Du, Huangyu Chen, Fan Zhang, Huifa Shi, Huiqiang Hu, Yongming Xi, Jiankang He, Liang Hu, Hongbo Lan
Summary: This paper reviews the research on the surface tension of eutectic gallium-indium alloys (EGaIn) in the field of stretchable electronics. It covers the principles of oxide layer formation, factors influencing surface tension, and methods for surface modification of liquid metals. The paper also discusses the applications of EGaIn surface modification in different fields and highlights the challenges still faced and the future outlook.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiang Song, Lianghao Jia, Zhengen Wei, Tao Xiang, Shaobing Zhou
Summary: This paper provides an overview of the application, preparation, and role of biomimetic structures in solar evaporators with improved evaporation rate and lifetime.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Wei Yuan, Qian Deng, Dong Pan, Xiang An, Canyang Zhao, Wenjun Su, Zhengmin He, Qiang Sun, Ran Ang
Summary: Optimizing the performance of n-type PbTe thermoelectric materials is crucial for practical applications. Dynamic doping has emerged as an effective method to improve the performance of n-type PbTe by optimizing the carrier concentration. This study demonstrates the significance of Mn alloying in enhancing the performance of Ag-doped n-type PbTe by creating a hierarchical structure to suppress thermal transport and improving the Seebeck coefficient.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiaoyan Wang, Meiqi Geng, Shengjun Sun, Qian Xiang, Shiyuan Dong, Kai Dong, Yongchao Yao, Yan Wang, Yingchun Yang, Yongsong Luo, Dongdong Zheng, Qian Liu, Jianming Hu, Qian Wu, Xuping Sun, Bo Tang
Summary: This review provides a comprehensive analysis of the progress and challenges in the field of bifunctional electrocatalysts and efficient electrolyzers for seawater splitting. It summarizes recent advancements and proposes future perspectives for highly efficient bifunctional electrocatalysts and electrolyzers.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Jason K. Phong, Christopher B. Cooper, Lukas Michalek, Yangju Lin, Yuya Nishio, Yuran Shi, Huaxin Gong, Julian A. Vigil, Jan Ilavsky, Ivan Kuzmenko, Zhenan Bao
Summary: Dynamic block copolymers (DBCPs) combine the phase separation of traditional block copolymers with the supramolecular self-assembly of periodic dynamic polymers, resulting in the spontaneous self-assembly of high aspect ratio nanofibers with well-ordered PEG and PDMS domains. DBCPs with a periodic block sequence exhibit superior properties compared to those with a random sequence, including delayed onset of terminal flow and higher ionic conductivity values.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Hong Kyu Lee, Yasaswini Oruganti, Jonghyeon Lee, Seunghee Han, Jihan Kim, Dohyun Moon, Min Kim, Dae-Woon Lim, Hoi Ri Moon
Summary: This study reports the moisture-triggered proton-conductivity switching behavior in Zn5FDC MOFs induced by the presence and absence of coordinating solvents, which illustrates the significant role of coordinating solvents in conductivity variation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Bommaramoni Yadagiri, Sanjay Sandhu, Ashok Kumar Kaliamurthy, Francis Kwaku Asiam, Jongdeok Park, Appiagyei Ewusi Mensah, Jae-Joon Lee
Summary: The molecular engineering of the interface modulator between the perovskite and hole transporting material is crucial for achieving satisfactory performance and stability of perovskite solar cells. In this study, cruciform-shaped dual functional organic materials were employed as surface passivation and hole transporting interfacial layers in perovskite solar cells. The use of these materials significantly improved the power conversion efficiency of the solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Joaquin Martinez-Ortigosa, Reisel Millan, Jorge Simancas, Manuel Hernandez-Rodriguez, J. Alejandro Vidal-Moya, Jose L. Jorda, Charlotte Martineau-Corcos, Vincent Sarou-Kanian, Mercedes Boronat, Teresa Blasco, Fernando Rey
Summary: This study investigates the synthesis of all-silica RTH zeolites using triisopropyl(methyl)phosphonium as the organic SDA. The results show the formation of two distinct crystalline phases under different synthesis conditions, with fluoride bonding to different silicon sites. It demonstrates the possibility of controlling the placement of fluoride in RTH zeolites through synthesis conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Luyao Zheng, Cong Liu, Wenbiao Zhang, Boxu Gao, Tianlan Yan, Yahong Zhang, Xiaoming Cao, Qingsheng Gao, Yi Tang
Summary: This study successfully improves the efficiency and stability of water splitting by constructing a heterostructured electrocatalyst. The catalyst shows extraordinary performance and could offer an effective approach for the sustainable production of hydrogen.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Carlos A. Campos-Roldan, Raphael Chattot, Frederic Pailloux, Andrea Zitolo, Jacques Roziere, Deborah J. Jones, Sara Cavaliere
Summary: This study systematically evaluated the hydrogen evolution/oxidation reactions on a series of Pt-rare earth nanoalloys in alkaline media, and identified the effect of the lanthanide contraction. The experimental results revealed that the chemical nature of the rare earth modulates the adsorption and mobility of oxygenated-species, enhancing the kinetics of the reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Sara Frank, Mads Folkjaer, Mads L. N. Nielsen, Melissa J. Marks, Henrik S. Jeppesen, Marcel Ceccato, Simon J. L. Billinge, Jacopo Catalano, Nina Lock
Summary: This study investigates the thermal decomposition of ZIF-67 and its correlation with structural evolution and electrocatalytic performance. The researchers used in situ X-ray absorption spectroscopy and total scattering techniques to analyze the process. They found that disorder emerges at lower temperatures and that extending the pyrolysis process can result in materials with superior electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Zi-Yang Zhang, Hao Tian, Han Jiao, Xin Wang, Lei Bian, Yuan Liu, Nithima Khaorapapong, Yusuke Yamauchi, Zhong-Li Wang
Summary: By constructing Cu-0-Cu+-NH2 composite interfaces with the assistance of SiO2, the electrochemical CO2 reduction reaction (CO2RR) achieves high Faraday efficiency and current density for C2+ production, improving the productivity of carbon cycle.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ting Wang, Ruijuan Zhang, Pengda Zhai, Mingjie Li, Xinying Liu, Chaoxu Li
Summary: This study successfully exfoliated COFs using a simple electrochemical method, which resulted in improved photocatalytic performance for COFs and enriched the fabrication approach of COF exfoliation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)