Article
Chemistry, Physical
Wei-Zhi Song, Hui-Jing Qiu, Jun Zhang, Miao Yu, Seeram Ramakrishna, Zhong Lin Wang, Yun-Ze Long
Summary: The new designed DC-TENG utilizes two conductors with different electron-obtaining abilities as electrodes, allowing electrons to continuously transfer within the triboelectric layer for unidirectional electron flow. The rotation mode achieves a constant DC output and successfully drives small electronic devices.
Article
Chemistry, Multidisciplinary
Zhaozheng Wang, Zhi Zhang, Yunkang Chen, Likun Gong, Sicheng Dong, Han Zhou, Yuan Lin, Yi Lv, Guoxu Liu, Chi Zhang
Summary: This research proposes a semiconductor DC triboelectric nanogenerator (SDC-TENG) using gallium nitride/silicon (GaN/Si) heterojunction, which has ultrahigh voltage and power density. The SDC-TENG can maintain high output voltage at different speeds, has great durability, and performs significantly better than traditional polymer TENGs.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Renwei Cheng, Kai Dong, Pengfei Chen, Chuan Ning, Xiao Peng, Yihan Zhang, Di Liu, Zhong Lin Wang
Summary: This study developed a lightweight, highly flexible fabric-based direct current TENG with high power output, by coating two electrodes on a polyester-cotton fabric. Various structural parameters and environmental factors were explored to enhance the understanding of the fabric-based TENG, which can efficiently harvest surface charges induced by triboelectrification. This innovation presents a potential shift in the development of high output direct current power fabrics for wearable electronics.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Multidisciplinary Sciences
Md. Sherajul Islam, Md. Yasir Zamil, Md. Rayid Hasan Mojumder, Catherine Stampfl, Jeongwon Park
Summary: This study investigated the tribo-piezoelectric properties of 2D-indium nitride through first-principles calculations, revealing a strong vertical piezoelectric effect during in-plane interlayer sliding, leading to the generation of tribo-biological energy. The A-A stacking of bilayer InN was found to exhibit the highest out-of-plane piezoelectricity, with a proposed nanogenerator model capable of producing a maximum output power density of around 73 mWcm(-2) during vertical sliding.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Xin Pan, Huijing Xiang, Ziwei Xuan, Yang Jie, Xia Cao
Summary: This study presents a direct current triboelectric nanogenerator (DC-TENG) with a metal-polymer-semiconductor interface and a dynamic Al/PVP/Si heterojunction, which achieves higher voltage output by increasing the surface state density of silicon. The DC-TENG can be used in self-powered electronic devices and self-powered sensing applications by introducing conventional dielectric polymer materials.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Jianfeng Sun, Lingjun Zhang, Siqi Gong, Jie Chen, Hengyu Guo
Summary: Electronically controlled droplet manipulation has widespread applications, but current technologies are inefficient. A novel method leveraging tribo-electrophoresis (TEP) and a triboelectric nanogenerator-electrostatic tweezer is proposed, allowing efficient human-droplet interactions solely through hand motion.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Wenjian Li, Liqiang Lu, Feng Yan, George Palasantzas, Katja Loos, Yutao Pei
Summary: This study utilizes fragile and rigid mica to improve the performance of triboelectric nanogenerators (TENGs). By exfoliating mica into 2D nanosheets and electrospinning them into flexible thermoplastic polyurethane (TPU) nanofibers, the transferred charge of the TENG significantly increases. The mica also enhances the positive electrostatic surface potential (ESP) of TPU, leading to a higher power density in the TENG.
Article
Chemistry, Physical
Jia Meng, Zi Hao Guo, Chongxiang Pan, Luyao Wang, Caiyun Chang, Longwei Li, Xiong Pu, Zhong Lin Wang
Summary: A flexible textile-based DC generator utilizing the tribovoltaic effect has been developed, which can efficiently harvest mechanical energies to power self-powered wearable electronics. The generator is based on the dynamic Schottky junction between an Al slider and a poly(3,4-ethylenedioxythiophene)-coated textile, providing a voltage output of approximately 0.45-0.70 V. Connecting multiple generators in series can increase the voltage and current output, demonstrating the potential for continuous power supply to electronic devices without the need for conditioning circuits.
ACS ENERGY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Lin Shi, Vinayak S. S. Kale, Zhengnan Tian, Xiangming Xu, Yongjiu Lei, Sharath Kandambeth, Yizhou Wang, Prakash T. T. Parvatkar, Osama Shekhah, Mohamed Eddaoudi, Husam N. N. Alshareef
Summary: With the increasing application of intelligent electronics, the triboelectric nanogenerator (TENG) has gained attention as a sustainable micro-power source. However, most research on TENGs focuses on negative triboelectric materials, limiting the exploration of positive tribo-layers. This study successfully synthesized a new highly fluorinated covalent organic framework (COF) Tp-TFAB and utilized it as positive triboelectric materials, demonstrating enhanced triboelectric performance in TENGs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Guangda Qiao, Jianlong Wang, Xin Yu, Rong Jia, Tinghai Cheng, Zhong Lin Wang
Summary: A bidirectional direct current triboelectric nanogenerator (BD-TENG) is proposed in this research, which can convert AC output into DC output without a bridge rectifier. It is comprised of a mechanical structure component, a triboelectric power-generation unit, and a mechanical rectifier, and is capable of illuminating 210 LEDs and powering a commercial calculator directly.
Review
Materials Science, Multidisciplinary
Songlin Zhang, Michael Bick, Xiao Xiao, Guorui Chen, Ardo Nashalian, Jun Chen
Summary: Global interest in wearable bioelectronics for monitoring human health status is rising, especially with the emergence of new diseases. While using wearable devices for personal health monitoring is becoming popular, finding practical healthcare solutions is becoming increasingly challenging with an aging population. Triboelectric nanogenerators show promise for sustainable power sources, active biomonitors, and electrical stimulation therapeutics in bioengineering applications, but there are challenges that need to be addressed in leveraging them for personalized healthcare.
Article
Chemistry, Multidisciplinary
Weixiang Sun, Di Yang, Ning Luo, Hao Li, Daoai Wang
Summary: With the development of a new self-powered fabric composition detection system from F-TENGs modified by different functional groups, this research successfully integrated the power unit and group analysis system into one device, providing tremendous application potential for collecting human motion energy and detecting group types.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
Zhike Xia, Pei-Yong Feng, Xin Jing, Heng Li, Hao-Yang Mi, Yuejun Liu
Summary: In this study, the design and optimization principles of sliding mode TENGs were investigated by analyzing the effects of spring parameters and vibration frequency on the triboelectric output performance of CS-TENGs. The energy output of the TENG was found to be mainly affected by the change in relative displacement between the two friction layers, rather than the reactive force applied by the springs or the velocity of the sliding motion. However, the frequency of the output signals could be improved by increasing the stiffness coefficient of the springs and the CS-TENG vibration frequency.
Article
Chemistry, Multidisciplinary
Yuan Liu, Wenjie Yan, Jiajia Han, Baodong Chen, Zhong Lin Wang
Summary: In this study, an aerodynamics-based triboelectric nanogenerator (AB-TENG) is developed by combining it with a propeller and rotor, which can automatically switch between contact and separation mode. The AB-TENG demonstrates high electrical stability and durability, with a separation speed of 150 rpm and maintaining 95.18% electrical output after 1.378 million cycles. With a power management circuit, it can quickly charge capacitors and power various electronic devices.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yang Zheng, Tong Liu, Junpeng Wu, Tiantian Xu, Xiandi Wang, Xun Han, Hongzhi Cui, Xiaofeng Xu, Caofeng Pan, Xiaoyi Li
Summary: This paper presents a quantitative analysis method called the KECCI method, which significantly improves the understanding of the mechanical-to-electrical energy conversion process. A high-performance TENG is developed based on this method, and a multilayered TENG device is proposed for further improvement in energy conversion efficiency. Furthermore, the integration of multilayered TENGs with organic photovoltaics enables all-weather energy harvesting.
ADVANCED MATERIALS
(2022)
Review
Physics, Applied
Yang Xiang, Xindi Mo, Xing Li, Keqing Huang, Pei He, Guozhang Dai, Junliang Yang
Summary: This review systematically summarizes the growth of metal halide perovskite thin films and nano-/microstructures by vapor-phase synthesis. It introduces the classification of vapor-phase synthesis and discusses the effects of substrates on the growth process. The applications of perovskite thin films and nano-/microstructures grown by vapor-phase synthesis in optoelectronic devices are also discussed in detail.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Physics, Condensed Matter
Cheng-Sheng Liao, Biao Liu, Jun-Liang Yang, Meng-Qiu Cai
Summary: In this study, we investigated the geometric and electronic structures of PtSe2/Cs2PbI4 heterostructure and found that its electronic properties can be tuned by adjusting the layer number and external strains. The heterostructure based on Cs2PbI4 monolayer and PtSe2 monolayer showed a type-II band alignment, which is suitable for photovoltaic applications. Increasing the layer number of PtSe2 in the heterostructure switched the band alignment from type-II to type-I, making it beneficial for luminescence device applications. However, further increasing the thickness of PtSe2 to trilayer resulted in a metallic characteristic with a p-type Schottky barrier. Furthermore, we found that strain engineering can effectively tune the electronic properties of PtSe2/Cs2PbI4 heterostructures with different thickness. These findings highlight the potential of PtSe2/Cs2PbI4 heterostructure as a tunable hybrid material for multi-functional applications.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Optics
Xiaolu Hu, Quanlong Yang, Lingli Ba, Junliang Yang
Summary: Near-perfect light harvesting can be achieved with a metasurface-based absorber, which has numerous potential applications in sensing, cloaking, and photovoltaics. In this study, a reconfigurable perfect absorber based on a MoTe2 hybrid metasurface at terahertz frequency is presented. The optical response of the metasurface-based absorber shows a reconfigurable switching from dual-frequency perfect absorption to a new single-frequency absorption when illuminated by light. The absorption mechanism of the hybrid metasurface is well demonstrated with the analytical coupled-dipole model and impedance analysis. The proposed reconfigurable THz meta-absorber provides a new route for active radar stealth, frequency-selective detection, and next-generation wireless communication.
Article
Chemistry, Multidisciplinary
Junjie Zhou, Hang Li, Liguo Tan, Yue Liu, Junliang Yang, Ruimao Hua, Chenyi Yi
Summary: Novel organic hole transport materials (HTMs), named T3, with high hole mobility, good band alignment and ease of fabrication, are designed and synthesized. The fluorine-substituted T3 (T3-F) exhibits the best band alignment and hole extraction properties, resulting in perovskite solar cells (PSCs) with outstanding power conversion efficiencies (PCEs) of 24.85% and 24.03% for aperture areas of 0.1 and 1 cm², respectively. The simple structure and tunable performance of T3 inspire further optimization for efficient PSCs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Physics, Applied
Ling-Yu Pan, Biao Liu, Junliang Yang, Shuang-Feng Yin, Meng-Qiu Cai
Summary: In this study, the electronic properties of 2D ferroelectric heterostructure were investigated using first-principle calculations. It was found that the heterostructure switched from traditional type-II to S-type when the ferroelectric polarization was reversed, leading to improved photocatalytic activity. This work highlights the significance of ferroelectric polarization for charge transfer and provides theoretical guidance for designing high-performance S-type photocatalysts.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Xianghui Zeng, Minglu Hu, Pei He, Weikai Zhao, Sihan Dong, Xiaowen Xu, Guozhang Dai, Jia Sun, Junliang Yang
Summary: This article introduces a method using heat transfer printing technology to create robust conductive patterns on fabric substrates, resulting in a high conductivity and durable carbon-based electronic textile. The sensor can accurately reflect different degrees of finger bending and works well in waterproof situations. Additionally, five sensors were integrated into a fabric glove, which, combined with machine learning, can recognize 8 different gestures with an average accuracy of 96.58%.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Yunchao Xu, Yiming Shi, Chuan Qian, Pengshan Xie, Chenxing Jin, Xiaofang Shi, Gengming Zhang, Wanrong Liu, Changjin Wan, Johnny C. Ho, Jia Sun, Junliang Yang
Summary: In this study, a novel optically readable organic electrochemical synaptic transistor (OR-OEST) strategy is proposed. The electrochemical doping mechanism of the device is systematically investigated, and basic biological synaptic behaviors that can be read by optical means are successfully achieved. The flexible OR-OESTs can electrically switch the transparency of semiconductor channel materials in a nonvolatile manner, enabling multilevel memory through optical readout. Moreover, the OR-OESTs are applied for preprocessing photonic images, such as contrast enhancement and denoising, and achieve a recognition rate of over 90% when fed into an artificial neural network.
Article
Chemistry, Multidisciplinary
Hengyue Li, Xiangxiang Feng, Keqing Huang, Siyuan Lu, Xinyue Wang, Erming Feng, Jianhui Chang, Caoyu Long, Yuanji Gao, Zhihui Chen, Chenyi Yi, Jun He, Junliang Yang
Summary: A facile and robust deposition technique, doctor-blading, is used to efficiently fabricate high-quality perovskite solar cells (PSCs) under a wide range of humidity. By combining an ionic liquid and molecular additives, the morphology and crystallization process of the perovskite film are modulated, resulting in large-size crystal, low defect density, and ultrasmooth surface. The achieved power conversion efficiency (PCE) of 20.34% for doctor-bladed PSCs is the highest reported for one-step solution-processed PSCs without antisolvent assistance.
Article
Chemistry, Multidisciplinary
Jiaxin Wan, Hua Yuan, Zhixing Xiao, Jia Sun, Yongyi Peng, Dou Zhang, Xi Yuan, Jidong Zhang, Zhuan Li, Guozhang Dai, Junliang Yang
Summary: Two-dimensional (2D) Ruddlesden-Popper (RP) layered halide perovskite with asymmetric crystal structure and spontaneous polarization generated by inserting organic cations shows excellent optoelectronic properties, and is used to fabricate 2D RP polycrystalline perovskite films and pyro-phototronic devices for temperature and light detection. The pyro-phototronic effect greatly improves the performance of the photodetectors, with higher current, responsivity, detectivity, and on/off ratio compared to the photovoltaic effect. The study also explores the influence of bias voltage, light power density, and frequency on the pyro-phototronic effect of 2D RP perovskite devices.
Article
Chemistry, Physical
Xiaofang Shi, Wanrong Liu, Yunchao Xu, Chenxing Jin, Gengming Zhang, Yiming Shi, Han Huang, Jia Sun, Junliang Yang
Summary: An artificial skin nociceptor based on UV-selective C8-BTBT phototransistors was developed in this study. The devices showed a high photo-dark current ratio and exhibited biological synaptic behaviors under UV light stimuli. The minimum power consumption per synaptic event was comparable to that of biological synapses. The potential applications of the skin-inspired nociceptor in bionic electronics technology were demonstrated.
Article
Materials Science, Multidisciplinary
Huayan Xia, Lihong Li, Mei Fang, Tim S. Jones, Junliang Yang
Summary: This study reports on the molecular-orientation-dependent magnetic properties of FePc thin films and microwires. The ability to control molecular orientation and ferromagnetism in FePc thin films and microwires makes them promising candidates for flexible spintronic devices.
ORGANIC ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Xue Bai, Erming Feng, Hengyue Li, Jingbo Guo, Xiaoming Yuan, Huan Liu, Qun Luo, Yingguo Yang, Changqi Ma, Chenyi Yi, Zijian Zheng, Junliang Yang
Summary: Organic solar cells are cost-effective and flexible, and the addition of 1,4-difluorobenzene improves their structure and performance parameters, leading to enhanced efficiency.
ORGANIC ELECTRONICS
(2023)
Article
Chemistry, Physical
Zhixing Xiao, Yuguang Luo, Hua Yuan, Tingwei Zheng, Sixing Xu, Guozhang Dai, Junliang Yang
Summary: In this study, a simple, efficient, and versatile energy management strategy for triboelectric nanogenerator (TENG) is proposed, which amplifies the TENG output performance through the coupling of a charge pump circuit with a BUCK circuit. By implementing this strategy, the charge output of an ordinary TENG can be increased by more than 40 times, resulting in high power density and energy transfer efficiency. This study is of great significance for the practical application of TENG in the sensor network of the Internet of Things and for expanding its application range.
Article
Chemistry, Multidisciplinary
Yunchao Xu, Gengming Zhang, Wanrong Liu, Chenxing Jin, Yiling Nie, Jia Sun, Junliang Yang
Summary: In this study, a simple method was used to fabricate flexible multi-terminal photoelectronic neurotransistors, which exhibited excellent electrical stability and mechanical flexibility after being bent. Basic photoelectronic synaptic behavior and pulse-dependent plasticity were emulated, and the device realized spatiotemporally integrated electrical and optical stimuli to mimic spatiotemporal information processing.
