Ultra-Smooth, Fully Solution-Processed Large-Area Transparent Conducting Electrodes for Organic Devices

Jin, Won‐Yong; Ginting, Riski Titian; Ko, Keum‐Jin; Kang, Jae‐Wook

doi:10.1038/srep36475

Cited by 51 publications

(42 citation statements)

References 49 publications

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“…It should be noted that there has also been a report that PEDOT:PSS has not been detrimental to the stability of silver nanowires. 23 Understanding the exact nature of degradation in other metals/electrodes is therefore of key importance for the development of organic semiconductor devices based on PEDOT:PSS and its analogues.…”

Section: Introductionmentioning

confidence: 99%

The damaging effects of the acidity in PEDOT:PSS on semiconductor device performance and solutions based on non-acidic alternatives

2020

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Section: Introductionmentioning

confidence: 99%

The damaging effects of the acidity in PEDOT:PSS on semiconductor device performance and solutions based on non-acidic alternatives

2020

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“…Generally, the PCEs of the ME-TCE-based devices are much higher than the PEDOT:PSS-based [23] device, which exhibited a PCE of 3.29%. Among the ME-TCE-based devices, ME-TCE (p = 190 µm) achieved the highest PCE of 6.43%, which is almost twice as high as the PEDOT:PSS sample.…”

Section: Resultsmentioning

confidence: 94%

Scalable, All‐Printed Photocapacitor Fibers and Modules based on Metal‐Embedded Flexible Transparent Conductive Electrodes for Self‐Charging Wearable Applications

Jin

Ovhal

Lee

et al. 2020

Advanced Energy Materials

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of a lightweight, flexible, self-charging device with stable and sustainable power output. To tackle this issue, researchers are committed to assembling a flexible, uninterruptible, self-charging system by integrating various flexible energy-harvesting and energy-storage devices, giving rise to novel photocapacitor-integrated devices. Individually, the device application of flexible, fabric/stripe-type photovoltaic (PV) cells and supercapacitors in futuristic textile circuits has been extensively explored. These fiber/stripe-based devices can be easily integrated and woven together into garments with orderly patterns, such as stripes or mosaics, without compromising the wearing comfort and aesthetic design of the garment itself. [5-7] For flexible energy-harvesting devices, researchers have developed highly efficient and flexible PV cells, such as dyesensitized, [5] organic, [8] and perovskite [9] solar cells, which are environmentally benign. Compared to dye-sensitized and perovskite solar cells, organic solar cells (OSCs) exhibit superior device flexibility and higher power conversion efficiency (PCE) retention under extreme mechanical deformation/ distortion. They have these benefits because they are based on organic polymers, which are non-brittle in nature. Additionally, OSCs are low-cost, printable, reproducible, and lightweight, rendering them compatible with futuristic wearable textile applications. [1,3,5,10-13] However, conventional film-based OSCs exhibit flexibility only in a direction perpendicular to the film and are not compatible with the weaving process for wearable electronic applications. By virtue of their diverse fabrication techniques and structural designs, the dimensions of flexible OSC devices can be tuned from 2D (film) to 1D (fibers/stripes) by further scaling down the y-axis of the conventional film-based device. 1D fiber/ stripe-shaped devices that are fully compatible with the weaving process can then be obtained. Stripe-shaped OSCs have inherent advantages over planar OSCs, such as incredibly high mechanical flexibility, which means they can conform to arbitrary shapes like the human body. [14] Furthermore, after the weaving process, the relative shadowed active area is less for stripe-shaped device structures as compared with fiber-shaped geometries. On another note, flexible supercapacitors (F-SCs) have been used as energy storage systems in futuristic smart electronics The popularity of wearable smart electronic gadgets, such as smartphones, smartwatches, and medical sensors, is inhibited by their limited operation lifetime due to the lack of a sustainable self-charging power supply. This constraint can be overcome by developing a flexible, self-charging photocapacitor that can synchronously harvest and store energy. Here, ultrathin, all-printed, and metal-embedded transparent conducting electrodes (ME-TCEs) are designed for the fabrication of large-area, flexible organic solar cells (F-OSCs) and flexible supercapacitors (F-SCs). Stripe-shaped F-OSCs (SF-OSCs) and F-SCs (SF-SCs) ...

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“…As a result, the effects of wavelength and direction on PL enhancement are negligible. Since the PL enhancements do not depend on periodicity, the microspheres can be useful in wearable and stretchable devices 52,53 . Comparing to the ordered structures 36,47 , randomly dispersed spheres are much easier to fabricate.…”

Section: Resultsmentioning

confidence: 99%

Enhancing photoluminescence of carbon quantum dots doped PVA films with randomly dispersed silica microspheres

Zhao

Wang

Gao

et al. 2020

Sci Rep

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As a kind of excellent photoluminescent material, carbon quantum dots have been extensively studied in many fields, including biomedical applications and optoelectronic devices. They have been dispersed in polymer matrices to form luminescent films which can be used in LEDs, displays, sensors, etc. Owing to the total internal reflection at the flat polymer/air interfaces, a significant portion of the emitted light are trapped and dissipated. In this paper, we fabricate free standing flexible PVA films with photoluminescent carbon quantum dots embedded in them. We disperse silica microspheres at the film surfaces to couple out the total internal reflection. The effects of sphere densities and diameters on the enhancement of photoluminescence are experimentally investigated with a homemade microscope. The enhancement of fluorescence intensity is as high as 1.83 when the film is fully covered by spheres of 0.86 $${\boldsymbol{\mu }}$$µm diameter. It is worth noting that the light extraction originates from rather the scattering of individual spheres than the diffraction of ordered arrays. The mechanism of scattering is confirmed by numerical simulations. The simulated results show that the evanescent wave at the flat PVA/air interface can be effectively scattered out of the film.

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Ultra-Smooth, Fully Solution-Processed Large-Area Transparent Conducting Electrodes for Organic Devices

Cited by 51 publications

References 49 publications

The damaging effects of the acidity in PEDOT:PSS on semiconductor device performance and solutions based on non-acidic alternatives

The damaging effects of the acidity in PEDOT:PSS on semiconductor device performance and solutions based on non-acidic alternatives

Scalable, All‐Printed Photocapacitor Fibers and Modules based on Metal‐Embedded Flexible Transparent Conductive Electrodes for Self‐Charging Wearable Applications

Enhancing photoluminescence of carbon quantum dots doped PVA films with randomly dispersed silica microspheres

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