Hydrogen Interacting with Deep Level Centers and Dislocations

Hydrogen Interacting with Deep Level Centers and Dislocations 

What makes this acceptor interesting is that its concentration can be varied reversibly over a wide range. Thermal quenching and annealing experiments showed that the acceptor must be due to a center that undergoes dissociation/recombination reactions. The following arguments led to 

The reversible concentration changes can be explained with a reaction between V2H and H. The maximum concentration of V2H is approximately 1013 cm-3 and is low compared to the total hydrogen concentration. Based on these general arguments and experimental observations, the following reaction has been proposed  

It would be desirable to obtain symmetry information on V2H. All efforts to generate optical spectra of ground-to-bound excited state hole transitions have failed so far. Because of the low concentration of V2H, we attempted to use PTIS. This technique works well if the bound excited state lifetimes are long so that a phonon can interact with the bound hole 

Hydrogen Passivation of Deep Level Impurities and Defects 

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IV. Hydrogen Interacting with Deep Level Centers and Dislocations... 

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