Article
Chemistry, Physical
Nahong Song, Yusheng Wang, Zeming Yuan, Fei Wang
Summary: In this study, density functional theory simulations were used to investigate the properties of the AlN@BSe vertical heterostructure. The results show that the AlN@BSe is mechanically stable and has improved in-plane stiffness compared to pure BSe and AlN monolayers. It exhibits strong infrared light absorption and can undergo band gap transitions under certain conditions. The diverse electronic properties make it highly promising for novel nano-electronic applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Anthony Kipkorir, Jeffrey DuBose, Junsang Cho, Prashant Kamat
Summary: The synthesis of CsPbBr3-CdS heterostructures has improved stability and photocatalytic performance by providing solvent stability with CdS deposition. The heterostructure exhibits longer emission lifetime and surface defect passivation compared to pristine CsPbBr3. Excited state interactions and interfacial electron transfer were elucidated using ethyl viologen as a probe molecule in toluene/ethanol mixed solvent, revealing a high electron transfer rate constant and quantum efficiency under visible light excitation. Insights into the effective utilization of perovskite nanocrystals in quasi-type II heterostructures pave the way for their application in photocatalytic reduction and oxidation processes.
Article
Materials Science, Multidisciplinary
Yiqiang Zheng, Yaowen Wang, Zhexin Li, Zeyu Yuan, Songyang Guo, Zheng Lou, Wei Han, Guozhen Shen, Lili Wang
Summary: This study utilized Ti3C2Tx quantum dots (TQDs) to enhance charge carriers of 2D perovskite Ca2Nb3O10 (CNO) nano -sheet (NS) layers, resulting in a 1,100% increase in spectral responsivity in the TQD-modified 2D perovskite CNO NS photodetector compared to the reference. The flexible TQD/CNO photodetector was integrated with a data collector to create a wearable visible-blind UV monitoring system for skin and plant protection. Artificial neural network was used to train and recognize ambient UV radiation information for alerting users. This work demonstrates the potential applications of TQD/CNO in UV-related wearable healthcare and control systems.
Article
Chemistry, Physical
Laura M. Jacoby, Matthew J. Crane, Daniel R. Gamelin
Summary: This research discovers the potential application of vapor-deposited CsPbBr3 thin films in optoelectronic and spin-based devices. Both photogenerated holes and electrons show coherent spin precession, but the spin dephasing time of photogenerated electrons is shorter.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Dongguen Shin, Fengshuo Zu, Edgar R. Nandayapa, Lennart Frohloff, Emily Albert, Emil J. W. List-Kratochvil, Norbert Koch
Summary: In this study, it is revealed that a straddling type-I energy level alignment is present at the 2D PEA(2)PbI(4)/3D MAPbI(3) interfaces, explaining the enhanced photoluminescence of the 3D perovskite induced by energy transfer from the 2D perovskite. These results provide a fundamental understanding of the electronic properties at the investigated 2D/3D MHP interfaces and suggest reconsideration of the electronic properties of other 2D/3D MHP heterostructures.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
R. Garza-Hernandez, H. J. Edwards, J. T. Gibbon, M. R. Alfaro-Cruz, V. R. Dhanak, F. S. Aguirre-Tostado
Summary: Cu2SnS3 thin films were synthesized using two different routes in an aprotic media. Controlling the sulfurization temperature allowed for the presence of diverse crystalline structures of Cu2SnS3. XPS measurements confirmed the presence of Sn4+ and Cu+ species, while bandgap values varied with different crystal phases. The films showed photoconductive properties, making them a potential option for solar applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Hameed Ullah, Altaf Ur Rahman, Erhon Leonetti Aragao, Fernanda Frois Alves Barbosa, Kevin Gabriel Ramisch Pergher, Raquel Giulian, Horacio Coelho Junior, Rubem Luis Sommer, Sherdil Khan
Summary: Anodic elemental incorporation in TiO2 nanotubes mainly results in the formation of a commensurate heterostructure of TiO2/V2O5. The properties such as bandgap and charge transfer remain unchanged, and the photoelectrochemical experiments show different photocurrent characteristics.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Edoardo Fertitta, Sujit Das, Debalina Banerjee, Farbod Ebrahimi, Clement Barraud, Kai Du, He Tian, Chris J. Pickard, Cedric Weber, Ramamoorthy Ramesh, Peter Littlewood, David Dubbink
Summary: The study focuses on the characterization of double perovskite oxides La2TiFeO6 and La2VCuO6, exploring B-site disorder and partial charge transfer between B-site ions. Utilizing random structure sampling method, multiple phases competing due to their configurational entropy were identified. Evaluation of information encapsulated in potential energy landscape via structure sampling optimized the metric for competition of different phases.
NPJ COMPUTATIONAL MATERIALS
(2021)
Article
Physics, Multidisciplinary
Huili Zhu, Zifan Hong, Changjie Zhou, Qihui Wu, Tongchang Zheng, Lan Yang, Shuqiong Lan, Weifeng Yang
Summary: The interfacial properties of MoS2/4H-SiC heterostructures were studied, and it was found that the valence band offsets increased with increasing MoS2 layer. A strong interlayer interaction was revealed at the 1L MoS2/SiC interface, while Fermi level pinning and surface passivation were achieved at the 4H-SiC (0001) surface. In multilayer MoS2, weak vdW interaction and strong interlayer orbital coupling resulted in type II band alignment and enlarged CBOs and VBOs, while in 1L MoS2/SiC, type I band alignment and asymmetric CBO and VBO were observed.
FRONTIERS OF PHYSICS
(2023)
Article
Chemistry, Physical
Yuzheng Lu, Muhammad Akbar, Junjiao Li, Ligang Ma, Baoyuan Wang, Chen Xia
Summary: Recent advances have shown a promising p-n heterostructure strategy for developing highly ionic conducting electrolytes for LT-SOFCs. In this study, a p-n-n heterostructure approach is proposed using NCAL, ZnO, and SnO2, resulting in a desirable heterostructure with high performance. The mass ratios of p/n phases significantly impact the conductivity and fuel cell performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Condensed Matter
A. Mandal, S. K. Adhi, B. P. Joshi, S. D. Shinde, A. G. Banpurkar, A. V. Limaye, K. P. Adhi, T. Sant, S. M. Jejurikar
Summary: Highly c-axis oriented, single-phase praseodymium doped ZnO thin films were deposited on cAl(2)O(3) substrate under different oxygen pressure conditions. Photoluminescence and X-ray photoelectron emission studies revealed the emission of Pr3+ ions and observed different transitions of Pr3+ ions.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Engineering, Electrical & Electronic
R. K. Kalaiezhily, V. Jayaseelan, K. Kamala Bharathi, M. Navaneethan, Senthil Kumar Eswaran
Summary: This study reports the fabrication of Nb-doped SrTiO3 thin films of various thicknesses using pulsed laser deposition, and reveals changes in crystallinity and band gap with thickness. Additionally, impedance spectroscopy shows an increase in dc conductivity with temperature, indicating thermal activation of niobium donors in the films.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Energy & Fuels
Fengshuo Zu, Marcel Ross, Lennart Frohloff, Dongguen Shin, Nir Tessler, Steve Albrecht, Norbert Koch
Summary: Tremendous progress has been made in utilizing metal halide perovskites (MHPs) in various applications, particularly in photovoltaics, in the past decade. To fully realize the potential of MHP materials in optoelectronic devices, a better understanding of the electronic energy level alignment at perovskite-based interfaces is required, especially under device operation conditions.
Article
Nanoscience & Nanotechnology
Huabin Zhou, Haojie Lai, Xiao Sun, Ning Zhang, Yuee Wang, Pengyi Liu, Yang Zhou, Weiguang Xie
Summary: Researchers have developed a van der Waals heterostructure composed of few-layer 2D perovskite/MoS2 nanoflakes, which exhibits high-sensitivity detection performance over a broad spectral region, including the near-infrared wavelength. The sensitive and ultrafast photoresponse at the near-infrared wavelength is attributed to the strong interlayer transition of sub-band-gap photons and the rapid separation of photogenerated carriers.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Shuai Lan, Saemon Yoon, Hae-Jun Seok, Hyeon Uk Ha, Dong-Won Kang, Han-Ki Kim
Summary: By fabricating flexible amorphous transparent V-doped In-Zn-O (IZVO) thin films at room temperature, the formation of oxygen vacancies was effectively suppressed, resulting in excellent electrical and optical properties. The IZVO electrode demonstrated superior performance in flexible perovskite solar cells, showing great potential for highly efficient flexible photovoltaic applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Yi Wei, Wei Wang, Zhennan Wang, Hang Yang, Xinyu You, Yunna Zhao, Peipei Dang, Hongzhou Lian, Jianhua Hao, Guogang Li, Jun Lin
Summary: This review highlights the applications and properties of Bi3+-included lead-free metal halide materials in the field of optoelectronics, with a focus on the role and impact of Bi3+ ions in LFMH materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Biophysics
Menglin Song, Man-Chung Wong, Lihua Li, Feng Guo, Yuan Liu, Yingjing Ma, Xinyue Lao, Pui Wang, Honglin Chen, Mo Yang, Jianhua Hao
Summary: We have developed a point-of-care upconversion luminescence diagnostics (PULD) method combined with a streamlined smartphone-based portable platform for rapid testing of the SARS-CoV-2 nucleocapsid (N) gene. This method demonstrates high sensitivity and signal-to-noise ratio, and can accurately identify positive COVID-19 samples.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Physical
Fumei Yang, Man-Chung Wong, Jianfeng Mao, Zehan Wu, Jianhua Hao
Summary: In this study, high-quality multilayer SnSe nanosheets were synthesized by chemical vapor deposition and their piezoelectric properties were investigated. The results showed that SnSe nanosheets have high single-crystallinity and strong layer-dependent piezoelectric coefficient, allowing for high energy conversion efficiency and maximum power density. Based on this study, a self-powered sensor for human motion monitoring was developed.
Article
Nanoscience & Nanotechnology
Wei Han, Xiaodong Zheng, Ke Yang, Chi Shing Tsang, Fangyuan Zheng, Lok Wing Wong, Ka Hei Lai, Tiefeng Yang, Qi Wei, Mingjie Li, Weng Fu Io, Feng Guo, Yuan Cai, Ning Wang, Jianhua Hao, Shu Ping Lau, Chun-Sing Lee, Thuc Hue Ly, Ming Yang, Jiong Zhao
Summary: Large-scale 2D beta-In2Se3 films and alpha-In2Se3 films were successfully grown by chemical vapor deposition, and a complete phase transition enabled the obtainment of a full spectrum of paraelectric, ferroelectric and antiferroelectric 2D films.
NATURE NANOTECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Shuo Shi, Yifan Si, Zihua Li, Shuo Meng, Shuai Zhang, Hanbai Wu, Chuanwei Zhi, Weng-Fu Io, Yang Ming, Dong Wang, Bin Fei, Haitao Huang, Jianhua Hao, Jinlian Hu
Summary: Developing intelligent wearable protection systems is highly important for human health engineering. We have developed an intelligent wearable filtration system (IWFS) using advanced nanotechnology and machine learning, which exhibits reliable filtration efficiency, low pressure drop, healthcare monitoring function, and man-machine interactive capability. The IWFS has a high particle filtration efficiency of 99%, bacteria protection efficiency of 100%, and low-pressure drop of 5.8 mmH2O. It also possesses healthcare monitoring function and man-machine interactive capability, enabling real-time data collection and voice command transmission.
Article
Physics, Applied
Yuqian Zhao, Feng Guo, Sin-Yi Pang, Weng Fu Io, Lok-Wing Wong, Jiong Zhao, Jianhua Hao
Summary: The anisotropic Raman response of ultrathin black phosphorus (BP) transferred to an oxide dielectric substrate is investigated by utilizing a piezoelectric actuator to perform biaxial strain engineering. The strained Raman response is related to the variations of bond angle and bond length in BP, and biaxial strain modulation can change the anisotropic dispersion of BP.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Zhaoying Dang, Feng Guo, Huan Duan, Qiyue Zhao, Yuxiang Fu, Wenjing Jie, Kui Jin, Jianhua Hao
Summary: In this study, ferroelectric-tuned synaptic transistors were designed by integrating 2D black phosphorus with a flexible ferroelectric copolymer. These transistors exhibited high mobility, low energy consumption, and reliable synaptic behaviors, such as paired-pulse facilitation and long-term depression/potentiation. Furthermore, an artificial neural network was successfully simulated for handwritten digit recognition with a high accuracy of 93.6%. These findings highlight the potential of 2D ferroelectric field-effect transistors as ideal building blocks for high-performance neuromorphic networks.
Review
Chemistry, Multidisciplinary
Haoran Li, Zhibin Yang
Summary: The emergence of phosphorene has led to significant interest in 2D group VA nanomaterials. Bismuthene, among this group, shows layer-dependent direct bandgaps, high carrier mobility, and topological insulator properties due to its unique structure and ultrathin nature, making it a promising candidate for photonic applications. Its outstanding stability in air also gives it an advantage over phosphorene. This comprehensive review focuses on the synthesis methods and photonic applications of 2D bismuth, discussing its structure, properties, synthesis approaches, and various photonic devices.
APPLIED SCIENCES-BASEL
(2023)
Article
Nanoscience & Nanotechnology
Lihua Li, Zefeng Lin, Xingyi Xu, Wanshun Wang, Hu Chen, Zhibin Feng, Zhongmin Yang, Jianhua Hao
Summary: Nanozymes have been developed for disease theranostics, and in this study, BDS-GOx@MnOx nanozymes based on a bismuth-manganese core-shell nanoflower were designed for tumor theranostics. These nanozymes showed enhanced starvation treatment and chemotherapy efficacy, and could also be used for tumor-enhanced CT and MR imaging. The characterization and mechanism of the BDS-GOx@MnOx nanozymes were systematically studied and revealed.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Hanbai Wu, Shuo Shi, Huiqun Zhou, Chuanwei Zhi, Shuo Meng, Weng-Fu Io, Yang Ming, Yuchao Wang, Leqi Lei, Bin Fei, Jianhua Hao, Jinlian Hu
Summary: This study utilized electrospinning technology to fabricate bone-mimicking microenvironments and demonstrated that stem cells can autonomously regulate their differentiation by remodeling the cytoskeleton. Aligned and random nanofibers had different effects on the osteogenic ability and calcium activity of stem cells, with random nanofibers showing better osteogenesis.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Editorial Material
Physics, Applied
Hong Wang, Jianhua Hao, Qing Wang
Summary: Functional dielectrics are materials with interesting electro-active behaviors, such as variable permittivity, high breakdown strength, ferroelectricity, piezoelectricity, and pyroelectricity. They have the ability to generate and respond to electric fields in a nonlinear manner, making them highly desirable for energy conversion and storage applications.
APPLIED PHYSICS LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Lihua Li, Zefeng Lin, Xingyi Xu, Wanshun Wang, Hu Chen, Zhibin Feng, Zhongmin Yang, Jianhua Hao
Summary: A self-enhanced catalytic nanocrystal BDS-GOx@MnOx based on a bismuth-manganese core-shell nanoflower was designed for 4T1 tumor theranostics in vitro and in vivo. The BDS-GOx@MnOx nanozymes enable enhanced starvation treatment (ST) and chemotherapy (CDT) with high efficacy and exhibit sensitive tumor microenvironment (TME) responsive character for tumor therapy as well as for tumor-enhanced computer tomography (CT) and magnetic resonance (MR) diagnostic imaging.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Wei Xu, Hongzhen Liu, Man-Chung Wong, Huimin He, Jianhua Hao, Lizhi Xu
Summary: The researchers have used a mechanically strong and mildly healable polymer (THP) as the key material for triboelectric nanogenerators (TENGs). THP is based on polyurethane-urea containing coordinate bonds, and its healing can be triggered by simply wetting the breakage area. The THP-TENGs exhibit high enough robustness to withstand mechanical loading and excellent healability for recovering device functionalities after mechanical damage.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Correction
Materials Science, Biomaterials
Zhigao Yi, Xiaolong Li, Wei Lu, Hongrong Liu, Songjun Zeng, Jianhua Hao
Summary: This article introduces a method using hybrid lanthanide nanoparticles as contrast agents to achieve T-1/T-2 dual-weighted MRI and synergistic tumor diagnosis.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Chemistry, Multidisciplinary
Qin Zhang, Bohan Yin, Jianhua Hao, Linjie Ma, Yingying Huang, Xueying Shao, Chuanqi Li, Zhiqin Chu, Changqing Yi, Siu Hong Dexter Wong, Mo Yang
Summary: A highly sequence-specific biosensor based on nanocomposites has been developed for one step-detection of SARS-CoV-2-specific nucleic acid sequences. The method is rapid, inexpensive, and sensitive, with detection completed within 1 hour without amplification.
