Hydrogen Bromide

It plays a core role in dry etching processes, including: Etching Silicon-Based Materials: Mixed with other gases (e.g., chlorine, oxygen) to precisely etch silicon and silicides (SiGe, Si3N4) on wafers, forming chip circuit patterns. Doping Assistance: Serves as a bromine source in specific processes to adjust the electrical properties of semiconductor materials.The key differences from industrial grade are: Purity Requirements: Electronic grade typically reaches ≥99.999% (5N) or even 99.9999% (6N), with strict control over metal ions (Na, K, Fe), moisture, and organic impurities. Industrial grade is usually ≤99.9% and has no strict impurity requirements. Application Scenarios: Electronic grade is used in semiconductor wafer etching and doping processes; industrial grade is mainly used in pharmaceuticals, dye synthesis, and other non-precision fields. Production Standards: Electronic grade must comply with strict semiconductor industry quality standards (e.g., SEMI standards), while industrial grade only meets general chemical product standards.