Article
Chemistry, Multidisciplinary
Hao-Yu Lan, Yu-Hung Hsieh, Zong-Yi Chiao, Deep Jariwala, Min-Hsiung Shih, Ta-Jen Yen, Ortwin Hess, Yu-Jung Lu
Summary: Monolayer transition metal dichalcogenides have low total absorption of photons, hindering the realization of high-performance optoelectronic functionalities. Gate-tunable plasmonic photoFETs show potential for enhancing photoresponsivity and photocurrent in monolayer MoS2, providing a systematic methodology for designing ultrathin plasmon-enhanced photodetectors for future compact optoelectronic devices.
Article
Chemistry, Physical
Qingqing Luo, Guangyuan Feng, Yaru Song, Enbing Zhang, Jiangyan Yuan, Dejuan Fa, Qisheng Sun, Shengbin Lei, Wenping Hu
Summary: In this study, a MoS2-2DPI heterojunction-based phototransistor was fabricated, which exhibited excellent near-infrared photodetection performance and a broadband wavelength response. The superior performance can be attributed to the strong near-infrared absorption and the type-II band alignment, as well as the spatial configuration of the heterostructures.
Article
Nanoscience & Nanotechnology
Zhenzhen Shen, Chunchi Zhang, Yajing Meng, Zegao Wang
Summary: The interaction between molybdenum disulfide (MoS2) and light is investigated in this study, with the aim of constructing highly integrated optoelectronics in communication and wearable healthcare. The researchers fabricate a MoS2-based phototransistor using polyvinylidene fluoride and 1-ethyl-3-methyl-imidazolium bis(trifluoromethylsulfonyeimide) ion-gel as a replacement for oxide. They find that the photoelectrical effect of the phototransistor can be greatly tuned by the gate voltage, resulting in a large tunability of carrier concentration. By tuning the carrier concentration, the photoresponse can be extended from the visible region to the short infrared region.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yexin Chen, Qinghai Zhu, Xiaodong Zhu, Yijun Sun, Zhiyuan Cheng, Jing Xu, Mingsheng Xu
Summary: In this study, a gate-tunable, high-performance, self-driving, and wide detection range phototransistor based on a 2D PtSe2 on silicon-on-insulator (SOI) was proposed. The phototransistor showed fast response time and excellent photodetection performance over a broad spectral range from ultraviolet to near-infrared.
Article
Multidisciplinary Sciences
D. Mouloua, N. S. Rajput, S. Saitzek, K. Kaja, K. Hoummada, M. El Marssi, M. A. El Khakani, M. Jouiad
Summary: This article reports on the simplified synthesis of a unique microfiber/microflower MoS2-based heterostructure using a one-step chemical vapor deposition method. The heterostructure exhibits high absorption performance over a wide spectral range, making it suitable for various photodetection applications. The integration of the MoS2/MoO2 heterostructures into functional photodetectors demonstrates significant photoresponse and high performance.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Wei Wang, Weijun Wang, You Meng, Quan Quan, Zhengxun Lai, Dengji Li, Pengshan Xie, SenPo Yip, Xiaolin Kang, Xiuming Bu, Dong Chen, Chuntai Liu, Johnny C. Ho
Summary: A gate-tunable and anti-ambipolar phototransistor based on 1D GaAsSb nanowire/2D MoS2 nanoflake mixed-dimensional van der Waals heterojunctions is reported. The device shows asymmetric control over anti-ambipolar transfer characteristics, enabling electronic functions and gate-tunability of the photoresponse. It exhibits high-performance photodetection and photovoltaic response.
Article
Materials Science, Multidisciplinary
Rui Tao, Xianlin Qu, Zegao Wang, Fang Li, Lei Yang, Jiheng Li, Dan Wang, Kun Zheng, Mingdong Dong
Summary: This study demonstrates the tunability of photoresponse and excellent photodetection capability by constructing a MoS2 homojunction. Nb doping induces p-type doping in MoS2, significantly enhancing the photoresponse and detectivity. The research not only reveals the tunable photoexcitation mechanism but also provides a strategy for achieving high-performance photodetectors.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Bor-Wei Liang, Wen-Hao Chang, Chun-Sheng Huang, You-Jia Huang, Jyun-Hong Chen, Kai-Shin Li, Kristan Bryan Simbulan, Harshvardhan Kumar, Ching-Yuan Su, Chieh-Hsiung Kuan, Yann-Wen Lan
Summary: In this study, large-scale MoS2/GaN heterojunction photodetectors were successfully fabricated using chemical vapor deposition. The photodetectors exhibited a broad photoresponse range and self-powered photoresponse characteristics. Additionally, the coverage percentage of MoS2 was found to affect the responsivity capabilities of the detectors. This facile growth technique holds potential for large-scale production in the manufacturing industry.
Article
Chemistry, Multidisciplinary
Ziyuan Li, Zahra Azimi, Zhe Li, Yang Yu, Longsibo Huang, Weiqi Jin, Hark Hoe Tan, Chennupati Jagadish, Jennifer Wong-Leung, Lan Fu
Summary: In this study, efficient photodetection of light from near-infrared to mid-wave infrared was achieved by engineering InAs nanowire arrays. By optimizing the nanowire growth temperature and V/III ratio, a high wurtzite density of about 67% was obtained in the nanowire arrays. Due to the formation of a p-n junction, the nanowire arrays exhibited an ultrawide room-temperature photoresponse ranging from 500 to 3500 nm under zero bias. The nanowire arrays also showed high responsivity and detectivity at a relatively high operating temperature of 150 K. This research demonstrates the potential of InAs nanowire arrays for the development of high-performance ultra-broadband infrared photodetectors for wavelengths ranging from NIR to MWIR.
Article
Nanoscience & Nanotechnology
Chulyeon Lee, Hwajeong Kim, Youngkyoo Kim
Summary: In this study, a novel polymer, PolyTPD, doped with BCF was found to exhibit broad optical absorption peaks in the short-wave infrared range with varying BCF molar ratios. The doping of PolyTPD with BCF resulted in the generation of radicals and a shift in the energy levels, leading to enhanced sensitivity for SWIR light detection. The optimized SWIR-OPTRs utilizing PolyTPD:BCF GSLs demonstrated high photoresponsivities for SWIR light detection.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Sandhyarani Sahoo, Mousam Charan Sahu, Sameer Kumar Mallik, Anjan Kumar Jena, Gopal K. Pradhan, Satyaprakash Sahoo
Summary: Two-dimensional transition metal dichalcogenides have attracted attention in optoelectronic devices due to enhanced photoresponsivity and tunable band gap. A method to control carrier trapping in monolayer MoS2 is proposed, resulting in high-responsive low-power photodetection. By implementing gate bias as pulses, the photogating and photoconductive effects are simultaneously enhanced, leading to a large photoresponsivity and high photo gain. Additionally, the gate-tunable photoresponse is demonstrated with negative gate bias stress. These findings suggest the potential for developing highly responsive low-power photodetectors.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Vaishnavi Krishnamurthi, Mei Xian Low, Sruthi Kuriakose, Sharath Sriram, Madhu Bhaskaran, Sumeet Walia
Summary: The research explores the strategy of combining p-type and n-type 2D materials to form versatile p-n junctions, and demonstrates the photodetection capabilities of heterostructures formed from black phosphorus and molybdenum disulfide across a UV-vis wavelength range.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Mukul Bhatnagar, Matteo Gardella, Maria Caterina Giordano, Debasree Chowdhury, Carlo Mennucci, Andrea Mazzanti, Giuseppe Della Valle, Christian Martella, Pinakapani Tummala, Alessio Lamperti, Alessandro Molle, Francesco Buatier de Mongeot
Summary: This study demonstrates the nano-fabrication of flat optic silica gratings layered with 2D MoS2 over a large area, achieving a strong enhancement of photon absorption. By exciting Guided Mode Anomalies (GMA), resonant and nonresonant light can be strongly confined to the 2D MoS2 layers, resulting in absorption enhancement. These large area 2D MoS2 metastructures have broadband and tunable photon harvesting capabilities, making them ideal for new generation devices in nanophotonics, photo-detection, conversion, and quantum technologies.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Xiao-Xi Li, Xin-Yu Chen, Jin-Xin Chen, Guang Zeng, Yu-Chun Li, Wei Huang, Zhi-Gang Ji, David Wei Zhang, Hong-Liang Lu
Summary: An asymmetric dual-gate MoS2 field-effect transistor with ultrahigh electrical performance and optical responsivity using HfO2 as a top-gate dielectric was fabricated and investigated. The device exhibited outstanding electrical performance and a large threshold voltage modulation range in a DG MoS2 phototransistor. The ultrahigh photoresponsivity demonstrated in the study indicated promising opportunities for optoelectronic device applications.
Article
Materials Science, Multidisciplinary
Minji Kim, Garam Bae, Kyeong Nam Kim, Hyeong-ku Jo, Da Som Song, Seulgi Ji, Dohyun Jeon, Semin Ko, Seon Joo Lee, Sungho Choi, Soonmin Yim, Wooseok Song, Sung Myung, Dae Ho Yoon, Ki-Seok An, Sun Sook Lee
Summary: In this study, we demonstrated all-solution processed broadband photodetectors based on wafer-scale PQDs/MoS2 through light management via the monochromatization effect of the PQDs. This intriguing strategy enhanced the photoresponse in the UV region and exhibited superb air stability and exceptional bending durability.
NPG ASIA MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Zhenzhen Shen, Chunchi Zhang, Yajing Meng, Zegao Wang
Summary: The interaction between molybdenum disulfide (MoS2) and light is investigated in this study, with the aim of constructing highly integrated optoelectronics in communication and wearable healthcare. The researchers fabricate a MoS2-based phototransistor using polyvinylidene fluoride and 1-ethyl-3-methyl-imidazolium bis(trifluoromethylsulfonyeimide) ion-gel as a replacement for oxide. They find that the photoelectrical effect of the phototransistor can be greatly tuned by the gate voltage, resulting in a large tunability of carrier concentration. By tuning the carrier concentration, the photoresponse can be extended from the visible region to the short infrared region.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Biophysics
Xiaoteng Liang, Yin Wang, Jie Song, Dan Xia, Qiang Li, Mingdong Dong
Summary: Silicene nanosheets (SNSs) activated by near-infrared (NIR) have been identified as an effective agent for disassembling A beta(33-42) aggregates. This study provides new insights into potential therapeutic strategies for Alzheimer's disease and related neurodegenerative diseases.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Rui Tao, Xianlin Qu, Zegao Wang, Fang Li, Lei Yang, Jiheng Li, Dan Wang, Kun Zheng, Mingdong Dong
Summary: This study demonstrates the tunability of photoresponse and excellent photodetection capability by constructing a MoS2 homojunction. Nb doping induces p-type doping in MoS2, significantly enhancing the photoresponse and detectivity. The research not only reveals the tunable photoexcitation mechanism but also provides a strategy for achieving high-performance photodetectors.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Zibo Li, Qian Liu, Qiang Li, Mingdong Dong
Summary: This study investigates the lubrication effect of hydrated halogen anions on positively charged surfaces using atomic force microscopy and friction force microscopy. The results show that the mechanical properties of the hydration layers depend on the concentration of electrolyte solutions, and the friction coefficient and friction dissipation are significantly lower at low concentrations. Superlubricity can be achieved in low concentration electrolyte solution. These findings provide insights into the origins of hydration lubrication.
Article
Chemistry, Multidisciplinary
Ziwei Su, Xiangxiang Zhang, Weichen Wang, Mingdong Dong, Xiaojun Han
Summary: This study demonstrates an efficient way to build self-powered artificial cells containing thylakoids that convert light energy into chemical energy to supply ATP. The generated ATP and NADPH can be used in promoting biological enzyme cascade reactions and provide a pathway for building more complex artificial cells.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Zhihao Yang, Dong Wang, Shaoyuan Wang, Chao Tan, Lei Yang, Zegao Wang
Summary: This study investigates the memory effect in 2D mica/WSe2 heterostructure and finds that memory function can be achieved by trapping K+ ions in mica under applying constant bias voltage and gate voltage. The WSe2 channel can be electrostatically doped by gradient K+ ions. The device performance can be finely tuned by the programming process, as the trapped charge is proportional to the charge flowing through the channel.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Shaoyuan Wang, Zhihao Yang, Dong Wang, Chao Tan, Lei Yang, Zegao Wang
Summary: The study investigates the intensity- and polarization-sensitive photo-detection based on α-In2Se3, a 2D material. It is found that α-In2Se3 shows a strong photoelectric performance and polarization-sensitive detection, providing new opportunities for future dual-mode photodetection.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Thermodynamics
Botao Zhang, Shengjie Gong, Shichang Dong, Zhenqin Xiong, Qiang Guo
Summary: Boiling-induced vibration characteristics and mechanisms were investigated in pool boiling experiments. Turbulence and bubble collapse were identified as the two main mechanisms causing vibration. The peak amplitude of the first natural frequency increased with increasing heat flux and decreasing subcooling degree for turbulence-induced vibration. The peak amplitude of the second natural frequency increased with increasing heat flux for a certain subcooled temperature above 10 degrees C, and remained stable for lower subcooled temperatures. The dominant mechanism transitioned from bubble collapse to turbulence with decreasing subcooled temperature for a certain heat flux. The highest root-mean-square (RMS) value of vibration velocity corresponded to an increasing subcooled temperature with increasing heat flux.
APPLIED THERMAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Zhenghan Peng, Xiai Luo, Kexin Liang, Chao Tan, Libin Gao, Zegao Wang
Summary: A MoS2 memristor is fabricated on an oxygen-vacancy-rich Bi1.5MgNb1.5O7 thin film to study its photosensing property, which shows tunable hysteresis behavior and voltage-dependent photosensing-memory performance. The interfacial enhanced photosensing mechanism of the MoS2 device is revealed, providing a new way to enhance memristor performance.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Physics, Applied
Zheng-Dong Shui, Shaoyuan Wang, Zhihao Yang, Dong Wang, Bang-Zhou Tian, Siyuan Luo, Zegao Wang, Lei Yang
Summary: This article introduces a self-powered near-infrared detector that can work without an external power source, which has important applications in various fields. A self-powered near-infrared detector with a metal-semiconductor-metal structure was fabricated by attaching a hydrothermal synthesized Te microwire to Ti electrodes. Under 1550 nm illumination, the detector exhibits a responsivity of 3.47 x 10(5) V/W and 170 mA/W and a detectivity of 4 x 10(9) Jones at room temperature. The competitive performance is attributed to the asymmetric Schottky barrier-induced built-in electric fields. The highly anisotropic structure of the Te microwire allows the device to achieve a polarization dichroic ratio of up to 2.1 under 1550 nm irradiation. This work provides a simple strategy for realizing polarization-sensitive self-powered near-infrared detection in a wide temperature range.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Yu Liu, Yutong Jiang, Chao Tan, Youren Li, Yu Chen, Zhengyang Li, Liangjuan Gao, Lei Yang, Zegao Wang
Summary: A strain tunable suspended MoS2 phototransistor with a cavity in the channel is fabricated for in situ modulation of MoS2 structure and breaking its isotopic optical property. The strain in MoS2 can be tuned up to 0.598% by changing environment pressure, leading to significant changes in electrical and photoelectrical properties. The coupling effect between light and strain is demonstrated, and the symmetric photoelectrical property of MoS2 is broken at a pressure of 60 kPa, resulting in polarization detection with a dichroic ratio of 1.38.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Rongrong Wu, Zengkai Wang, Zili Jia, Chenglong Li, Jie Wang, Lei Liu, Mingdong Dong
Summary: This study investigates the cross-fibrillation of A beta peptides and different hIAPP structures. The experimental results show that hIAPP aggregates enhance the fibrillation of A beta, especially hIAPP fibrils. Using quantitative nanomechanical mapping and molecular dynamic simulations, different hybrid amyloid strains can be distinguished based on their mechanical properties and structural transformations.
Article
Multidisciplinary Sciences
Steven J. Roeters, Kris Strunge, Kasper B. Pedersen, Thaddeus W. Golbek, Mikkel Bregnhoj, Yuge Zhang, Yin Wang, Mingdong Dong, Janni Nielsen, Daniel E. Otzen, Birgit Schiott, Tobias Weidner
Summary: This study reports a mechanism explaining why lipid membranes catalyze the formation of harmful aggregates at elevated concentrations.
NATURE COMMUNICATIONS
(2023)
Review
Energy & Fuels
Lan Liu, Xin Wang, Zegao Wang
Summary: As the global climate crisis worsens, ecosystems, human society, and economic activities are being heavily impacted. The Chinese government has proposed the goal of reaching carbon peak by 2030 and achieving carbon neutrality by 2060. China, as the world's largest developing country, manufacturer, and with the most diverse industries, faces multiple challenges such as climate change, economic transition, and environmental protection, which require comprehensive support in policy, economy, technology, and society. Policy planning and technological innovation are crucial for achieving the dual carbon goals, followed by industrial adjustment and enterprise implementation.
GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
(2023)