Advances in Paper‐Based Photodetectors: Fabrications, Performances, and Applications

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(27)

Published: July 15, 2024

Abstract With the development of wearable electronic technology, flexible photodetectors have attracted widespread attention, and it is great significance to develop flexible, eco‐friendly low‐cost photodetectors. Cellulose paper, as a eco‐friendly, low‐cost, lightweight, customizable, biodegradable renewable material, has received enthusiastic attention rapid in field recent years. In this review, focused on research progress paper‐based (PB) First, fabrication methods PB are discussed, including electrode materials optoelectronic functional materials. Then, review systematically summarizes analyzes achievements photoelectric performances (spectral response range, responsivity, detectivity, response/recovery times on/off ratio) flexibility characteristics (bending angle bending cycle). terms key performance indicators, reported so far can detect multiple wavelengths light from UV near‐infrared with maximum detectivity 10 13 Jones. addition, various applications reviewed discussed. Finally, look forward future methods, performances, applications. hope that will promoted

Language: Английский

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The Rise of Xene Hybrids

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 20, 2024

Abstract Xenes, mono‐elemental atomic sheets, exhibit Dirac/Dirac‐like quantum behavior. When interfaced with other 2D materials such as boron nitride, transition metal dichalcogenides, and carbides/nitrides/carbonitrides, it enables them unique physicochemical properties, including structural stability, desirable bandgap, efficient charge carrier injection, flexibility/breaking stress, thermal conductivity, chemical reactivity, catalytic efficiency, molecular adsorption, wettability. For example, BN acts an anti‐oxidative shield, MoS 2 injects electrons upon laser excitation, MXene provides mechanical flexibility. Beyond precise compositional modulations, stacking sequences, inter‐layer coupling controlled by parameters, achieving scalability reproducibility in hybridization is crucial for implementing these consumer applications. However, realizing the full potential of hybrid faces challenges air gaps, uneven interfaces, formation defects functional groups. Advanced synthesis techniques, a deep understanding behaviors, control over interfacial interactions, awareness cross‐correlations among factors are essential. Xene‐based hybrids show immense promise groundbreaking applications computing, flexible electronics, energy storage, catalysis. In this timely perspective, recent discoveries novel Xenes their highlighted, emphasizing correlations synthetic structure, It anticipated that insights will revolutionize diverse industries technologies.

Language: Английский

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Improved liquid phase exfoliation technique for the fabrication of MoS2/graphene heterostructure-based photodetector

Heliyon, Journal Year: 2024, Volume and Issue: 10(3), P. e24964 - e24964

Published: Jan. 26, 2024

2D nanosheets produced using liquid phase exfoliation method offers scalable and cost effective routes to optoelectronics devices. But this technique sometimes yields high defect, low stability, compromised electronic properties. In work, we employed an innovative approach that improved the existing for fabricating MoS2/graphene heterostructure-based photodetector with enhanced optoelectronic This involves hydrothermally treating MoS2 before dispersing it in a carefully chosen environmentally friendly IPA/water solvent ultrasonication through optomechanical approach. Thereafter, heterostructure of graphene were formed sequential deposition fabrication vertical heterojunctions. Furthermore, achieved vertically stacked bare photodetector. The hybrid characterized spectroscopic microscopic techniques. results obtained show size is between 350 500 nm on average, their thickness less than or equal 5 nm, crystallinity 2H semiconducting phase. photocurrent, photoresponsivity, external quantum efficiency (EQE), specific detectivity at 4 V bias voltage 650 illumination wavelength 3.55 μA, 39.44 mA/W, 7.54 %, 2.02 × 1010 Jones, respectively, are 0.55 6.11 1.16 3.4 109 Jones. presented indicate photoresponse performances as-prepared greatly (about 7-fold) compared sole MoS2. Again, fabricated work better characteristics as similar prepared conventional solution processed method. provide modest, inexpensive, efficient fabricate heterojunctions performance.

Language: Английский

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Printed Two-Dimensional Materials for Flexible Photodetectors: Materials, Processes, and Applications

Sensors, Journal Year: 2025, Volume and Issue: 25(4), P. 1042 - 1042

Published: Feb. 10, 2025

With the rapid development of micro-nano technology and wearable devices, flexible photodetectors (PDs) have drawn widespread interest in areas such as healthcare, consumer electronics, intelligence interfaces. Two-dimensional (2D) materials with layered structures excellent optoelectronic properties mechanical flexibility, which attract a great deal attention applications. Although based on mechanically exfoliated 2D demonstrated superior performance compared to traditional Si-based PDs, large-scale manufacturing integration remain significant challenges for achieving industrial production. The emerging various printing provides low-cost highly effective method integrated manufacturing. In this review, we comprehensively introduce most recent progress printed material PDs. We first reviewed research photodetectors, discussion is focused substrate materials, functional figures merits. Furthermore, solution processing coupled film strategies produce PDs are summarized. Subsequently, applications image sensors, also Finally, point out potential expect work inspire promote mass process.

Language: Английский

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H‐BN‐Encapsulated Uncooled Infrared Photodetectors Based on Tantalum Nickel Selenide

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(48)

Published: Sept. 22, 2023

Abstract Uncooled broadband spectrum detection, spanning from visible to mid‐wave‐infrared regions, offers immense potential for applications in environmental monitoring, optical telecommunications, and radar systems. While leveraging proven technologies, conventional photodetectors are encumbered by high dark currents the necessity cryogenic cooling. Correspondingly, innovative low‐dimensional materials like black phosphorus manifest weak photoresponse instability. Here, tantalum nickel selenide (Ta 2 NiSe 5 ) infrared with an operational wavelength range 520 nm 4.6 µm, utilizing a hexagonal boron nitride (h‐BN) encapsulation technique introduced. The h‐BN encapsulated metal‐Ta ‐metal photodetector demonstrates responsivity of 0.86 A W −1 , noise equivalent power 1.8 × 10 −11 Hz −1/2 peak detectivity 8.75 8 cm 1/2 at µm under ambient conditions. Multifaceted mechanisms photocurrent generation novel device prototype subject scrutinized varying wavelengths radiation, characterizing temporal‐, bias‐, power‐, temperature‐dependent photoresponse. Moreover, photopolarization dependence is delved concealed‐target imaging demonstrated, which exhibits polarization angle sensitivity high‐fidelity across visible, short‐wave, bands. observations, reveal versatile detection modalities, propose Ta as promising material advanced nano‐optoelectronic device.

Language: Английский

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Aerosol‐Jet‐Printable Covalent Organic Framework Colloidal Inks and Temperature‐Sensitive Nanocomposite Films

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(38)

Published: June 8, 2023

With molecularly well-defined and tailorable 2D structures, covalent organic frameworks (COFs) have emerged as leading material candidates for chemical sensing, storage, separation, catalysis. In these contexts, the ability to directly deterministically print COFs into arbitrary geometries will enable rapid optimization deployment. However, previous attempts been restricted by low spatial resolution and/or post-deposition polymerization that limits range of compatible COFs. Here, limitations are overcome with a pre-synthesized, solution-processable colloidal ink enables aerosol jet printing micron-scale resolution. The formulation utilizes low-volatility solvent benzonitrile, which is critical obtaining homogeneous printed COF film morphologies. This also other nanomaterials, thus facilitating integration printable nanocomposite films. As proof-of-concept, boronate-ester integrated carbon nanotubes (CNTs) form COF-CNT films, in CNTs enhance charge transport temperature sensing performance, ultimately resulting high-sensitivity sensors show electrical conductivity variation 4 orders magnitude between room 300 °C. Overall, this work establishes flexible platform additive manufacturing accelerate incorporation technologically significant applications.

Language: Английский

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Solution-processable assembly of 2D semiconductor thin films and superlattices with photoluminescent monolayer inks

Chem, Journal Year: 2024, Volume and Issue: 10(5), P. 1471 - 1484

Published: Feb. 12, 2024

Language: Английский

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Flexible Printed Ultraviolet‐to‐Near‐Infrared Broadband Optoelectronic Carbon Nanotube Synaptic Transistors for Fast and Energy‐Efficient Neuromorphic Vision Systems

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: June 6, 2024

Abstract To simulate biological visual systems and surpass their functions performance, it is essential to develop high‐performance optoelectronic neuromorphic electronics with broadband response, low power consumption, fast response speed. Among these, synaptic transistors have emerged as promising candidates for constructing systems. In this work, flexible printed (from 275 1050 nm) carbon nanotube good stability, high speed (3.14 ms), low‐power consumption (as 0.1 fJ per event the nm pulse illumination) using PbS quantum dots (QDs) modified semiconducting single‐walled nanotubes (sc‐SWCNTs) active layers are developed. optical pulses within ultraviolet near‐infrared wavelength range, devices exhibit excitatory postsynaptic current, paired‐pulse facilitation, a transition from short‐term plasticity long‐term plasticity, other behaviors. Furthermore, simplified neural morphology array developed integrated such image perception, memory, preprocessing. More importantly, can also emulate complicated bionic functions, infrared perception of salmon eyes warning behavior reindeer in different environments. This work holds immense significance advancing development artificial

Language: Английский

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Carbon Micro/Nano Machining toward Miniaturized Device: Structural Engineering, Large‐Scale Fabrication, and Performance Optimization

Small, Journal Year: 2024, Volume and Issue: unknown

Published: July 19, 2024

Abstract With the rapid development of micro/nano machining, there is an elevated demand for high‐performance microdevices with high reliability and low cost. Due to their outstanding electrochemical, optical, electrical, mechanical performance, carbon materials are extensively utilized in constructing energy storage, sensing, optoelectronics. Carbon machining fundamental carbon‐based intelligent microelectronics, multifunctional integrated microsystems, high‐reliability portable/wearable consumer electronics, portable medical diagnostic systems. Despite numerous reviews on materials, a comprehensive overview lacking that systematically encapsulates based structures, from structural design manufacturing strategies specific applications. This review focuses latest progress toward miniaturized device, including engineering, large‐scale fabrication, performance optimization. Especially, targets in‐depth evaluation micro storage devices, microsensors, microactuators, photoresponsive electromagnetic interference shielding devices. Moreover, it highlights challenges opportunities microdevices, aiming spark further exciting research directions application prospectives.

Language: Английский

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Direct Writing of Graphene Electrodes for Point-of-Care Electrochemical Sensing Applications

Sensors & Diagnostics, Journal Year: 2024, Volume and Issue: 3(9), P. 1406 - 1427

Published: Jan. 1, 2024

Non-contact, maskless, direct writing methods allow the rapid, large-scale production of graphene electrodes with high design flexibility, showing great promise for point-of-care electrochemical sensing applications.

Language: Английский

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