Figure 5From: Luminescence of mesoporous silicon powders treated by high-pressure water vapor annealingPL 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.Back to article page