Study on the theorem of paricles monitorring for wet bench of 12-inch process

For the manufacturing of 12-inch wafer process flow, it is important to completely suppress particles and contamination created on the silicon wafer surface. The tradition concept for cleaning need was used chemical content (APM, ammonia and hydrogen peroxide mixtures) to play a major role. Unfortunately, the SC-1 (APM) had negative effect on surface damage. In recent years, it has been modified to incorporate a more dilute solution in order to reduce surface micro-roughness caused by ammonium hydroxide. In this paper, a new thinking was proposed to use DI water quick dump rinse (QDR) mode change from conversation set-up to an improvement mode. A modified recipe with modified using DIW can totally remove the particle during process.