The sphere of Transparent Conductive Oxide (TCO) continues to expand with a growing demand for new materials that have low resistivity and high trans
The sphere of Transparent Conductive Oxide (TCO) continues to expand with a growing demand for new materials that have low resistivity and high transparency over prolonged wavelength ranges. TCOs are opening new doors for excellent-performing devices based on p-n junctions.
The most popular TCO material options include indium tin oxide (ITO), fluorine-doped tin oxide (FTO), and aluminum-doped zinc oxide (AZO). Their unique features make them ideal for a variety of applications, such as LCD displays, PV solar cells, infrared detectors, touch panel contacts, electrochemical deposition tools, energy-saving windows, and more.
Given a wide range of applications, it is crucial to understand the best TCO options available. So, let’s get started!
1. Indium Tin Oxide (ITO) Coated Glass
ITO glass belongs to a group of TCO glasses, with major properties like low sheet resistance and high transmission. It is mainly used in research and development, heterojunction solar cells, and other thin solar cells due to its transparency and high conductivity. It works stably under atmospheric conditions, and abrasion tolerance, and is also mechanically hard and resistant to high temperatures.
2. Fluorine-doped Tin Oxide (FTO)
FTO glass is used in the production of transparent electrodes for thin-film photovoltaics, such as amorphous silicon, dye-sensitized solar cells, and hybrid perovskites. It can be used for various applications, including touch screen displays, heated glass, electromagnetic interference, anti-static coating, and LEDs.
With key properties like low surface resistivity, scratch, and abrasion-resistant, high optical transmittance, and withstand high temperature, it can suit numerous applications and chemical insertion.
3. Aluminum-doped Zinc Oxide (AZO)
AZO is among the most preferred transparent conductive oxide materials, regarded for its outstanding optical and electrical properties. AZO glasses can be used in thin-film solar cells, OLEDs, electrochromic glass, flat panel electrodes, gas sensors, etc. It makes it certain to obtain a wide range of sheet resistance by changing deposition thickness and parameters.
Since substrate heat isn’t needed, AZO becomes a great option for polymer and substrates that are vulnerable to temperature. Apart from its high chemical and mechanical stability, it is an economical option and can replace ITO in any application.
TCOs are electrically-conductive materials used for many applications, such as flat panel displays, LEDs, optoelectrical interfaces, film solar cells, touch screens. ITO is a widely used TCO material with excellent properties like low resistivity and high transparency. But it is expensive, that’s why AZO is utilized as a better alternative.
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