Substrates For High-power LED

Substrates For High-power LED

AlSi80(Si-20%Al) alloy substrates for high power LED with CTE matching with sapphire and arsenic gallium,high thermal conductivity, ease of mamufacture,low cost,and etc.

Product Details

High performance Si-20%Al alloy(AlSi80 alloy) substrates for high power LED and other semiconductor applications.

Silicon wafers are a key component in integrated circuits. Integrated circuits are, simply put, a composite of various electronic components that are arranged to perform a specific function. Silicon is the principle platform for semiconductor devices. A wafer, also called a substrate,is a thin slice of semiconductor, such as a crystalline silicon , used in electronics for the fabrication of integrated circuit (IC) and in photovoltaics for conventional, wafer-based solar cells.As a vertical material supplier,Si-30%Al alloy or Si-20%Al alloy chosen are typically used in high-power light emitting diode(LED) .

There are different silicon fabrication methods including the horizontal gradient freeze method, the horizontal bridgeman method, the vertical bridgeman method, the vertical gradient freeze and finally the Czochralski pulling method.During the growth process intentional additions of dopants can be added to the to change the purity of the silicon depending on what the purpose of it will be. These introduced impurities can change the electrical properties of the silicon, which can be useful depending on what the silicon is ultimately being produced for. 

Key features of Si-20%Al alloy substrates:

● CTE compatible with compound semiconductor material;


 High thermal conductivity;

 Comparable lower cost.

Commonly Used Packaging Materials Performance Comparison:  

CTE 25℃ ppm/℃Thermal   Conductivity  25℃W/mKDensity    g/cm³Tensile  Strength MPaYield  Strength  MPaPoisson’s  RatioElongation
Elastic  Modulus   GPa 
AlSi35, FAl-35%Si15.11522.5416595--2.585

With over 10 years' experience,our company strives to provide our customers with leading-edge aluminium-silicon alloy wafer substrates for electronic arena and related demanding industry. These silicon wafers possess plenty advantages,such as CTE matching with sapphire and arsenic gallium,high thermal conductivity,provided wafer with gold bonding layer,ease of manufacture,and etc.Our company is a well-known raw material supplier in Tianjin,a variety of silicon wafers are available from diameter 25.4mm to 150mm.Welcome to contact our team.

Contact Person: Ivy Liu

Telephone Number:+86 18202628922

Mobile Phone:+86 22 29291825