Solar Grade Silicon Nitride Powder

Solar grade silicon nitride powder, as release agent, is used to spray to the surface of fused silica crucibles. It is the necessities for the production of multi-crystal ingots.

Solar-grade silicon nitride powder is applied to thin-film solar cells. After coating the silicon nitride film using the PECVD process, it can not only as an antireflection film to reduce the reflection of incident light, but also during the deposition process of silicon nitride thin films, the reaction products, hydrogen atoms will go into the silicon nitride film and silicon wafer to have played a role of passivating defects.

The solar grade silicon nitride powder produced by Sidley Company is synthesized through special nitridation process of silicon powder which ensures the powder with the character of high purity, narrow particle size distribution and increases the success rate of ingot demoulding. The products are widely used by many well-known companies at home and abroad..
Sidley Company attaches great importance to new product innovation and R & D work. We recently have developed the upgraded silicon nitride powder with the model of TS and sintering free silicon nitride powder with the model of TY.

Specifications of Solar Grade Silicon Nitride Powder

TX-Q

TS

TY

Alpha phase %

>90%

>90%

>90%

Fe

<20ppm

<10ppm

<10ppm

O2

<1.6%

<1.6%

<1.6%

N

>38.5%

>38.5%

>38.5%

Al

<20ppm

<10ppm

<10ppm

Ca

<10ppm

<6ppm

<6ppm

Free Silicon

<0.1%

<0.1%

<0.1%

D50

<1.5 um

<1.0 um

<1.0 um

 

Typical Chart of particle size distribution of TX-Q

Typical Chart of particle size distribution of TX-Q  

Typical Chart of particle size distribution of TS

Typical Chart of particle size distribution of TS

SEM picture of model TX-Q

SEM picture of model TX-Q