Results of an investigation of some of the optical and electrical properties of diamond are described. The work included both semiconducting and insulating diamonds. After the Introduction in Chapter 1, the background for thermoluminescence (TL) work, including the development of some theoretical aspects of the correlation between TL and thermally stimulated currents (TSC) is presented in Chapter 2. The next chapter (Chapter 3) deals with the TL of semiconducting diamonds, including the observation of blue and red emitting glow peaks, and their characteristics. Chapter 4 deals with the decay of the phosphorescence at 77K in UV excited semiconducting and insulating diamonds. Chapter 5 deals with the photovoltaic effect in semiconducting and insulating diamonds and its dependence on wavelength. Chapter 6 deals with the electroluminescence (EL) of semiconducting diamonds. Lastly, Chapter 7 discusses electrically excited thermoluminescence in semiconducting diamonds.
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