Doped Polycrystalline Silicon Solar Wafers from Japan
Polycrystalline silicon wafers that have been doped with phosphorus or boron to enhance electrical conductivity, primarily used in photovoltaic solar cell production. These wafers fall under HTS 3818.00.0020 as chemical elements doped for use in electronics, specifically in disc or wafer form for semiconductor applications. The doping process introduces impurities to create p-n junctions essential for solar energy conversion.
Duty Rate — Japan → United States
Rate breakdown
Import Tips
• Obtain certificates of analysis confirming doping levels and purity to meet US semiconductor import standards
• Comply with REACH-like regulations for chemical dopants; declare wafer thickness and resistivity accurately
• Avoid misclassification by specifying polycrystalline structure; use ESD-safe packaging to prevent damage