Nitrogen-doped diamond: Thermoluminescence and dosimetric applications

Thermoluminescence properties of undoped and nitrogen-doped CVD diamond exposed to gamma radiation

“…In fact, a TL quenching effect in microwave assisted plasma CVD as the nitrogen concentration increases up to 26 ppm was reported (Benabdesselam et al, 2001). More recently Descamps et al (2006) demonstrated a shift of the main TL peak dependence with nitrogen concentration and a highest TL response for 20 ppm of nitrogen. Although, the effect on the TL properties by incorporating nitrogen to the precursor gas is unquestionable, the previous results differ from the ones we have described for the STDIA 084 (nitrogen-doped) and MSDIA 200 (undoped) diamonds.…”

“…Optimization of the TL properties depends on the type and content of doping incorporated into the CVD precursor gas during growth of the diamond films. Impurity doping of CVD diamond has been the subject of intensive research, where nitrogen has drawn particular attention, mainly due to the effects of low concentrations on improving the TL sensitivity and dose linearity (Benabdesselam et al, 2001;Descamps et al, 2006). The TL enhancing efficiency through doping incorporation is far of being an obvious problem, since the TL of undoped CVD diamond films are strongly dependent on the precursor gas components and concentrations, substrate temperature, and other instrumental parameter during film deposition.…”

Thermoluminescence properties of undoped diamond films deposited using HF CVD technique

“…Up to now, studies on CVD diamond as TLD material have tended to focus on TL response as a function of doping [7,16]. The comparison between undoped and N-doped CVD diamond do not show any clear trends in TL yield.…”

“…Due to the excellent properties, especially large energy gap, diamond is a very good material for different applications [3,4]. It can be considered as an excellent material for detection of any kind of radiation [5] and especially can be applied in thermoluminescence (TL) dosimetry [6,7].…”

“…The diamond doping with boron or nitrogen is currently a subject of intensive research. The investigation is focused on improving the efficiency of TL sensitivity and TL signal-to-dose linearity [6,7,16]. It is well known that the TL signal of undoped CVD diamond films strongly depends on the CVD diamond growth process i.e.…”