摘要
The photoluminescence of GaAs_(0.15)P_(0.85):N has been studied at 77K under hydrostatic pressure.The NN1 emission is clearly observed when P>l0kbar.This result indicates that pressure enhances the thermally assisted Nx→NN_(1) exciton transfer.The pressure behaviors of N_(x) and NN_(1) levels are analysed.
基金
Project supported by the National Science Fundation of China.