Self-Powered Electrostatic Filter with Enhanced Photocatalytic Degradation of Formaldehyde Based on Built-in Triboelectric Nanogenerators

Feng, Yawei; Ling, Li−Li; Nie, Jinhui; Han, Kai; Chen, Xiangyu; Bian, Zhenfeng; Li, Hexing; Wang, Zhong Lin

doi:10.1021/acsnano.7b06451

Cited by 184 publications

(89 citation statements)

References 31 publications

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“…D* used to demonstrate the ability of the device to detect minimum illumination signal . The formulas display as follows

I_{ph} = I_{light} - I_{dark}

R_{i} = \frac{I_{ph}}{p S}

EQE = \frac{I_{ph}}{e \emptyset} = \frac{h v}{e} \frac{I_{ph}}{p} = R_{i} \frac{h v}{e}

D^{*} = \frac{\sqrt{S} R_{i}}{\sqrt{2 e I_{dark}}}

where I light , I ph , I dark , p , ϕ, e , hν , and S 1 are device current under illumination, device dark current, device photocurrent, laser power density, photon flux, electron charge, photon energy, and device effective area, respectively …”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Ultrahigh Stability 3D TI Bi₂Se₃/MoO₃ Thin Film Heterojunction Infrared Photodetector at Optical Communication Waveband

Yang

Han

Liu

et al. 2020

Adv Funct Materials

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Infrared (IR) detection at 1300–1650 nm (optical communication waveband) is of great significance due to its wide range of applications in commerce and military. Three dimensional (3D) topological insulator (TI) Bi2Se3 is considered a promising candidate toward high‐performance IR applications. Nevertheless, the IR devices based on Bi2Se3 thin films are rarely reported. Here, a 3D TI Bi2Se3/MoO3 thin film heterojunction photodetector is shown that possesses ultrahigh responsivity (Ri), external quantum efficiency (EQE), and detectivity (D*) in the broadband spectrum (405–1550 nm). The highest on–off ratio of the optimized device can reach up to 5.32 × 104. Ri, D*, and the EQE can reach 1.6 × 104 A W−1, 5.79 × 1011 cm2 Hz1/2 W−1, and 4.9 × 104% (@ 405 nm), respectively. Surprisingly, the Ri can achieve 2.61 × 103 A W−1 at an optical communication wavelength (@ 1310 nm) with a fast response time (63 µs), which is two orders of magnitude faster than that of other TIs‐based devices. In addition, the device demonstrates brilliant long‐term (>100 days) environmental stability under environmental conditions without any protective measures. Excellent device photoelectric properties illustrate that the 3D TI/inorganic heterojunction is an appropriate way for manufacturing high‐performance photodetectors in the optical communication, military, and imaging fields.

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“…D* used to demonstrate the ability of the device to detect minimum illumination signal . The formulas display as follows

I_{ph} = I_{light} - I_{dark}

R_{i} = \frac{I_{ph}}{p S}

EQE = \frac{I_{ph}}{e \emptyset} = \frac{h v}{e} \frac{I_{ph}}{p} = R_{i} \frac{h v}{e}

D^{*} = \frac{\sqrt{S} R_{i}}{\sqrt{2 e I_{dark}}}

Section: Resultsmentioning

confidence: 99%

“…In addition, response time has always been regarded as an important part of the overall characteristics of photoelectric devices . Figure a,b is the response time curves of Bi 2 Se 3 /MoO 3 heterojunction photodetector @ 1310 nm and @ 1550 nm, respectively.…”

Section: Resultsmentioning

confidence: 99%

Ultrahigh Stability 3D TI Bi₂Se₃/MoO₃ Thin Film Heterojunction Infrared Photodetector at Optical Communication Waveband

Yang

Han

Liu

et al. 2020

Adv Funct Materials

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“…Meanwhile, low fabrication cost and design flexibility of TENG can further facilitate its development in the industrialization direction . Originated from the Maxwell's displacement current, TENG can convert mechanical energy from environment to electricity by utilizing the coupling effect of triboelectrification and electrostatic induction . So far, a variety of TENGs have been designed to harness low frequency energy in the water wave and the maximum power density of the device has been updated almost every two months.…”

Section: Introductionmentioning

confidence: 79%

Butterfly‐Inspired Triboelectric Nanogenerators with Spring‐Assisted Linkage Structure for Water Wave Energy Harvesting

Lei

Zhai

Nie

et al. 2018

Adv Materials Technologies

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which results in the urgent demand for the development of renewable techniques. [1] Water wave energy has the promising prospects for producing electrical power on a large scale, since 70% surface of earth is covered by oceans. [2] However, the traditional electromagnetic generators for harvesting water wave energy have some limitations, such as bulky structure, high fabrication cost, and insufficient energy conversion capability at low frequency. [3] Therefore, searching a new type of conversion method for harvesting water wave energy can be a real challenge. [1a,4] The emergence of triboelectric nanogenerator (TENG) provides a new possibility for effectively harvesting water wave energy due to its high conversion efficiency at low frequency state (especially 0.1-3 Hz). [2,5] Meanwhile, low fabrication cost and design flexibility of TENG can further facilitate its development in the industrialization direction. [6] Originated from the Maxwell's displacement current, [7] TENG can convert mechanical energy from environment to electricity [8] by utilizing the coupling effect of triboelectrification and electrostatic induction. [9] So far, a variety of TENGs have been designed to harness low frequency energy in the water wave [10] and the maximum power density of the device has been updated almost every two months.The exploration of water wave energy to generate electric power is a promising and valuable way to solve global energy crisis. Triboelectric nanogenerators (TENGs) are considered as one of the most promising approaches for harvesting water wave energy. Here, a butterfly-inspired triboelectric nanogenerator (B-TENG) with spring-assisted four-bar linkage is fabricated to acquire multidirectional water wave energy from different types of movements generated by the device. The arc-shaped outer shell can efficiently absorb the impact force of water wave and inner spring-assisted four-bar linkage can induce multiple contact-separation motion of TENG module, both of which allow the B-TENG to harvest energy from different types of low-frequency waves. The short-circuit current and open-circuit voltage of this B-TENG device can reach 75.35 µA and 707.01 V, while a maximum output power density of 9.559 W m −3 can be achieved and 180 light-emitting diodes can be directly lightened up by this B-TENG. The energy generated from this B-TENG can also be stored in a capacitor and to drive some marine sensor devices, such as an electronic thermometer. This proposed B-TENG device is specially designed for multidirectional water energy harvesting and it may have good application prospects for ocean information monitoring and power supply to oceanic islands. Triboelectric NanogeneratorsThe ORCID identification number(s) for the author(s) of this article can be found under https://doi.

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“…Chen et al proposed a TENG‐based air filter to remove SO 2 and flying dust particulate . Moreover, Feng et al developed a purifying filter based on the combination of TENG and photocatalysis techniques for simultaneously increasing the adsorption capacity of PMs and the photocatalytic degradation speed . Figure a shows the self‐powered filter that removes particulates and VOC by combining TENG and photocatalysis material.…”

Section: Electrostatic Adsorption and Air Cleaning Based On Tengmentioning

confidence: 99%

Section: Electrostatic Adsorption and Air Cleaning Based On Tengmentioning

confidence: 99%

Electrically Responsive Materials and Devices Directly Driven by the High Voltage of Triboelectric Nanogenerators

Nie

Chen

Wang

2018

Adv Funct Materials

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133

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Smart materials with electrically responsive characteristics and devices relying on different electrostatic effects can be directly driven by triboelectric nanogenerators (TENGs). The open circuit voltage from a TENG can easily reach thousands of volts with a separation distance of a few millimeters and this high output voltage can be used to effectively drive or control some devices with high internal resistance. This kind of combination is the most straightforward way for achieving a self-powered smart system. Hence, a detailed survey of electrically responsive materials and devices that can be successfully combined with TENG is summarized, including dielectric elastomers, piezoelectric materials, ferroelectric materials, electrostatic manipulators, electrostatic air cleaners, and field emission and mass spectrometers. Moreover, key factors in determining suitable materials or devices to work with TENG are clarified and an in-depth discussion of the current challenges related to these combined systems is provided. With the cost-effectiveness and simple manufacturing process, these TENG-based composite systems have great application prospects in the field of smart mechanics, human-machine interaction systems, intelligent storage systems, self-powered microfluidic chips, portable mass spectrometers, and so on.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201806351. mainstream technique in the field of energy harvesting and self-powered systems. [1] Based on the coupling effect of triboelectrification and electrostatic induction, [2] TENG can convert almost all kinds of mechanical energies from vibrations, water waves, wind, raindrop, and human motions into electricity. [3] Comparing with other energy harvesting techniques, TENG is more attractive because of its advantages of simple fabrication, reliability, cost-effectiveness, and wide availability of low-frequency resources. [4] The TENG can serve as a sustainable power supply [5] by developing four different operation modes, [6] including vertical contactseparation mode, [7] lateral sliding mode, [8] single-electrode mode, [9] and freestanding triboelectric-layer mode. [10] Meanwhile, in order to improve the output performance of TENG, a great number of works have been done to optimize the materials and interfaces of the device. [11] Accordingly, the optimized TENG performance can achieve an area power density larger than 500 W m −2 , [12] a volume power density about 15 MW m −3 , [12] an instantaneous conversion efficiency larger than 70%, [13] and a total efficiency up to 85%. [14] As an advanced and durable energy source, the development of TENG has promoted and inspired many fields, such as wind [15] and ocean energy harvesting, [16] self-powered smart systems, [17] potable energy package, [18] highly sensitive tactile sensor, [19] and so on.Generally speaking, the output characteristic of TENG is a high open-circuit voltage (V OC ) reaching a few thousand volts and a low short-circuit...

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Self-Powered Electrostatic Filter with Enhanced Photocatalytic Degradation of Formaldehyde Based on Built-in Triboelectric Nanogenerators

Cited by 184 publications

References 31 publications

Ultrahigh Stability 3D TI Bi₂Se₃/MoO₃ Thin Film Heterojunction Infrared Photodetector at Optical Communication Waveband

Ultrahigh Stability 3D TI Bi₂Se₃/MoO₃ Thin Film Heterojunction Infrared Photodetector at Optical Communication Waveband

Butterfly‐Inspired Triboelectric Nanogenerators with Spring‐Assisted Linkage Structure for Water Wave Energy Harvesting

Electrically Responsive Materials and Devices Directly Driven by the High Voltage of Triboelectric Nanogenerators

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Self-Powered Electrostatic Filter with Enhanced Photocatalytic Degradation of Formaldehyde Based on Built-in Triboelectric Nanogenerators

Cited by 184 publications

References 31 publications

Ultrahigh Stability 3D TI Bi2Se3/MoO3 Thin Film Heterojunction Infrared Photodetector at Optical Communication Waveband

Ultrahigh Stability 3D TI Bi2Se3/MoO3 Thin Film Heterojunction Infrared Photodetector at Optical Communication Waveband

Butterfly‐Inspired Triboelectric Nanogenerators with Spring‐Assisted Linkage Structure for Water Wave Energy Harvesting

Electrically Responsive Materials and Devices Directly Driven by the High Voltage of Triboelectric Nanogenerators

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Product

Resources

About

Ultrahigh Stability 3D TI Bi₂Se₃/MoO₃ Thin Film Heterojunction Infrared Photodetector at Optical Communication Waveband

Ultrahigh Stability 3D TI Bi₂Se₃/MoO₃ Thin Film Heterojunction Infrared Photodetector at Optical Communication Waveband