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Why to Use Indium Tin Oxide in Electrodes? Cheap, Flexible And Recyclable

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Update time : 2020-06-16 09:22:06
ITO is an N-type oxide semiconductor-indium tin oxide. The ITO film, which is an indium tin oxide semiconductor transparent conductive film, usually has two performance indicators: resistivity and light transmittance.

As a nano-indium tin metal oxide, it has good conductivity and transparency and can cut off harmful electronic radiation, ultraviolet rays, and far-infrared rays. Therefore, indium tin oxide is usually sprayed on glass, plastic, and electronic display screens as a transparent conductive film, while reducing harmful electronic radiation and ultraviolet and infrared.

Australian researchers have demonstrated the powerful potential of a new type of flexible, recyclable Electrode that can be used to make cheaper solar cells, touch screens, wearable "electronic skins," and next-generation responsive windows.

These materials are made using simple and cost-effective manufacturing processes and can replace traditional transparent conductive oxides, such as indium tin oxide (ITO), which is an essential component of almost all thin-film solar cells, laptop screens, and Smartphone displays, but due to their scarcity, their prices have been steadily rising and are inherently limited by their brittleness.

In addition to cheaper and more efficient photovoltaic solar cells, computer monitors, and smartphone touch screens, in the long run, it can also reduce household electricity bills. Electrodes may be used to make smart windows, thereby causing electrical changes in color and color. Become opaque or transparent.
Dr. Eser Akinoglu, the author of the ARC Excitonic Science Center of Excellence, said: "The performance of this material is excellent, with a light transmittance of more than 90% and a high conductivity comparable to the ITO benchmark."

He looked forward to the potential commercial applications of this research, adding: "In principle, you should be able to integrate this technology into industrial roll-to-roll printing."

Researchers at the University of Queensland and the ARC Center for Excellence in Excitonic Science used a technique called nanosphere lithography to achieve this deposition method, which involves evaporating the desired material combination into nanoscale patterns and publishing their findings in " Advanced Functional Materials" magazine.

The dielectric/metal/dielectric (D/M/D) nanomesh electrode produced by this method has precisely controlled perforation size, line width, and uniform pore distribution, resulting in high transmittance and low sheet resistance ( Can minimize voltage loss) and excellent bending strength.

The lead author of the University of Queensland, Dr. Qiu Tengfei, said: "We provide a strategy to make the shadow area of ​​the metal nano grid highly transparent by integrating the D/M/D structure into the nano grid system. With D/M, The nano-membrane transparent film has not studied the M/D layered structure before. Simple and cost-effective nanosphere lithography technology can be used to manufacture various layered nanomesh materials."

Moreover, in some flexible electrochromic applications, the Electrode even exhibits the ability to be recycled, thereby enhancing the qualification of the mechanism as a possible sustainable alternative to more mature manufacturing materials and processes.

Dr. Akinoglu talked about this recyclable feature: "This means that if the device you manufacture, like an electrochromic window, may function poorly at the end of its useful life, it can be disassembled and rinsed Electrode and then reuse it for other purposes equipment."
 
One of the researchers' next steps is to explore the potential shown in this study in order to create similar results on a larger scale and achieve similar results with commercially viable capabilities in the long run.

Dr. Akinoglu said: "You want to increase transparency, you want to reduce sheet resistance, and you want to increase the ability to withstand mechanical stress and flexibility."

"And you want to be able to manufacture it on a large area at low cost."
Senior author Professor Wang Lianzhou added: "This work will stimulate the design of transparent conductive films with novel functions such as conductivity and flexibility, and provide an excellent platform for the next generation of environmentally friendly optoelectronics."

Indium tin oxide (ITO) material has an irreplaceable role as a pixel electrode material inactive drive flat panel displays, especially liquid crystal displays, due to its excellent photoelectric properties. In theory, ITO, as a semiconductor material, is also suitable for preparing the active layer of a thin film transistor (Thin Film Transistor, TFT).

Both the electrode and the active layer use thin-film transistors of ITO material, and no other metal oxide semiconductor targets are needed in the preparation process, which can reduce the process cost and technical cost. ITO materials have higher carrier concentration and electron mobility, and TFT devices with ITO as the active layer can theoretically obtain higher mobility.

Indium tin oxide (ITO) is mainly used to produce liquid crystal displays, flat panel displays, plasma displays, touch screens, electronic paper, other applications, organic light-emitting diodes, and solar cells antistatic coatings and transparent conductive coatings for EMI shielding.

Indium tin oxide (ITO) is also used in various optical coatings. The most notable ones are infrared-reflective coatings (heat mirrors) in architecture, automobiles, and sodium vapor lamp glass. Other applications include gas sensors, anti-reflection films, and Bragg reflectors for VCSEL lasers.

 
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