A flexible, multifunctional, optoelectronic anticounterfeiting device from high-performance organic light-emitting paper

Pan, Teng; Liu, Shihao; Zhang, Letian; Xie, Wenfa; Yu, Cunjiang

doi:10.1038/s41377-022-00760-5

Cited by 40 publications

(23 citation statements)

References 43 publications

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“…To obtain more conformable on-skin PPG systems for wearable applications, OPDs have been fabricated on an ultrathin flexible substrate and integrated with light sources of either LEDs or organic LEDs (OLEDs), showing their capability of detecting theheart rate, blood oxygen content, and blood pressure for medical diagnostics [135][136][137]. Yokota et al fabricated an ultra-flexible reflective pulse oximeter based on an OPD with a structure of ITO/P3HT:PCBM/ MoO x /Au on a PI planarized perylene substrate [138].…”

Section: Wearable Medical Diagnosticsmentioning

confidence: 99%

Organic photodiodes: device engineering and applications

Shan

Hou

Yin

et al. 2022

Front. Optoelectron.

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Organic photodiodes (OPDs) have shown great promise for potential applications in optical imaging, sensing, and communication due to their wide-range tunable photoelectrical properties, low-temperature facile processes, and excellent mechanical flexibility. Extensive research work has been carried out on exploring materials, device structures, physical mechanisms, and processing approaches to improve the performance of OPDs to the level of their inorganic counterparts. In addition, various system prototypes have been built based on the exhibited and attractive features of OPDs. It is vital to link the device optimal design and engineering to the system requirements and examine the existing deficiencies of OPDs towards practical applications, so this review starts from discussions on the required key performance metrics for different envisioned applications. Then the fundamentals of the OPD device structures and operation mechanisms are briefly introduced, and the latest development of OPDs for improving the key performance merits is reviewed. Finally, the trials of OPDs for various applications including wearable medical diagnostics, optical imagers, spectrometers, and light communications are reviewed, and both the promises and challenges are revealed. Graphical Abstract

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Section: Wearable Medical Diagnosticsmentioning

confidence: 99%

Organic photodiodes: device engineering and applications

Shan

Hou

Yin

et al. 2022

Front. Optoelectron.

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“…It is essentially a process of generating a signal output (luminescence) from one or more inputs (such as incident light, external force, electrical power supply, etc.) through physical principles encoding 60 . Through the method of multiple masks design and fabricating processes shown in Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

A flexible organic mechanoluminophore device

Zhang

Wang

et al. 2023

Nat Commun

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A flexible mechanoluminophore device that is capable of converting mechanical energy into visualizable patterns through light-emission holds great promise in many applications, such as human-machine interfaces, Internet of Things, wearables, etc. However, the development has been very nascent, and more importantly, existing mechanoluminophore materials or devices emit light that cannot be discernible under ambient light, in particular with slight applied force or deformation. Here we report the development of a low-cost flexible organic mechanoluminophore device, which is constructed based on the multi-layered integration of a high-efficiency, high-contrast top-emitting organic light-emitting device and a piezoelectric generator on a thin polymer substrate. The device is rationalized based on a high-performance top-emitting organic light-emitting device design and maximized piezoelectric generator output through a bending stress optimization and have demonstrated that it is discernible under an ambient illumination as high as 3000 lux. A flexible multifunctional anti-counterfeiting device is further developed by integrating patterned electro-responsive and photo-responsive organic emitters onto the flexible organic mechanoluminophore device, capable of converting mechanical, electrical, and/or optical inputs into light emission and patterned displays.

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“…Over the past few years, substantial efforts have been devoted to develop dual functional or multiple functional optoelectronic devices. , For example, perovskite diodes have been demonstrated with dual functionality of light emitting and light detecting, which were further applied in wearable LiFi communication and bidirectional optical transmission. , InGaN/GaN multiple-quantum-well (MQW)-based diodes have also been presented to perform selectable functionalities with emission and detection in the visible region. , With a double heterojunction design, the CdSe-based quantum dot (QD) light-emitting diode (LED) was shown with efficient photodetection and light emission within a single device . A multifunctional optoelectronic device using an asymmetric active layer structure was also reported to be able to perform multiple functions .…”

Section: Introductionmentioning

confidence: 99%

Multifunctional and Multicolor Perovskite-CdSe Quantum Dots Diodes for Pulse Oximetry

Zheng

Zhu

Luo

et al. 2023

ACS Appl. Mater. Interfaces

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A conventional pulse oximeter system is composed of two light sources with different peak emission wavelengths and a photodetector. Integrating these three independent components into one single device will absolutely simplify the system design and create a miniaturized size of the product. Here, we demonstrate a bilayer perovskite-CdSe quantum dot (hereafter perovskite-QD) diode capable of voltage-tunable green/red emission and photodetection. The proposed diode also presents an intriguing feature of simultaneous light emission and detection, which is explored as regards the diode being used as a photoconductor when the positive bias is larger than the built-in voltage. The multifunctional and multicolor diode is further employed in a reflective pulse oximeter system, as either the multicolor light sources or the sensing unit in the system provide accepted and trustful results for heart rate and arterial blood oxygenation. Our work provides a possible avenue for the simplification of the pulse oximetry with a compact and miniaturized design in the future.

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A flexible, multifunctional, optoelectronic anticounterfeiting device from high-performance organic light-emitting paper

Cited by 40 publications

References 43 publications

Organic photodiodes: device engineering and applications

Organic photodiodes: device engineering and applications

A flexible organic mechanoluminophore device

Multifunctional and Multicolor Perovskite-CdSe Quantum Dots Diodes for Pulse Oximetry

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