The Various Applications of Sapphire Substrate

by Kristen White Blogger

Due to their consistent dielectric and high-quality crystalline structure, sapphire wafers are especially attractive for the laser industries. This has led to the growing use of blue laser diodes with sapphire substrates, whereas today's RF switch applications are focused on Sapphire

Substrate Composition.

It is also widely used to manufacture high voltage and frequency devices where thermal conductivity, very stable dielectric constant, and low loss properties make it possible to operate reliably under very harsh conditions. It is also too optical in a large variety of wavelengths. Know Silicon Wafer Price Online, which is primarily used by producers of sapphire, are divided into three types:

1. C-Plane sapphire substrate for LED

It is an LED sapphire substratum widely used by many industries for GaN growth, which has mature and relatively low cost, stable physical and chemical property, mainly because of the sapphire wafers growth along the C axis and the technology is mature and stable when epitoxy is performed in the C axis.

The substrate of C-plane sapphire is typically used. In 1993, Professor Akasaki of Japan and Dr Nakamura Shuji, who were at that time in Nichia, broke through the problems of lattice mismatch (buffer layer) between InGaN and sapphire substrate, activation of p-type material, etc. Finally, Nichia was the first to develop blue LEDs at the end of 1993.

2. R-plane or M-plane sapphire substrate for LED

To increase luminous efficiency, it mainly grows non-polar/semi-polar epitaxial GaN films. The c-axis is the polar axis of GaN, which contributes to a strong integrated electrical field in the active quantum layer of the GaN-based system, while the luminous efficiency is lowered. The c-axis is the polar one of GaN, normally formed on the sapphire substratum. Therefore, this physical phenomenon can be overcome, and luminescence efficacy improves by producing non-polar GaN epitaxy.

3. Pattern Sapphire Substrate (PSS)

Nanoscale-specific regular microstructure patterns are designed for the control of the light output type of LEDs on the sapphire substrate, and the difference between GaN rising in the sapphire substrate can be reduced simultaneously to improve the epitaxy quality, increase the internal quantum efficiency of LEDs and increase the effectiveness of light and epitaxy.

With high temperatures, high strength, strong electrical isolation, and a low dielectric loss, sapphire substrates are suitable for LED and non-LED applications. In LED lighting, the Sapphire Substrate Composition helps prevent the spread of stray currents induced by radiation to nearby circuit components. The LED lights are also available with their crystal structure at a wider angle of the beam. The sapphire substrate's high strength makes it more scratch-resistant and suitable for glasses, buttons, and displays for non-LED applications such as smartphones.

Recently, there has been an increase in the use of silicon and GaN substrates as they can combine electrical and LED optical components, thereby increasing the performance of LED products. So you need to know Silicon Wafer Price Online. Silicon and GaN substrates can only be used in more advanced applications and have little chance for Sapphire substrate.