Article
Chemistry, Multidisciplinary
Karolina Syrek, Magdalena Jazdzewska, Marcin Koziel, Leszek Zaraska
Summary: The characteristics of cuprous oxide thin films prepared by electrodeposition at different temperatures were studied. It was found that increasing the electrodeposition temperature not only increased the growth rate of the oxide, but also affected its crystalline orientation preference. The study also revealed that the photoelectrochemical cathode synthesized at the highest temperature had superior performance, likely due to its higher deposit thickness and material texture. Additionally, the potential of using such photocathodes for solar light-induced ammonia synthesis was demonstrated.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Mario Kurniawan, Michael Stich, Mayra Marimon, Magali Camargo, Ralf Peipmann, Thomas Hannappel, Andreas Bund
Summary: Research has demonstrated the efficient preparation of porous Cu2O photocathodes using electrodeposition methods, showing superior performance in PEC water splitting compared to flat Cu samples.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Priyanka Marathey, Biren Patel, Sakshum Khanna, Anjali Vanpariya, Abhijit Ray
Summary: The study demonstrates that covering the surface of cuprous oxide with Al (2%)-doped ZnO (AZO) or NiOx films can effectively improve the stability of photoelectrodes and reduce photocurrent degradation. Among them, NiOx overlayers can accelerate charge transfer kinetics and exhibit the minimum photocurrent degradation, showing potential in hydrogen evolution reaction kinetics.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Analytical
Mona Rasa Hosseinzade, Leila Naji, Fatemeh Hasannezhad
Summary: In this work, solution-processed p-type nickel oxide (NiO) was used as the hole transport layer (HTL) in bulk heterojunction polymer solar cells (BHJ PSCs). Interlayer engineering of BHJ PSC was achieved by adjusting the potential regime and electrodeposition parameters. The resulting NiO nanostructures showed improved structural and electrochemical properties. The anodic potentiostatic electrodeposition method increased the photovoltaic performance of the PSCs compared to the cyclic voltammetry (CV) method.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Review
Energy & Fuels
Jun Zhang, Tao Li, Jili Zheng, Yanqiu Xiao, Xiaotian Li, Jun Song, Chuanxiao Cheng, Wei Yang, Gang Chen
Summary: This article discusses the principles of photoelectrochemical water splitting and the development of hole transport layers, emphasizing the importance of photogenerated carriers and holes. It concludes with future strategies for improving the hole transport layer.
Article
Multidisciplinary Sciences
Abderrahime Sekkat, Maciej Oskar Liedke, Viet Huong Nguyen, Maik Butterling, Federico Baiutti, Juan de Dios Sirvent Veru, Matthieu Weber, Laetitia Rapenne, Daniel Bellet, Guy Chichignoud, Anne Kaminski-Cachopo, Eric Hirschmann, Andreas Wagner, David Munoz-Rojas
Summary: By using atmospheric pressure spatial atomic layer deposition, Cu2O thin films with ultra-low resistivity values were deposited at low temperatures. The properties of the films, such as carrier concentration, mobility, and optical band-gap, can be easily tuned by adjusting the oxygen fraction used during deposition. The defect landscape of the films is correlated to the overall defect concentration, which decreases with increasing oxygen fraction.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Young Jun Seo, Maheswari Arunachalam, Kwang-Soon Ahn, Soon Hyung Kang
Summary: The research reveals that modulating the nanostructure, light-harvesting, and optical bandgap of photocathodes through different ambient annealing can have a positive impact on the photoelectrochemical properties.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Jiangshan Shi, Bin Li, Qinghong Zhang, Yichuan Rui
Summary: AgCuO2, a p-type semiconductor with high hole mobility, synthesized by electrochemical deposition can serve as a hole transport layer in perovskite solar cells, achieving high efficiency and excellent properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Yang Zang, Chengli Yu, Jingjing Jiang, Huaiguo Xue
Summary: In this study, a novel photoelectrochemical biosensor was developed for sensitive detection of miR-141. The biosensor showed excellent performance and great potential in clinical application.
MICROCHEMICAL JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Yajun Fu, Jingxin Yang, Jin Wang, Linhong Cao
Summary: Designing and controlling heterostructures, such as the Cu2O/WO3 heterostructure studied in this work, can effectively improve the photoelectrochemical performance. The thickness of the Cu2O layer was found to play a crucial role in the performance enhancement of the heterostructure. By analyzing various characteristics, it was revealed that the built-in electric field at the interface dominated the efficient separation of electron-hole pairs in the heterostructure.
Article
Polymer Science
Yan-Fu Liu, Si-Wen Zhang, Yan-Xun Li, Shi-Lin Li, Li-Qing Huang, Ya-Nan Jing, Qian Cheng, Lin-Ge Xiao, Bo-Xin Wang, Bing Han, Jia-Jie Kang, Yuan Zhang, Hong Zhang, Hui-Qiong Zhou
Summary: In this study, a stable and low-cost molybdenum oxide hole transport layer (HTL) was prepared by adjusting the state of the precursor solution using an oxidant. The MoOx HTL showed good efficiency, applicability, and stability in organic solar cells.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Aleksandra Knapik, Karolina Syrek, Marcin Koziel, Leszek Zaraska
Summary: In this study, a simple electrochemical approach based on cathodic deposition was proposed to fabricate tin dioxide (SnO2) films with high electron mobility, stability, and favorable band edges positions. The obtained SnO2 layers exhibited improved photoelectrochemical properties after annealing treatment, showing higher photocurrents. It is expected that this approach can be an effective strategy for fabricating highly efficient photoanodes for photoelectrochemical and photovoltaic applications.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Energy & Fuels
K. Ramachandran, C. Jeganathan, R. Prabhakaran, M. Wakisaka, G. Paruthimal Kalaignan, S. Karuppuchamy
Summary: This article investigates the growth of CuSCN nanostructures by electrodeposition under different potentials and time, as well as their application in inverted perovskite solar cells. The study shows that two-dimensional cone-shaped CuSCN nanorods grown under specific conditions exhibit the best photovoltaic performance. Additionally, the charge transfer resistance and capacitive behavior of CuSCN layers were analyzed using electrochemical impedance spectroscopy, with the stability of PSCs tested in open atmospheric conditions over a 50-day period.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Nanoscience & Nanotechnology
Min-Kyu Son, Linfeng Pan, Matthew T. Mayer, Anders Hagfeldt, Michael Gratzel, Jingshan Luo
Summary: Cuprous oxide is a promising photocathode material for PEC water splitting, but suffers from poor stability in strong acidic or alkaline conditions. Improvements in performance have been made by introducing nanostructures and catalysts, but further research is needed to establish suitable protection strategies for durable PEC water splitting.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Karolina Syrek, Olena Tynkevych, Mateusz Wojtas, Marcin Koziel, Lukasz Pieta, Leszek Zaraska
Summary: The possibility of fabricating nanostructured ZnO layers on conductive glass substrates via simple room-temperature electrodeposition was investigated. The deposits' morphology, composition, and semiconducting properties were examined using various techniques. The photoelectrochemical performance of the ZnO photoanodes was found to be greatly influenced by the electrodeposition duration, with the most promising activity observed for the photoanode deposited at -1.5 V vs. SCE for 40 min.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Management
Hau Lee, Christopher Tang, S. Alex Yang, Yuxuan Zhang
Summary: The paper explores an innovative bank-intermediated trade finance contract called dynamic trade finance (DTF), analyzing its value, the impact of process uncertainties and information frictions, as well as the strategic interaction with FinTech. Results indicate that DTF reduces transaction costs and effectively screens borrowers, with its value being influenced by the reliability and length of the trade process, as well as the severity of information delay. FinTech can complement DTF by expediting information transmission and execution, but may also potentially substitute it by segmenting customers more efficiently.
M&SOM-MANUFACTURING & SERVICE OPERATIONS MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Il-Kwon Oh, Tania E. Sandoval, Tzu-Ling Liu, Nathaniel E. Richey, Chi Thang Nguyen, Bonwook Gu, Han-Bo-Ram Lee, Ralf Tonner-Zech, Stacey F. Bent
Summary: This study systematically investigates the growth characteristics of aluminum oxide films in atomic layer deposition (ALD) processes. The results show that the precursor structure plays a crucial role in both chemical reactivity and geometrical constraints during deposition.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Bonwook Gu, Ngoc Le Trinh, Chi Thang Nguyen, Sumaira Yasmeen, Houda Gaiji, Youngho Kang, Han-Bo-Ram Lee
Summary: In this study, the authors investigated the ALD reaction mechanisms using Monte Carlo simulations based on a simple steric hindrance model. The physical surface reactions of the precursors were modeled using MC simulations. The proposed MC simulation models yielded highly consistent results with experimental data and theoretical results obtained from density functional theory calculations.
CHEMISTRY OF MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Sumaira Yasmeen, Seung Wook Ryu, Sung-Hoon Lee, Han-Bo-Ram Lee
Summary: This review summarizes the noncoating applications of atomic layer deposition (ALD) in the semiconductor industry, including ALD for multiple patterning, area-selective atomic layer deposition, atomic layer etching, and ALD for dry photoresist. It identifies the trends in ALD for noncoating applications and highlights its potential in existing and future processes, providing a roadmap for further development in other noncoating applications.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Dong Su Kim, Ji Hoon Choi, Nishad G. G. Deshpande, Hak Hyeon Lee, Kun Woong Lee, Shin Young Oh, Hyung Koun Cho
Summary: This study investigates the hydration enthalpy difference of cations in an aqueous solution for the chemical self-oxidation process. It demonstrates the synthesis of Cu(OH)(x) nanowires photocathode through alkali cation-engineered chemical self-oxidation, which exhibits high purity and superior photoelectrochemical performance.
Article
Chemistry, Physical
Cheol Hyoun Ahn, Jeong Jae Kim, Won Seok Yang, Hyung Koun Cho
Summary: Composite synthesis with inorganic fillers is proposed to obtain solid-state electrolytes with high ionic conductivity and long-term stability. Biomolecule-based metal-organic frameworks (bio-MOFs) are introduced as efficient active fillers with abundant functional groups. The bio-MOF fillers show good distribution in the polymer electrolyte matrix, leading to enhanced electrochemical performance.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Sung Hyeon Jung, Ji Sook Yang, Hyung Koun Cho
Summary: In this study, a symmetric bidirectional transistors (SBT) is proposed, which combines the mechanisms of metal-oxide semiconductor field-effect transistor and TFT in different bias directions. The SBT device shows excellent on-current and midregion off-current, similar to ideal ambipolar transistors. Due to its multilevel signals and inverter behaviors, the SBT device is suitable for use in complementary-metal-oxide-semiconductors and logic memories.
MATERIALS HORIZONS
(2023)
Article
Materials Science, Multidisciplinary
Hak Hyeon Lee, Dong Su Kim, Swagotom Sarker, Ji Hoon Choi, Ho Seong Lee, Hyung Koun Cho
Summary: Surface-limited cation exchange and electrochemical activation processes can significantly enhance the mass activity of Rh catalysts. Rh atoms on the surface of NiOOH electrodes were replaced by cation exchange and activated by electrochemical reduction process. The resulting Rh catalysts exhibited small particle sizes without agglomeration, indicating a decrease in inactive inner Rh atoms. This surface-limited cation exchange process is an effective method for reducing inactive atoms of expensive noble metal catalysts.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Editorial Material
Chemistry, Physical
Han-Bo-Ram Lee, Seiyon Kim
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Yujin Lee, Kangsik Kim, Zonghoon Lee, Hong-Sub Lee, Han-Bo-Ram Lee, Woo-Hee Kim, Il-Kwon Oh, Hyungjun Kim
Summary: In this study, Dy incorporation was used to stabilize HfO2 films and increase the grain size, which resulted in a reduction of leakage current density and an increase in breakdown strength. The properties of Dy-doped HfO2 thin films were characterized using various analysis techniques. The phase transformation of HfO2 films from different planes to a main m(-111) plane was observed through X-ray diffraction, indicating the role of Dy in stabilizing the film. The increase in grain size due to Dy incorporation was confirmed by electron microscopy.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ji Sook Yang, Sung Hyeon Jung, Cheol Hyoun Ahn, Won Seok Yang, Jeong Jae Kim, Hyung Koun Cho
Summary: Hybrid InGaZnO (IGZO) phototransistors (Ph-TRs) with zeolitic-imidazolate-framework-67 (ZIF-67) as a photoabsorber demonstrate wide photodetection range, fast response/recovery speed, and high stability without additional gate bias. ZIF-67 absorbs visible light and transfers photoexcited electrons to the IGZO conduction band through a metal-to-metal charge transfer pathway, resulting in significant changes in photocurrent. The fast rise/fall time and repeatable photo-sensing performance under pulsed light-on/off cycles make it promising for real-time detection even at high frequencies.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Swagotom Sarker, Ji Hoon Choi, Hak Hyeon Lee, Dong Su Kim, Hyung Koun Cho
Summary: The sluggish oxygen evolution reaction and corrosive chlorine oxidation reaction limit the applications of abundant seawater in electrochemical energy conversion. Therefore, it is essential to develop an efficient anodic reaction alternative suitable for coupling with the cathodic counterpart. The hydrazine oxidation reaction (HzOR) offers a unique pathway to overcome these challenges due to its low thermodynamic oxidation potential.
Article
Chemistry, Physical
Chi Thang Nguyen, Eun-Hyoung Cho, Ngoc Le Trinh, Bonwook Gu, Mingyu Lee, Sunghee Lee, Jeong-Yub Lee, Youngho Kang, Han-Bo-Ram Lee
Summary: Area-selective deposition (ASD) using a precursor inhibitor (PI) has the potential to replace self-assembled monolayer inhibitors due to its wide material selection and process compatibility. This study introduces bis(ethylcyclopentadienyl)ruthenium [Ru(EtCp)(2)] as a homometallic PI for ASD of Ru. The blocking property is determined by the packing density of Ru(EtCp)(2) on the surface, and an additional H2O pulse is used to create more space for adsorption of Ru(EtCp)(2), improving the blocking property. Ru(EtCp)(2) with an additional H2O pulse inhibits the growth of Ru atomic layer deposition (ALD) film for up to 300 cycles. This study highlights the possibility of using homometallic PIs in future metal ASD processes.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Cheol Hyoun Ahn, Won Seok Yang, Jeong Jae Kim, Hyung Koun Cho
Summary: This study proposes a new synthesis design approach to control the DP-TiO2@NC architecture, derived from a two-step pyrolysis process, for developing electrodes that meet the requirements of high capacity and high rate capability. By tuning the configuration of mixed ligands, the electronic conductivity of the carbon frameworks can be enhanced, resulting in improved battery performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Dong Su Kim, Hee Won Suh, Sung Woon Cho, Shin Young Oh, Hak Hyeon Lee, Kun Woong Lee, Ji Hoon Choi, Hyung Koun Cho
Summary: This paper proposes an electrochemical design for improving the reliability of analog switching in RRAM-based neuromorphic computing by adding a sublayer of ultrafine Cu nanoparticles (U-Cu NPs) to the active Cu2O layer.
MATERIALS HORIZONS
(2023)