Figure 5 .
PL spectra of powder L9 after HWA treatment at 9 K. The gate time was 50 μs for both spectra. The strongest PL spectrum was recorded during a laser pulse (duration, 12 ps; wavelength, 266 nm) and is labeled as ‘PL’. The other spectrum was taken 50 μs after the end of the laser pulse.
Gelloz et al. Nanoscale Research Letters 2012 7:382 doi:10.1186/1556-276X-7-382