Simultaneous Enhancement in Visible Transparency and Electrical Conductivity via the Physicochemical Alterations of Ultrathin-Silver-Film-Based Transparent Electrodes

Choi, Jiyun; Bang, Geumhyuck; Lee, Taehyeong; Tran, Vo Thi Bao; Bae, Jong‐Sup; Choi, Dooho

doi:10.1021/acs.nanolett.2c00592

Cited by 15 publications

(3 citation statements)

References 63 publications

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“…Transparent materials have always served a significant function in various fields, including optoelectronic devices, [1,2] food packaging, [3,4] and architectural panels. [5,6] Their remarkable optical performance ensures unobstructed visibility and provides great convenience to people's lives.…”

Section: Introductionmentioning

confidence: 99%

Transparent Nanofibrous Membranes with Optimized Optical Channel Structure for Window Screens

Sun,

Lin,

et al. 2024

Adv Materials Technologies

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Nanofibrous membranes, characterized by their flexibility, high porosity, and tunable structure, are emerging as a promising contender for advanced transparent materials with sufficient breathability and pliability. However, the considerable surface light reflection and internal light scattering of nanofibrous membranes pose a challenging task in achieving transparency. In this study, transparent nanofibrous membranes are fabricated by constructing a topological structure with optimized optical transmission channels, which provide the minimum equivalent thickness to minimize light loss in nanofibrous membranes. The resultant fabricated membrane exhibits a high light transmittance of up to 81%, along with a sufficient porosity of 84% and flexibility. Additionally, the membrane demonstrated effective PM0.3–10 removal efficiency (>91%), low air pressure drops (<110 Pa), high air permeability (≈104 mm s−1), and good waterproof performance. Therefore, the prepared transparent nanofibrous membrane may serve as a transparent air filtration window screen to enhance indoor comfort for people.

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Section: Introductionmentioning

confidence: 99%

Transparent Nanofibrous Membranes with Optimized Optical Channel Structure for Window Screens

Sun,

Lin,

et al. 2024

Adv Materials Technologies

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“…The percolation threshold thickness is controlled by enhancing the wettability of Ag on heterogeneous substrates. Various techniques have been suggested to improve the wettability of Ag, including seed layers, [23][24][25] controlled substrate temperature, [26] plasma treatment, [27,28] extrinsic doping, [29,30] and gas additive. [31,32] Among them, additive oxygen-induced Ag growth can provide high-quality Ag-based TCs with the slightest modification in the fabricating process.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional AZO/Ag(O)‐Based Transparent Conductor for Flexible and Transparent Optoelectronics

Nguyen,

Patel,

Kim

2024

Solar RRL

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Transparent photovoltaics (TPVs) generate electric power by selectively harvesting ultraviolet and/or near‐infrared light. If integrated with electronic products, TPV can sustainably power the products without affecting the user experience. Future electronics require flexibility and lightweight, hence the integrated TPV should also be flexible. To achieve this, a flexible, transparent conducting platform is desirable. A binary transparent conductor (TC) based on Ag(O) has been studied for flexible TPV. The oxygen‐induced Ag growth provides better Ag wettability, enabling a low sheet resistance of 12.5 Ω sq‐1 at an Ag thickness of 6.5 nm. The AZO/Ag(O) binary structure, with an average transmittance value of 86%, has a figure of merit of 17.7 (10−3 Ω‐1), which surpasses conventional TCs such as fluorine‐doped tin oxide (FTO) and indium‐doped tin oxide (ITO). Furthermore, the multilayer design of Ag(O)‐based TC allows interfacial engineering to enhance the performance of TPV. The optimum photovoltaic performance of NiO/ZnO TPV is achieved with an AZO thickness of 12 nm, providing a performance enhancement of 700%. The NiO/ZnO/AZO/Ag(O) device exhibited a stable photovoltaic effect with a consistent open‐circuit voltage value of 0.4 V after numerous bending cycles with a bending radius of 0.7 cm.This article is protected by copyright. All rights reserved.

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“…However, these metals have a high optical loss, which degrades the transparency of the Ag lm. Dielectric wetting layers are helpful to avoid the optical loss of the above metal wetting layers, but the ultimate thinness of Ag lms is still limited because complete wetting of Ag adatoms is di cult due to the greatly larger surface energy of Ag metal compared to its adhesion energy with the dielectric substrates [23][24][25][26] . The above intrinsic limit makes the direct growth of high-continuity Ag lms with ultimate thinness extremely challenging.…”

Section: Introductionmentioning

confidence: 99%

Pushing the thinness and transparency limit of silver films for flexible optoelectronic devices via an ion-beam thinning-back process

Duan,

Ma,

et al. 2023

Preprint

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Silver (Ag) films thinner than 10 nm are ideal candidates for transparent conductors for flexible optoelectronic devices due to their merits of a low sheet resistance (Rs), high transparency and excellent flexibility performance. Further reducing the Ag film thickness theoretically allows higher transparency but in practice leads to reduced transparency and drastically increased sheet resistance because the ultrathin film tends to be noncontinuous and unsmooth. Herein, we developed a thinning-back process to address this dilemma, in which Ag film is first deposited to a larger thickness with high continuity and then thinned back to a reduced thickness with an ultrasmooth surface, both implemented by a flood ion beam. Contributed by the slight implantation of silver atoms into the substrate during the ion-beam sputtering deposition process, high-quality Ag films with a thinned thickness down to 4.5 nm can be obtained with atomic-level surface roughness due to the implantation-induced pinning effect. Enabled by the reduced thickness, high continuity and improved smoothness, the obtained ultrathin Ag films exhibit excellent visible transparency and comparable electrical conductivity to commercial indium tin oxide (ITO). Especially, the ultrasmooth surface allows the lowest optical haze among all existing transparent conductors. As a flexible transparent conductor, the ultrathin Ag films demonstrate outstanding mechanical flexibility due to the ductility of Ag metal. Considering the overall performance of the obtained ultrathin Ag films, this ion-beam-based process presents a promising solution towards the best possible transparent conductor with ultimate thinness and transparency for flexible optoelectronic devices.

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Simultaneous Enhancement in Visible Transparency and Electrical Conductivity via the Physicochemical Alterations of Ultrathin-Silver-Film-Based Transparent Electrodes

Cited by 15 publications

References 63 publications

Transparent Nanofibrous Membranes with Optimized Optical Channel Structure for Window Screens

Transparent Nanofibrous Membranes with Optimized Optical Channel Structure for Window Screens

Multifunctional AZO/Ag(O)‐Based Transparent Conductor for Flexible and Transparent Optoelectronics

Pushing the thinness and transparency limit of silver films for flexible optoelectronic devices via an ion-beam thinning-back process

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