An organic semiconductor/metal Schottky heterojunction based direct current triboelectric nanogenerator windmill for wind energy harvesting

Article Chemistry, Multidisciplinary

A Dual-Mode Triboelectric Nanogenerator for Wind Energy Harvesting and Self-Powered Wind Speed Monitoring

Lixia He et al.

Summary: A high-performance dual-mode triboelectric nanogenerator is proposed, which can efficiently collect wind energy and monitor wind speed in real-time, with excellent durability and energy-harvesting efficiency.

ACS NANO (2022)

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Article Physics, Applied

A Cu/P-type GaN triboelectric nanogenerator with power density over 100 W/m2

Kai Xiao et al.

Summary: This paper reports a metal-semiconductor direct current triboelectric nanogenerator (MSDC-TENG) based on P-type GaN with a tin electrode, which exhibits high power density. By adjusting the doping concentration of P-GaN, high open circuit voltage and short circuit current density can be achieved. The experimental results also provide useful insights into the relationship between carrier concentration and short circuit current in Cu/GaN triboelectric nanogenerator.

APPLIED PHYSICS LETTERS (2022)

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Article Nanoscience & Nanotechnology

Coexistence of Contact Electrification and Dynamic p-n Junction Modulation Effects in Triboelectrification

Haobin Wang et al.

Summary: This paper reports an additional charge generation phenomenon, the p-n junction modulation effect, associated with dynamic contact and separation of two semiconductor materials, which may provide an alternative method for the development of high-performance TENGs.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Chemistry, Physical

Tribological-behaviour-controlled direct-current triboelectric nanogenerator based on the tribovoltaic effect under high contact pressure

Di Yang et al.

Summary: The relationship between triboelectrification and tribological characteristics at the metal-semiconductor heterojunction interface was studied, and a new strategy for achieving a stable DC triboelectric output and wear resistance was proposed through controlling the tribological behavior.

NANO ENERGY (2022)

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Article Chemistry, Multidisciplinary

Simultaneously Enhancing Direct-Current Density and Lifetime of Tribovotaic Nanogenerator via Interface Lubrication

Wenyan Qiao et al.

Summary: This study proposes an effective strategy of interface lubrication to enhance the direct-current density and lifetime of Tribovoltaic nanogenerators (TVNGs). It also finds that TVNGs can be combined with triboelectric nanogenerators to constitute a dual-type signal sensor for monitoring bridge vibration and goods' weight.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Physical

Sliding Schottky diode triboelectric nanogenerators with current output of 109 A/m2 by molecular engineering of Si(211) surfaces br

Xin Lyu et al.

Summary: Triboelectric nanogenerators are a sustainable power-generation technology that converts small vibrations into electricity. Through molecular control of oxide-free Si crystals, researchers have achieved high-density current output and identified the use of protonexchangeable organic monolayers and surface dipoles as key factors for achieving high current output.

NANO ENERGY (2022)

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Review Engineering, Electrical & Electronic

Direct-Current Triboelectric Nanogenerators Based on Semiconductor Structure

Qianqian Luo et al.

Summary: With the rapid development of technology and the expansion of the information age, self-powered systems are gradually emerging. Triboelectric nanogenerators (TENGs), coupling contact electrification and electrostatic induction, can realize continuous power supplied for small devices by converting energy. Traditional TENGs mainly used organic polymer insulators as triboelectric materials, which are limited by low current density alternating current. Recently, many different semiconductor material systems, especially gallium nitride (GaN), have been tried for better electric output performance or more application potential due to their high current density direct current, which can improve the output performance and mechanical properties of TENGs and have important application value at the forefront of portable electronic devices, Internet of things, environmental and infrastructural monitoring, medical science, security, and other fields. In this review, we summarize the latest research achievements and progress on TENGs with different semiconductor structures, including metal-semiconductor TENGs, semiconductor-semiconductor TENGs, metal-insulator-semiconductor TENGs, and liquid-semiconductor TENGs. On the basis of the current TENG theory of tribovoltaic effect, the generation mechanism and performance of each TENG was represented. Direct-current TENGs based on semiconductor structure show great promise for self-powered electronic devices.

ACS APPLIED ELECTRONIC MATERIALS (2022)

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Article Physics, Multidisciplinary

Influence of the environment on the morphology, optical and electrical characteristics of the PEDOT:PSS polymer

X. S. Rozhkova et al.

Summary: This study investigates the influence of the environment on the surface structure, optical and electrical characteristics of the PEDOT:PSS film. The results show that modifying the polymer film surface with ethanol and isopropanol in different atmospheres leads to changes in surface morphology and optical electric transport properties. The absorption spectra of the modified film exhibit shifts and decreases in specific absorption peaks. The study also identifies the impact of PEDOT:PSS surface morphology on the electrical transport parameters of the films.

BULLETIN OF THE UNIVERSITY OF KARAGANDA-PHYSICS (2022)

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Article Chemistry, Physical

Effect of water and DMSO on mechanoelectrical conversion of Schottky DC generators

Xiang Ding et al.

Summary: This study demonstrates the significant impact of water content on the mechanical-to-electrical conversion of PPy-based Schottky DC generators. Increasing water content improves device performance by enhancing current outputs. Incorporating DMSO stabilizes water content and enhances electrical outputs, especially at lower water content levels.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Chemistry, Multidisciplinary

Achieving an ultrahigh direct-current voltage of 130 V by semiconductor heterojunction power generation based on the tribovoltaic effect

Zhaozheng Wang et al.

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)

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Review Chemistry, Multidisciplinary

Triboelectric Nanogenerator: Structure, Mechanism, and Applications

Weon-Guk Kim et al.

Summary: With the rapid growth of the Internet of Things (IoT), the utilization of sensors is projected to surpass 200 billion by 2025. The triboelectric nanogenerator (TENG) has gained significant attention as an energy harvester due to its high output power, eco-friendly fabrication, and customizable working modes. It extracts electrical energy from wasted mechanical energy and offers various operational modes and charge transfer mechanisms for enhancing energy efficiency.

ACS NANO (2021)

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Review Chemistry, Multidisciplinary

The Triboelectric Nanogenerator as an Innovative Technology toward Intelligent Sports

Jianjun Luo et al.

Summary: In the new era of the Internet-of-Things, the development of intelligent sports relies heavily on athletic big data collection and analysis using widely distributed sensing networks. The triboelectric nanogenerator (TENG) has shown great potential in overcoming limitations of conventional sensors with its mechanical energy harvesting and self-powered sensing technology, fabricated using common materials like wood and paper. Progress on TENG-based sports sensing systems, including smart sports facilities and wearable equipment, as well as the remaining challenges and open opportunities in the field of intelligent sports, are summarized.

ADVANCED MATERIALS (2021)

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Article Thermodynamics

A novel genetic LSTM model for wind power forecast

Farah Shahid et al.

Summary: A novel genetic long short term memory (GLSTM) framework is proposed for accurate and reliable short-term wind power prediction, showing significant improvements of 6% to 30% compared to existing techniques across seven wind farms in Europe.

ENERGY (2021)

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Review Chemistry, Physical

Semiconductor-based dynamic heterojunctions as an emerging strategy for high direct-current mechanical energy harvesting

Ruizhe Yang et al.

Summary: Direct-current (DC) power generation through mechanically modulated semiconductor-based heterojunctions is a newly found physical phenomenon that can achieve high current densities. Unlike traditional methods, the DC generation is associated with multi-scale and multi-physics interactions at the dynamic interfaces with semiconductor junctions. The concept shows great promise for scaled-up as well as miniaturized self-powering applications.

NANO ENERGY (2021)

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Article Multidisciplinary Sciences

High performance floating self-excited sliding triboelectric nanogenerator for micro mechanical energy harvesting

Li Long et al.

Summary: This study introduces a floating self-excited sliding TENG which solves the issue of low output in traditional floating TENG, achieving high charge density and output, and can continuously power small electronics.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Flexible Textile Direct-Current Generator Based on the Tribovoltaic Effect at Dynamic Metal-Semiconducting Polymer Interfaces

Jia Meng et al.

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)

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Article Chemistry, Physical