ISSN:
1432-0630
Keywords:
PACS: 61.16.Ch; 78.60.Hk; 78.66.Fd
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
20 cm-3, the background n-typecharacter can be overcompensated, giving rise to a pronounced radiative transition into the acceptor level located at ≈3.2 eV. The absolute peak intensities, however, markedly depend on the site of excitation at the sample surface. This effect allows to distinguish unequivocally between high-quality and defect-rich film regions, also offering the opportunity to correlate near-surface optical properties with morphological features. By adding 10% Al, the resulting crystal alloy exhibits a wider energy-band gap which is reflected in a blue shift of the respective STM-excited luminescence signal.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003390051166
Permalink
