Sapphire substrate for blue and green LED components

Product Description

The materials used in blue and green light-emitting diodes are mainly GaN. Early GaN research has not made significant progress, mainly because it has been unable to find a substrate that matches the lattice constant of GaN, resulting in the density of defects in the epitaxial crystal. Too high, until 1991, Nichia Co. researcher S. Nakamura used low-temperature growth of an amorphous buffer layer of GaN on a c-axis sapphire substrate, and then grown it at high temperature to obtain the same mirror-like surface. For GaN, the problem of the epitaxial part has obtained a major breakthrough at this time.

At present, GaN components of high-brightness blue-green high-light-emitting diodes are mainly grown on Sapphire Wafer, the maximum size can reach 6 inches, and can provide different axial requirements including c, m, a, and r. In addition, to meet customer needs, other next-generation substrates have also been developed.

Technical Specification

Sapphire(Al2O3) Wafer

Sapphire flat sheet specifications

Product advantages

Pattern Sapphire Substrate (PSS): The sapphire substrate is designed to produce nano-scale specific regular microstructure patterns by growth or etching to control the output light form of the LED. At the same time, it can reduce the defects of the GaN grown on the sapphire substrate, improve the quality of the epitaxy, and improve the internal quantum efficiency of the LED and increase the light extraction efficiency.

It has the characteristics of high sound velocity, high temperature resistance, corrosion resistance, high hardness, high light transmittance, high melting point (2045°C), etc.

Chongqing Silian Optoelectronics Science & Technology Co., Ltd was founded by China Silian Instrument Group Co., Ltd for the development of LED industry. After the acquisition of Honeywell Sapphire business, the company has become China’s first enterprise with the world’s top-quality large-sized sapphire production and R&D capabilities. The company has the world’s leading high-power sapphire substrates technology. Taking the excellent oppotunity, the company has developed LED packaging, LED lighting applications and other industries in succession to project extension in LED industrial chain. Based on the core-technology of sapphire substrates, we have created an area of 1000 mu (approximately 66.7 hectares) to develop LED industrial china from basic materials to high end products and become the most completed and largest semiconductor energy-efficient in dustrial base in Western China.

Maintaining the enterprise spirit of “People oriented, Natural Selection, Inheriting innovation and Pursuit of Excellence” and the customer tenet of “Silian is guided through customers and stands with customers”, we are committed to provide customers with high-quality sapphire chip substrates, optical window materials, LED packaging devices, and high efficiency LED lighting desplay high end products and creating value for customers.

Silian the international large-sized sapphire substrates standards lauching member.

Acquiring the completed production line from sapphire crystal growth to substrate processing.

We have the qulity advantages of high purity, high consistency and high repeatability.

Cooperating with world top level LED chip manufactures.