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Thallium intentional

The presence of lattice defects and/or intentionally placed impurities in the alkali halide crystal will cause the formation of local energy levels in the forbidden gap, called traps or activator centers. Figure 18.19 shows the energy levels of an alkali halide crystal, including the activator centers and traps. (Atomic thallium is a common activator for alkali halide crystals.)... [Pg.561]

See other pages where Thallium intentional is mentioned: [Pg.187]    [Pg.47]    [Pg.226]    [Pg.228]    [Pg.25]    [Pg.178]    [Pg.857]    [Pg.167]    [Pg.167]    [Pg.169]    [Pg.634]   
See also in sourсe #XX -- [ Pg.226 , Pg.227 ]



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