Selected thermoluminescent properties of CVD diamond film

In the present work, some thermoluminescent properties of chemically vapour deposited (CVD) polycrystalline diamond films are investigated. After radiation, two TL peaks at least located at 350 and 540 K are observed. After depletion of the low temperature peaks, the 540 K TL peak is isolated and then analysed by different methods; an energy level at around 0.9 eV is found. It is shown that, when it is grown under particular conditions, CVD diamond possesses some dosimetric properties like TL sensitivity to gamma radiations, X rays and beta doses, a glow peak at 540 K which was isolated, a green luminescence band at 500 nm and non-sensitivity to UV exposure wavelengths above 230 nm.