This paper aims for power semiconductor devices characteristics and technologic trait, puts forward a phosphorus diffusion model which applies to power semiconductor devices.

The effects of rapid thermal processing (RTP) upon phosphorus diffusion in silicon during the fabrication of the emitter of solar cell were investigated.

Results show as follows : the soil P diffusion coefficient increases markedly with the increase of soil water content, their relation being described by the correlation of the exponential; the soil P diffusion coefficient increases with the increases of soil clay content; the coefficient also increases with the increase of temperature, with the temperature effect on the soil P diffu.

Simulation analysis on release and dispersion process of liquefied ammonia tank;

Accident of release and dispersion mode in industrial enterprises;

Mechanism of biosorption of reactive brilliant blue KN-R by inactive Aspergillus fumigatus immobilized on CMC beads:Equilibrium,kinetics,diffusion and mass transfer;

First-Principle Calculations of the Adsorption, Dissociation and Diffusion of Hydrogen on the Mg(0001) Surface;

Abnormal diffusion behavior in pure iron subjected to surface mechanical attrition treatment;

The characteristic of scientific Idea diffusion:an analysis to the diffuse of green accounting idea in China;

The results show that the optimum heat preservation temperature is 605℃ as a result of the super-cooling and diffuseness.