TCO Glass (ITO FTO glass)

TCO glass (Transparent Conducting Oxide) is a special type of glass with a thin film of transparent conductive oxide (such as indium, tin, or zinc oxide) deposited on its surface using physical or chemical methods. It possesses excellent light transmittance and conductivity, and is widely used in thin-film solar cells, flat panel displays, touchscreens, and LEDs.

TCO glass is classified into ITO, FTO, and AZO according to the coating material.

1. ITO (Indium Tin Oxide)

- Features: Best conductivity, high transmittance (≥85%), dense film, easy to etch

- Disadvantages: Indium is rare and expensive; not resistant to high-temperature plasma, not resistant to acids and alkalis

- Process: Offline magnetron sputtering

2. FTO (Fluorine-Doped Tin Oxide)

- Features: High temperature resistance, acid and alkali resistance, high hardness, low cost, easy laser etching

- Disadvantages: Conductivity and transmittance are slightly lower than ITO

- Process: In-line CVD (High-Temperature Chemical Vapor Deposition)

3. AZO (Aluminum-Doped Zinc Oxide)

- Features: Abundant raw materials, low cost, high transmittance, high near-infrared transmittance

- Disadvantages: Softer film, poor moisture resistance, easily hydrolyzed

- Process: Magnetron sputtering

Choose the appropriate TCO glass based on the application scenario.

ITO Glass

- Touchscreens: Mobile phones, tablets, laptops, touch panels

- Displays: LCD, OLED, LCD panel electrodes

- Optoelectronics: OLED lighting, optical sensors, anti-static glass

- Not suitable for: Thin-film photovoltaics (unstable at high temperatures)

FTO glass (mainstream in photovoltaics)

- Thin-film photovoltaics: Amorphous silicon, cadmium telluride, CIGS cell front electrodes

- BIPV: Photovoltaic curtain walls, roofs, skylights

- Building applications: Low-E, electrically heated anti-fog, electromagnetic shielding

- Photocatalysis: Self-cleaning glass, environmentally friendly biodegradable coating substrates

AZO glass

- New photovoltaic technologies: Perovskite cells, tandem cells (great potential)

- Flexible devices: Flexible displays, thin-film batteries (potential)

- Infrared optics: Heat reflection, infrared windows

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