Article
Chemistry, Physical
Zhuang-Hao Zheng, Dong-Liang Zhang, Jun-Yu Niu, Xiao-Lei Shi, Tian-Bao Chen, Yun-Fei Chen, Fu Li, Guang-Xing Liang, Yue-Xing Chen, Ping Fan, Zhi-Gang Chen
Summary: In this study, high-performance Ag2Se thin films were fabricated using an advanced thermal co-evaporation method, and the thermoelectric performance was optimized through compositional control and annealing process. The results demonstrate the great potential of the optimized Ag2Se thin films for applications in wearable electronics.
MATERIALS TODAY ENERGY
(2022)
Article
Environmental Sciences
Lu Zhang, Wilfried Brutsaert
Summary: In descriptions of landscape evaporation, actual evaporation and atmospheric evaporative demand exhibit complementary behavior. Different representations show that the functional forms of the mean annual evaporation precipitation ratio are quite insensitive to the exact nature of the maximum possible evaporation.
WATER RESOURCES RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Xin Cheng, Bo Zhu, Dongwang Yang, Xianli Su, Wei Liu, Hongyao Xie, Yun Zheng, Xinfeng Tang
Summary: In this study, (Ag, In)-co-doped Cu2SnSe3-based compounds were prepared using a self-propagating high-temperature synthesis process, followed by plasma-activated sintering (PAS) to obtain consolidated composite bulks. The addition of Ag2Se was found to effectively enhance the thermoelectric properties of the composites, resulting in optimized power factor and significantly suppressed lattice thermal conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Hao Wu, Xiao-lei Shi, Jingui Duan, Qingfeng Liu, Zhi-Gang Chen
Summary: This review provides a comprehensive summary of the progress, challenges, and outlook for Ag2Se-based thermoelectric materials. The fundamentals of Ag2Se, including its physical properties and mechanical characteristics, are presented. Advanced strategies for enhancing the thermoelectric and mechanical properties of Ag2Se-based materials are discussed, along with the development of device designs and novel applications. Controversies, challenges, and future prospects for Ag2Se-based thermoelectrics are also addressed.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Physics, Applied
L. S. Sharath Chandra, S. K. Ramjan, Soma Banik, Archna Sagdeo, M. K. Chattopadhyay
Summary: beta-Ag2Se exhibits a broad hysteresis in electronic properties above 35K, including resistivity, Hall coefficient, Seebeck coefficient, thermal conductivity, and ultraviolet photoelectron spectra. This hysteresis is not associated with a structural transition, indicating a semiconductor to metallic transition in beta-Ag2Se. Overall, a constant and moderately high thermoelectric figure of merit is observed in the temperature range of 300-395K.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
S-R Bae, D. Y. Heo, S. Y. Kim
Summary: Metal halide perovskites have gained significant attention in the semiconductor field due to their simple manufacturing process, high optoelectronic performance, and low cost. This review focuses on the spin-coating method and thermal evaporation method used to fabricate perovskite thin films, as well as the research progress on perovskite devices developed using thermal evaporation.
MATERIALS TODAY ADVANCES
(2022)
Article
Chemistry, Inorganic & Nuclear
K. Chen, T. Chen, L. Ai, H. W. Ming, S. J. Li, J. Zhang, X. Y. Qin, H. X. Xin, C. J. Song, D. Li
Summary: In this work, a Bi2Te2.5Se0.5 matrix dispersed with Ag2Se nanoparticles is fabricated, leading to significant improvements in the thermoelectric properties of the material. The increased electron mobility and optimized carrier concentration result in enhanced thermoelectric performance, while the introduction of Ag2Se nanoparticles reduces thermal conductivity. The results show that this strategy effectively enhances the TE performance and mechanical properties of n-type Bi2Te3-based materials.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Min Jin, Jiasheng Liang, Pengfei Qiu, Hui Huang, Zhongmou Yue, Lina Zhou, Rongbin Li, Lidong Chen, Xun Shi
Summary: Silver selenide (Ag2Se) is a promising low-temperature thermoelectric material with good thermoelectric properties that can be used to harvest low-quality waste heat for power generation or cooling microelectronics. In this study, Ag2Se was prepared using the zone-melting method, and its electrical and thermal transport properties were systematically investigated.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Siqi Lin, Linlin Guo, Xianghu Wang, Yue Liu, Yuying Wu, Rongbin Li, Hezhu Shao, Min Jin
Summary: This study demonstrates the excellent thermoelectric and mechanical properties of large-sized Ag2Se single crystals grown on low-symmetric (201) crystal planes using the Bridgeman method. The crystals show high carrier mobility, low lattice thermal conductivity, and good ductility, indicating their great potential for various applications near room temperature.
JOURNAL OF MATERIOMICS
(2023)
Article
Nanoscience & Nanotechnology
Junze Zhang, Mohammad Nisar, Hanwen Xu, Fu Li, Zhuanghao Zheng, Guangxing Liang, Ping Fan, Yue-Xing Chen
Summary: In this study, an n-type Ag2Se thermoelectric flexible thin film was successfully fabricated on a polyimide substrate via a thermal diffusion method. The thermoelectric performance was optimized by adjusting the diffusion pressure and temperature. The film exhibited high Seebeck coefficient and electrical conductivity. The thermal diffusion method resulted in a wave-shaped buckling structure, which has the potential to achieve a larger temperature difference.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xueqing Lian, Jicheng Wang, Baopeng Ma, Xiaolian Chao, Zupei Yang, Fudong Zhang, Di Wu
Summary: By alloying Sb2Se3 and introducing Zn and Ag2Se, we have successfully obtained n-type PbSe material with excellent thermoelectric performance, featuring ultra-low lattice thermal conductivity and high ZT value.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Metallurgy & Metallurgical Engineering
Cui Yang, Li Shouhang, Ying Tao, Bao Hua, Zeng Xiaoqin
Summary: This study proposes an efficient method based on first principles to calculate the thermal conductivity of pure metals. The calculated results are consistent with measured values, with electronic and phonon structures identified as key parameters in metal thermal conduction. As temperature increases, the ratio of electronic thermal conductivity to total thermal conductivity gradually rises.
ACTA METALLURGICA SINICA
(2021)
Article
Nanoscience & Nanotechnology
Shaoji Huang, Tian-Ran Wei, Heyang Chen, Jie Xiao, Min Zhu, Kunpeng Zhao, Xun Shi
Summary: Ag2Se is a high performance thermoelectric material with high carrier mobility and low lattice thermal conductivity, but there has been data discrepancy in evaluating its thermoelectric performance. By studying the preparation methods and introducing a slight excess of selenium, the thermoelectric performance of Ag2Se can be greatly improved.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Thermodynamics
Evangelia Tarani, Dimitrios Stathokostopoulos, Dimitrios Karfaridis, Lamprini Malletzidou, Ioanna K. Sfampa, Fani Stergioudi, Georgios Maliaris, Nikolaos Michailidis, Konstantinos Chrissafis, George Vourlias
Summary: Researchers have synthesized Ag2Se and Cu2Se thermoelectric materials with high oxidation resistance using the high-energy ball milling (HEBM) process, demonstrating a simple synthesis method.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Multidisciplinary
Mohammad Mostafa Al Mahfuz, Junsung Park, Rakina Islam, Dong-Kyun Ko
Summary: With the emergence of IoT, wearable electronics, and machine vision, the demand for miniaturization in infrared detectors has increased significantly. Ag2Se intraband colloidal quantum dots have shown great potential in addressing this demand, with wafer-scale integration and Auger suppression being key material capabilities.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Sajjad Hussain, Dhanasekaran Vikraman, Zulfqar Ali Sheikh, Muhammad Taqi Mehran, Faisal Shahzad, Khalid Mujasam Batoo, Hyun-Seok Kim, Deok-Kee Kim, Muhammad Ali, Jongwan Jung
Summary: This study presents the fabrication of WS2@MXene/GO nanocomposites for electrochemical supercapacitors and water splitting reactions. The nanocomposites exhibited high specific capacitance, specific energy, and cycling stability. The WS2@MXene/GO nanocomposites also showed efficient electrocatalytic activity for the hydrogen evolution reaction in both acidic and alkaline mediums, as confirmed by experimental and computational results.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
K. Karuppasamy, Ranjith Bose, Dhanasekaran Vikraman, Sivalingam Ramesh, Heung Soo Kim, Emad Alhseinat, Akram Alfantazi, Hyun-Seok Kim
Summary: In this study, cost-effective and highly active Co3O4@C nanostructures were designed and developed from two different metal-organic framework ligands. The unique morphologies and excellent surface area of the catalysts resulted in increased active centers for oxygen evolution activity. Among them, Co3O4@C-TMA exhibited favorable Tafel kinetics and small overpotential for oxygen evolution. This study not only designs effective electrodes for oxygen evolution activity, but also proposes various multi-functional catalysts for renewable energy conversion applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Sajjad Hussain, Dhanasekaran Vikraman, Maria Sarfraz, Muhammad Faizan, Supriya A. A. Patil, Khalid Mujasam Batoo, Kyung-Wan Nam, Hyun-Seok Kim, Jongwan Jung
Summary: This article reports the fabrication of MoS2@VS2 and WS2@VS2 hybrid nano-architectures via a one-step hydrothermal approach. The hierarchical hybrids exhibit high specific capacitances for supercapacitor and show excellent catalytic performance for hydrogen evolution reaction.
Article
Energy & Fuels
Ahmed AlZaabi, Muhammad Arif, Mujahid Ali, Ahmed Adila, Yawar Abbas, Ravi Shankar Kumar, Alireza Keshavarz, Stefan Iglauer
Summary: In this study, the wettability alteration potential of cationic surfactant CTAB and anionic surfactant SDBS on carbonate rocks and calcite mineral samples was investigated. The results showed that CTAB had a strong wettability alteration ability on the calcite surface, but increasing the surfactant concentration did not necessarily improve the wettability alteration. The wettability alteration potential of CTAB was found to be correlated with the calcite content of the carbonate sample. Additionally, the contact angles slightly increased with increasing pressure and decreased with increasing temperature. The presence of carboxylate groups tended to make the CTAB-treated surface more hydrophilic.
Article
Biochemistry & Molecular Biology
Baskar Thangaraj, Fatima Mumtaz, Yawar Abbas, Dalaver H. Anjum, Pravin Raj Solomon, Jamal Hassan
Summary: The conversion of sugarcane dry leaves into graphene oxide (GO) through pyrolysis method is a feasible and eco-friendly alternative. The synthesized GO has a sheet-like structure with various oxygen-containing functional groups. The weight ratios between carbon and oxygen in the prepared GO are examined and found to be 3.35 and 38.11.
Article
Green & Sustainable Science & Technology
Dhanasekaran Vikraman, Sajjad Hussain, Tassawar Hussain, K. Karuppasamy, P. Santhoshkumar, Kyeong-Yong Kim, Ramu Manikandan, Jongwan Jung, Hyun-Seok Kim
Summary: Metal dichalcogenides have gained significant research interest recently due to their unique characteristics and wide range of applications. This study demonstrated the formation of distinctive chalcogen atoms bonded molybdenum Janus alloy structures (such as SMoTe, SMoSe, and SeMoTe) and their effectiveness as catalysts for the degradation and oxidation of dyes.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Multidisciplinary
Dhanasekaran Vikraman, Sajjad Hussain, Zeesham Abbas, K. Karuppasamy, Woo-Seok Kang, P. Santhoshkumar, A. Kathalingam, Jongwan Jung, Hyun-Seok Kim
Summary: This paper proposes a facile synthesis method for producing two-dimensional asymmetric chalcogen atoms attached to Janus nanoparticles. The fabricated materials show outstanding performance as anodes for lithium-ion batteries, with high reversible capacity and rate capability. Density functional theory approximations also confirm the significance of the interaction between asymmetric chalcogen atoms and anode materials for the battery performance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Biomedical
Anandhavelu Sanmugam, S. Abbishek, S. Logesh Kumar, Ananda Babu Sairam, Vishnu Vardhan Palem, Raju Suresh Kumar, Abdulrahman I. Almansour, Natarajan Arumugam, Dhanasekaran Vikraman
Summary: The unique characteristics of chitosan, reduced graphene oxide (rGO), and cerium oxide (CeO2) based hybrid bionano-composites make them potential biomaterials for drug delivery and antimicrobial applications. The addition of biopolymers to rGO and CeO2 based nanocomposites has shown excellent performance in various applications such as biosensors, wound dressings, electrodes, microfluidic chips, drug delivery systems, and energy storage. The physiochemical characterization of the hybrid bionano-composites revealed their crystalline structure, interaction between chitosan and rGO-CeO2, and better thermal stability up to 550 degrees C. Additionally, the nanocomposites exhibited antibacterial properties and superior cell adhesion.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Firdous Ahmad Deader, Yawar Abbas, Ahsanulhaq Qurashi, Mahmoud Al-Qutayri, Vincent Chan, Moh'd Rezeq
Summary: Nanoparticles bridge the gap between bulk materials and molecular/atomic counterparts, and their physical, optical, and electronic properties can be altered at the nanoscale. Attaining single monolayers of nanoparticles is crucial for improving the characteristics of semiconductor devices.
Article
Materials Science, Multidisciplinary
Nujud Mohammed Badawi, Khalid Mujasam Batoo, Sajjad Hussain, Namrata Agrawal, Mrutunjaya Bhuyan, Shahid Bashir, Ramesh Subramaniam, Ramesh Kasi
Summary: Efficient energy storage is a critical area of research due to the increasing energy consumption. This study focuses on improving the conductivity of cotton fabric by incorporating graphene using the Layer-by-Layer method. The graphene-treated cotton fabric exhibits good electrical conductivity and thermal stability, making it suitable for applications in smart textiles and protective clothing.
Article
Chemistry, Physical
Sikandar Aftab, Aumber Abbas, Muhammad Zahir Iqbal, Sajjad Hussain, Fahmid Kabir, Hosameldin Helmy Hegazy, Fan Xu, Jae Hong Kim, Burragoni Sravanthi Goud
Summary: Over the past decade, perovskite solar cells have made significant progress in increasing power conversion efficiency and are considered highly promising for photovoltaic technologies. However, before they can be commercialized, challenges such as lead toxicity and stability issues need to be addressed. MXene, a 2D material composed of transition metal carbides or nitrides, has shown potential for electron and hole transport in these solar cells due to its high surface area and excellent electrical conductivity. The review paper highlights the importance of MXene as both an electron and hole transport layer, suggesting its use to achieve optimal performance levels. Furthermore, MXene has been demonstrated to improve the effectiveness and stability of solar cells, making it a strong contender for high-performance solar cell development.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Sajjad Hussain, Hailiang Liu, Dhanasekaran Vikraman, Syed Hassan Abbas Jaffery, Ghazanfar Nazir, Faisal Shahzad, Khalid Mujasam Batoo, Jongwan Jung, Jungwon Kang, Hyun-Seok Kim
Summary: This work investigates the decoration of metal oxides (ZnO and Fe3O4) between MXene sheets for enhancing the performance of perovskite solar cells and X-ray detectors. The metal oxide supports provide efficient charge transfer paths and smooth surfaces for the electron transport layers. The interface engineering of MXene/ZnO and MXene/Fe3O4 hybrid ETLs leads to improved power conversion efficiencies (PCEs), which are further enhanced by blending with MXene/ZnO and MXene/Fe3O4 nanoparticles. Factors such as surface modification, interfacial interaction, roughness reduction, and charge transport improvement greatly influence the device performance. X-ray detectors with MXene/Fe3O4-modulated PCBM ETLs achieve excellent CCD-DCD, sensitivity, mobility, and trap density values.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Physical
Yewon Kim, Okhyeon Kim, Gyejun Cho, Hye-Lee Kim, Minsu Kim, Byungchul Cho, Sangjoon Park, Jongwan Jung, Won-Jun Lee
Summary: We investigated the surface reaction of thermal atomic layer etching (ALE) of Al2O3 film using fluorine radicals and trimethylaluminum (TMA). It was found that fluorine radicals increased the mass, while TMA decreased the mass. XPS analysis showed the formation of AlF3 and AlOxFy by fluorine radicals, which were removed by TMA. The etch per cycle (EPC) was fully saturated at 1.58 angstrom/cycle under specific conditions. Isotropic etching was demonstrated for Al2O3 film prepared on a trench pattern. The EPC increased with temperature, indicating the removal step determined the EPC.
APPLIED SURFACE SCIENCE
(2023)
