Figures

Figure 1

The steady-state PL spectrum of the 2.8 eV band in p-type GaN:Mg measured at low temperature (16K)

Figure 2

Time-resolved PL spectra of the 2.8 eV emission band measured at low temperature for different time delays. The peak position at various delay times is indicated with an arrow. A shift to lower energies and narrowing of the band can be seen as the time delay is increased.

Figure 3

Photoluminescence intensity time decay for the 2.8 eV blue emission band plotted on a logarithmic scale. The calculated time decay from the T-H model for acceptor Bohr radius of 5 Å is shown as indicated by the solid line. The fitting parameters are N=(5±1)x1019 cm-3, aA=5 Å and Wmax=(3±1)x107 sec-1.

© 2001 The Materials Research Society