Article
Chemistry, Multidisciplinary
Frederick Osei-Tutu Agyapong-Fordjour, Seok Joon Yun, Hyung-Jin Kim, Wooseon Choi, Balakrishnan Kirubasankar, Soo Ho Choi, Laud Anim Adofo, Stephen Boandoh, Yong In Kim, Soo Min Kim, Young-Min Kim, Young Hee Lee, Young-Kyu Han, Ki Kang Kim
Summary: Metallic-TMdCs catalysts have highly reactive basal-plane but are unstable, while chemically stable semiconducting-TMdCs show limiting catalytic activity. By dispersing metallic vanadium sulfide in a semiconducting MoS2 film to form V-MoS2 as an efficient catalyst, excellent hydrogen evolution reaction performance is achieved.
Article
Energy & Fuels
Sonam Rani, Manushree Tanwar, Meenu Sharma, Love Bansal, Rajesh Kumar, Ravi Bhatia, Sameera Ivaturi
Summary: Among transition metal dichalcogenides, molybdenum disulfide (MoS2) is considered as the most cost-effective electrode material for energy storage applications. Altering the synthesis conditions of MoS2 nanoflowers can result in enhanced charge storage performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Inseong Lee, Mingu Kang, Seohak Park, Cheolmin Park, Hyeonji Lee, Sanggeun Bae, Hyeongjin Lim, Sungkyu Kim, Woonggi Hong, Sung-Yool Choi
Summary: This study proposes a method to heal donor defect states in monolayer MoS2 using oxygen plasma, with an aluminum oxide (Al2O3) barrier layer that protects the MoS2 channel from damage. The successful healing of donor defect states in MoS2 by oxygen atoms, even in the presence of an Al2O3 barrier layer, has been confirmed. The proposed method enhances the channel properties of MoS2.
Review
Crystallography
Omnia Samy, Shuwen Zeng, Muhammad Danang Birowosuto, Amine El Moutaouakil
Summary: Molybdenum disulfide (MoS2) is a compound with outstanding features and wide applications, playing important roles in electronics and energy, as well as significant effects in detecting diseases like cancer and Alzheimer's.
Article
Chemistry, Physical
Maciej J. Szary
Summary: Transition-metal dichalcogenide (TMD) layers are being studied for their potential as electronic devices, but their low chemical activity poses challenges for functionalization. Dative bonding, using the chalcogen nonbonding lone-pair orbitals as electron donors, may overcome these limitations. This study investigates whether S -> P dative bonding can catalyze reactions on the surface of MoS2 and functionalize the sheet. The results show that the bonding facilitates the PH functionalization of MoS2, reducing the activation energy and providing selectivity for future advancements in TMD-based electronics.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Yuki Yamada, Yan Zhang, Hidekazu Ikeno, Keisuke Shinokita, Takeshi Yoshimura, Atsushi Ashida, Norifumi Fujimura, Kazunari Matsuda, Daisuke Kiriya
Summary: The study shows that the superacid treatment has a more effective photoluminescence effect on the edge of MoS2 and successfully maintained strong photoluminescence in the treated MoS2 for over 30 days in ambient conditions through encapsulation with transparent organic polymers. This research advances the understanding and design applications of strong luminescent properties in superacid-treated TMDCs and provides a platform for engineering exciton dynamics and handling multiple body states.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Md Tawabur Rahman, Raufur Rahman Khan, Yang Tian, Hussam Ibrahim, Liang Dong
Summary: This study demonstrates the room-temperature detection of N2O gas using 2D molybdenum disulfide nanoflakes decorated with gold nanoparticles. The combination of the electron-donating effect of AuNPs and the properties of MoS2 enables high sensitivity and excellent selectivity, with the ability to detect N2O levels as low as 0.5 ppm.
IEEE SENSORS JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Seongin Hong, Seungho Baek, Thi Thu Thuy Can, Woon-Seop Choi, Sunkook Kim
Summary: The study presents MoS2 photodetectors fabricated using electrohydrodynamic jet printing, showing high photosensitivity and photoresponsivity in both two-terminal and three-terminal configurations. This new approach provides a feasible solution for TMD-based photonics with high performance.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Alejandro Nunez-Lopez, Ramon Torres-Cavanillas, Marc Morant-Giner, Natalia Vassilyeva, Richard Mattana, Sergio Tatay, Philippe Ohresser, Edwige Otero, Emiliano Fonda, Michael Paulus, Victor Rubio-Gimenez, Alicia Forment-Aliaga, Eugenio Coronado
Summary: In this research, ultrathin films of spin-crossover materials were grown on 2D materials, and the properties and spin transition of these hybrid structures were studied. When using 2H MoS2 as the substrate, the spin transition in films thinner than 8 nm was hindered by Fe3+; while using 1T MoS2, the spin transition was preserved in films as thin as 4 nm.
Article
Optics
Anna A. Popkova, Ilya M. Antropov, Gleb Tselikov, Georgy A. Ermolaev, Igor Ozerov, Roman Kirtaev, Sergey M. Novikov, Andrey B. Evlyukhin, Aleksey Arsenin, Vladimir O. Bessonov, Valentyn S. Volkov, Andrey A. Fedyanin
Summary: Recent discoveries have shown that bulk TMDCs have excellent properties for post-silicon photonics, such as high refractive index, giant optical anisotropy, and pronounced excitonic response. However, their inversion symmetry hinders their use in nonlinear-optical processes. By engineering MoS2 nanodisks to couple Mie resonances with C-excitons, researchers have overcome this obstacle and achieved a 23-fold enhancement of SHG intensity. Additionally, the SHG demonstrates a strong anisotropic response typical of a MoS2 monolayer.
LASER & PHOTONICS REVIEWS
(2022)
Article
Chemistry, Physical
Yuling Zhuo, Eric Prestat, Ian A. Kinloch, Mark A. Bissett
Summary: Two-dimensional materials such as graphene and MoS2 have potential applications in energy storage, but their performance is limited by restacking and poor electrical conductivity. In this study, a true composite electrode was formed by chemically modifying graphene to self-assemble with MoS2, resulting in an alternating layer structure. This composite electrode exhibited improved energy storage properties and stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Koosha Nassiri Nazif, Aravindh Kumar, Jiho Hong, Nayeun Lee, Raisul Islam, Connor J. McClellan, Ouri Karni, Jorik van de Groep, Tony F. Heinz, Eric Pop, Mark L. Brongersma, Krishna C. Saraswat
Summary: Layered semiconducting transition metal dichalcogenides (TMDs) have excellent optoelectronic properties, but practical contacts to TMDs have poor charge carrier selectivity, leading to low open-circuit voltage (V-OC) and limited power conversion efficiency (PCE). A simple MoOx (x approximate to 3) surface charge-transfer doping and passivation method was applied to multilayer tungsten disulfide (WS2) solar cells to address these issues, resulting in lateral p-n junction photovoltaic cells with a record V-OC of 681 mV, the highest among all p-n junction TMD solar cells with a practical design, and leading to record PCE in ultrathin (<90 nm) WS2 photovoltaics.
Article
Chemistry, Multidisciplinary
Muhammad Naqi, Bosung Kim, Sang-Woo Kim, Sunkook Kim
Summary: This study experimentally investigated the potential applications of a combined structure of flexible MoS2-based FET and piezoelectric device in high-speed ultrasound wave detection. The proposed device exhibited excellent performance and stable ultrasound wave detection capability under different power levels.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Narine Moses Badlyan, Nina Pettinger, Niklas Enderlein, Roland Gillen, Xin Chen, Wanzheng Zhang, Kathrin C. Knirsch, Andreas Hirsch, Janina Maultzsch
Summary: This study presents a Raman investigation of MoS2 powders and MoS2 individual layers functionalized with organic molecules. It is found that the functionalized MoS2 powders are oxidized into MoO3 upon increasing temperature, while the mechanically exfoliated individual MoS2 layers do not undergo the same transformation. During the covalent functionalization, few-layer MoS2 undergoes a partial transition from the 2H to the 1T' crystallographic phase.
Article
Chemistry, Physical
Suresh C. Prasanna, V Shalini, S. Harish, J. Archana, Kamala K. Bharathi, Senthil Kumar Eswaran, M. Navaneethan
Summary: Transition Metal Dichalcogenides (TMDs), especially molybdenum disulfide (MoS2), are highly preferred as a candidate for thermo-electric (TE) applications due to their low thermal conductivity. However, their low electrical conductivity hinders the thermoelectric performance. In this study, MoS2 was grown on carbon fabric (CF) and decorated with copper oxide (CuO) using hydrothermal and spray deposition methods. The results showed that the addition of CuO significantly improved the thermoelectric properties of MoS2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Jaeseo Park, Jihun Mun, Jae-Soo Shin, Jongho Kim, Hee Jung Park, Sang-Woo Kang
JOURNAL OF NANOPARTICLE RESEARCH
(2017)
Article
Nanoscience & Nanotechnology
Jaeseo Park, Hyeji Park, Suho Park, Nguyen Thi Thuy, Jihun Mun, Junoh Kim, Sang Jun Lee, Zahyun Ku, Sang-Woo Kang
Summary: The study introduces a MOCVD method for growing vertically aligned MoS2 nanoflowers with controlled S/Mo ratio, optical properties, and orientation by adjusting the partial pressure ratio of the reaction gases. The method also allows for regulating the flower size and photoluminescence intensity of MoS2 NFs, showing potential for flexible devices integration.
Article
Chemistry, Multidisciplinary
Woongbi Cho, Jehwan Hwang, Sang Yeon Lee, Jaeseo Park, Nara Han, Chi Hwan Lee, Sang-Woo Kang, Augustine Urbas, Jun Oh Kim, Zahyun Ku, Jeong Jae Wie
Summary: This study introduces a highly sensitive and cost-effective polymeric sulfur-based polarizer by replicating pre-simulated dimensions and achieving high transmission of the transverse magnetic field (T-TM) and extinction ratio (ER). By systematically investigating thermal nanoimprinting conditions, the dimensions of the polarizer can be accurately replicated. The spacer thickness can be tailored by adjusting the concentration of polymeric sulfur solution, maximizing T-TM in the broadband MWIR region.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jongwon Ryu, Seob Shim, Jeongin Song, Jaeseo Park, Ha Sul Kim, Seoung-Ki Lee, Jae Cheol Shin, Jihun Mun, Sang-Woo Kang
Summary: Gas sensors applied in real-time detection require a reliable test platform to evaluate their characteristics. This study investigates the effect of measurement conditions and system configurations on the sensitivity of 2D material-based gas sensors. The results show that the distance between the gas inlet and the sensor and the gas inlet orientation influence the sensor performance, with a decrease in distance leading to improved sensitivity and a perpendicular gas inlet orientation achieving maximum sensitivity.
Article
Nanoscience & Nanotechnology
Jaeseo Park, Jung Woo Leem, Zahyun Ku, Jun Oh Kim, Won C. Chegal, Sang-Woo Kang, Young L. Kim
Summary: In the era of hyperconnected contemporary society, hardware and information security heavily rely on advanced cryptographic primitives. Physically unclonable function (PUF), implemented utilizing nanomaterials, offers a versatile solution with unique features such as randomness, uniqueness, reproducibility, low false rates, and long-term stability. The heteronanostructured MoS2/TiO2 provides a reliable source of entropy and shows promise for scalable nano manufacturing strategies in enhancing cryptosystems.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Jihun Mun, Hyeji Park, Jaeseo Park, DaeHwa Joung, Seoung-Ki Lee, Juyoung Leem, Jae-Min Myoung, Jonghoo Park, Soo-Hwan Jeong, Won C. Chegal, SungWoo Nam, Sang-Woo Kang
ACS APPLIED ELECTRONIC MATERIALS
(2019)
