Flexible optoelectronic sensors: status and prospects

Wang, Zhuoran; Shen, Guozhen

doi:10.1039/d2qm01319c

Cited by 10 publications

(2 citation statements)

References 151 publications

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“…The functional device layers are often based on organic/polymer semiconductors, as inorganic counterparts possess large elastic modulus and small fracture strain. [6] Organic semiconductors can be made with excellent optoelectronic properties, have some mechanical flexibility [7] and can be processed over large areas using roll-to-roll techniques. [8] Substantial scientific and commercial progress has been demonstrated in organic flexible thin film devices, such as light-emitting diodes, [9][10][11] photovoltaics, [12] field-effect transistors, [13] sensors, [14] and memories.…”

Section: Introductionmentioning

confidence: 99%

Stretchable Substrates with 3D Wave Patterned Surface for Enhanced Mechanical Stability of Indium Tin Oxide Electrodes

Linnet,

Nørgaard,

Kiil

et al. 2024

Adv Materials Technologies

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Flexible electronic devices have promising applications in many future technologies such as wearables, implantables, robotics, and displays. Among the distinct types of mechanical flexibility, stretchability stands as a significant challenge. A particularly demanding objective is the realization of a high‐performance transparent electrode that endures stretching and can be mass produced, all while avoiding additional restrictions on device density. In this work, it is demonstrated that a 3D wave patterned surface provides a threefold improved strain performance of deposited indium tin oxide electrodes, in a statistical comparison of 3D wave patterned and planar surfaces, where indium tin oxide electrodes are stretched to electrical failure. Moreover, this platform alleviates residual thin film stress, allowing for easier handling of the substrates. This study demonstrates the feasibility of attaining stretchability for upcoming electronic devices using a scalable platform that incorporates high‐performance transparent electrode materials using only conventional materials and fabrication steps.

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Section: Introductionmentioning

confidence: 99%

Stretchable Substrates with 3D Wave Patterned Surface for Enhanced Mechanical Stability of Indium Tin Oxide Electrodes

Linnet,

Nørgaard,

Kiil

et al. 2024

Adv Materials Technologies

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“…Photoelectrochemistry (PEC) is traceable to electrochemistry and ameliorates the biggest drawback of electrochemistry-homology between the excitation signal and output signal. − PEC bioanalysis was developed based on the principle of converting light to electrons and has recently attracted considerable research attention owing to its advantages such as high sensitivity, low cost, and rapid response. − PEC biosensors have been widely used in recent years for the detection of DNA, cells, and biomarkers. − Researchers are actively working to develop different types of PEC probes that enable rapid detection, easy handling, and cost-effective analysis of biomarkers in various complex sensing scenarios. − However, the current development of PEC biosensors in practical applications is seriously restricted because the traditional PEC sensing system usually consists of light sources, sensing elements, and signal acquisition equipment. − In the conventional PEC analysis system, the large xenon lamps or LEDs have been commonly used as external light sources, which are usually separated from the traditional sensing opto-electrodes such as indium tin oxide glass (ITO), F-doped tin oxide glass (FTO), and glassy carbon electrode (GCE). − The use of external light sources generally results in light loss during transmission, leading to reduced light utilization. The current signals generated by the opto-electrode are influenced by factors such as distance and angle of the incident light, as well as the surrounding environment where the light source is located, and therefore affect the detection accuracy and reproducibility of PEC sensors.…”

Section: Introductionmentioning

confidence: 99%

SILAR Growth of ZnO NSs/CdS QDs on the Optical Fiber-Based Opto-Electrode with Guided In Situ Light and Its Application for the “Signal-On” Detection of Inflammatory Cytokine

Zou,

Wu,

Zhou

et al. 2024

Anal. Chem.

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In this study, a novel integrated photoelectrochemical (PEC) sensor platform was proposed, utilizing an optical fiber (OF) as the working electrode for guided in situ light. A CdS quantum dots (QDs)/ZnO nanosheets (NSs) n-n heterojunction was quickly and easily constructed on the OF surface by successive ionic layer adsorption and reaction (SILAR). Au nanoparticles (NPs)@dsDNA as a capturing probe were modified on the CdS QDs/ZnO NSs@OF (CZ@OF). Due to the energy transfer between Au NPs@dsDNA and CdS QDs, the resultant optoelectrode has a lower background near zero, enabling the "signalon" detection of biomarkers (interleukin-6 (IL-6) as a model). The OF-PEC biosensor demonstrated a wide linear range from 1 to 100 pg mL −1 with a regression coefficient (R 2 ) of 0.9958 and an impressive detection limit (LOD) of 0.19 pg mL −1 . More significantly, the proposed OF-PEC can be successfully used for the detection of IL-6 in serum samples from patients with pulmonary arterial hypertension, and it showed consistency and is more sensitive to trace concentrations compared to BD FACSCanto II flow cytometry used at the hospital. This holds significance for an early disease diagnosis. Therefore, the proposed OF-PEC not only achieves integration of the light source and sensing interface but also enables sensitive and accurate "signal-on" detection of IL-6. Furthermore, due to the flexibility and remote detection capabilities of OF, the application of OF-PEC is expected to be expanded more widely. This approach opens up possibilities for advances in PEC sensing.

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Technology and Integration Roadmap for Optoelectronic Memristor

Wang,

Ilyas,

Ren

et al. 2023

Advanced Materials

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Optoelectronic memristors (OMs) have emerged as a promising optoelectronic Neuromorphic computing paradigm, opening up new opportunities for neurosynaptic devices and optoelectronic systems. These OMs possess a range of desirable features including minimal crosstalk, high bandwidth, low power consumption, zero latency, and the ability to replicate crucial neurological functions such as vision and optical memory. By incorporating large‐scale parallel synaptic structures, OMs are anticipated to greatly enhance high‐performance and low‐power in‐memory computing, effectively overcoming the limitations of the von Neumann bottleneck. However, progress in this field necessitates a comprehensive understanding of suitable structures and techniques for integrating low‐dimensional materials into optoelectronic integrated circuit platforms. This review aims to offer a comprehensive overview of the fundamental performance, mechanisms, design of structures, applications, and integration roadmap of optoelectronic synaptic memristors. By establishing connections between materials, multilayer optoelectronic memristor units, and monolithic optoelectronic integrated circuits, this review seeks to provide insights into emerging technologies and future prospects that are expected to drive innovation and widespread adoption in the near future.This article is protected by copyright. All rights reserved

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Flexible optoelectronic sensors: status and prospects

Abstract: Different from conventional circuits made of bulky semiconductors, flexible electronics bring mechanical flexibility and remove form factor constrains in highly functional systems, which stimulate innovative applications. It leads to rapid...

Cited by 10 publications

References 151 publications

Stretchable Substrates with 3D Wave Patterned Surface for Enhanced Mechanical Stability of Indium Tin Oxide Electrodes

Stretchable Substrates with 3D Wave Patterned Surface for Enhanced Mechanical Stability of Indium Tin Oxide Electrodes

SILAR Growth of ZnO NSs/CdS QDs on the Optical Fiber-Based Opto-Electrode with Guided In Situ Light and Its Application for the “Signal-On” Detection of Inflammatory Cytokine

Technology and Integration Roadmap for Optoelectronic Memristor

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