Abstract

The control of impurity is crucial to the ingot quality and yield in the directional solidification of multi-crystalline silicon for solar cells. The major impurities, such as metals, are mainly from the quartz crucible and the silicon nitride coating. The use of high-purity materials mitigates the problem, but it also increases the cost. Another way is to use diffusion barriers between silicon and these materials to reduce the incorporation of impurities. In this study, polysilazane and barium oxide coatings with different layer configurations were considered. With the diffusion barrier layer, the lifetime of the ingot was improved and the red zone was reduced. The wetting behaviors of these diffusion barriers in contact with silicon were also discussed.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.