Transparent Flexible Optoelectronic Devices

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A:Physics".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 1911

Special Issue Editor


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Guest Editor
Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310058, China
Interests: flexible optoelectronic devices; transparent optoelectronic devices; photothermal conversion; radiative cooling

Special Issue Information

Dear Colleagues,

Transparent flexible optoelectronics, as an important branch of flexible electronics, is an emerging technology and has attracted increasing attention recently. Transparent flexible optoelectronic devices are not only bendable and stretchable mechanically, but also optically transparent, usually in the visible regime. Therefore, they are more flexible and have potentially much wider applications, compared to traditional optoelectronic devices. They can be easily integrated to existing objects with different shapes, maintaining the visual appearance while making the existing objects more intelligent. They can be designed to have various different functions and thus can be applied widely in, e.g., advanced displays, healthcare, wearable electronics, smart homes, advanced energy, etc. However, to make an optoelectronic device both mechanically flexible and optically transparent while maintaining its high performance is quite challenging, requiring novelty in an interdisciplinary way and collaborative efforts of experts in the fields of physics, chemistry, material, optics, electronics, etc. Optical transparency in the near- and/or mid-infrared regimes is equally as important as visible transparency and allows other applications, e.g., in night vision and optical communication. However, endowing a flexible electronic device with this optical property is more challenging and has not attracted much attention. Accordingly, this Special Issue seeks to showcase research papers, communications, and review articles that focus on: (1) novel designs, fabrication, and characterization of transparent flexible optoelectronic devices with different functionalities; and (2) new developments of applying transparent flexible optoelectronic devices of any kind in consumer electronics, healthcare, smart homes, energy, space, defense, or others.

Dr. Liu Yang
Guest Editor

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Keywords

  • transparent flexible optoelectronic devices with different functionalities: design, fabrication, and characterization
  • transparent flexible optoelectronic device applications: consumer electronics, healthcare, smart homes, energy, space, defense, or others
  • transparent or flexible optoelectronic devices and their applications

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Published Papers (1 paper)

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Research

14 pages, 2985 KiB  
Article
High-Performance Low-Voltage Transparent Metal-Semiconductor-Metal Ultraviolet Photodetectors Based on Ultrathin Gold Asymmetric Interdigitated Electrodes
by Jianfeng Huang, Liu Yang and Sailing He
Micromachines 2023, 14(7), 1447; https://doi.org/10.3390/mi14071447 - 19 Jul 2023
Cited by 3 | Viewed by 1584
Abstract
A high-performance, low-voltage, transparent, metal-semiconductor-metal ultraviolet (UV) photodetector (PD) is proposed and experimentally demonstrated, based on gold (Au) asymmetric interdigitated (aIDT) electrodes with thicknesses well below 10 nm. A 7-nm-thick Au film, with a visible transmittance of 80.4% and a sheet resistance of [...] Read more.
A high-performance, low-voltage, transparent, metal-semiconductor-metal ultraviolet (UV) photodetector (PD) is proposed and experimentally demonstrated, based on gold (Au) asymmetric interdigitated (aIDT) electrodes with thicknesses well below 10 nm. A 7-nm-thick Au film, with a visible transmittance of 80.4% and a sheet resistance of 11.55 Ω/sq, is patterned into aIDT electrodes on a ZnO active layer, whose average visible transmittance is up to 74.3%. Meshing the pads further improves the overall transmittance of the device. Among all fabricated devices, the PD with the aIDT finger width ratio of 1:4 performs the best. Very low dark currents are achieved at 0, 0.5 and 1 V, allowing for high responsivities and specific detectivities to the UV light. It is also a fast device, especially under the biases of 0.5 and 1 V. The comprehensive performances are comparable and even superior to those of the reported devices. The asymmetric Schottky junctions induced by the aIDT electrodes under UV illumination are the main mechanism for the low-voltage operation of our transparent PD, which is promising to be applied widely. Full article
(This article belongs to the Special Issue Transparent Flexible Optoelectronic Devices)
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