Calculated Energy Levels and Optical Absorption inn-Type Si Accumulation Layers at Low Temperature

1974 ◽  
Vol 33 (16) ◽  
pp. 960-963 ◽  
Author(s):  
Frank Stern
Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 503
Author(s):  
Éva Tichy-Rács ◽  
Ivo Romet ◽  
László Kovács ◽  
Krisztián Lengyel ◽  
Gábor Corradi ◽  
...  

The energy levels of Dy3+ ions have been determined in lithium yttrium borate (Li6Y(BO3)3) single crystals in a wide spectral range between 3000 and 40,000 cm−1 using optical absorption and luminescence spectroscopy, which also allow for an analysis of the ground state. The crystal field splittings of the 6H15/2 ground state and all excited states up to the 4F7/2 manifold were obtained at a low temperature, based on luminescence (T = 4.2–78 K) and absorption (T = 8–100 K) measurements, respectively. The numbers of experimentally observed Stark sublevels are in agreement with those expected theoretically for Dy3+ ions occupying a single low symmetry (C1) site.


Author(s):  
N. Mironova ◽  
V. Skvortsova ◽  
A. Kuzmin ◽  
I. Sildos ◽  
N. Zazubovich

The electron spin resonance and optical absorption spectra of crystals of KCl containing silver impurity ions were examined after the crystals had been X -irradiated at 77 °K. It is shown that the silver impurity ions act as traps for both electrons and positive holes. A description is given of the annealing behaviour of the crystals after low-temperature irradiation.


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