The long-term transient spectra of heavily Mg-doped GaN have been investigated. As the excitation power density increased, the broad Mg-induced emission band showed blue-shift revealing characteristic of donor-acceptor pair (DAP) recombination. We also observed an unusually slow intensity decay. The characteristic time constants range from several tenths to a few hundred seconds for emission between 360 and 460 nm. Our results are interpreted in terms of metastability due to compounded effects of differential DAP population and recombination rates and uneven acceptor distribution.
|頁（從 - 到）||521-526|
|期刊||Proceedings of SPIE - The International Society for Optical Engineering|
|出版狀態||Published - 7月 2000|
|事件||Optoelectronic Materials and Devices II - Taipei, Taiwan|
持續時間: 26 7月 2000 → 28 7月 2000