Very high UV-visible selectivity in polycrystalline CVD diamond films
| العنوان: | Very high UV-visible selectivity in polycrystalline CVD diamond films |
|---|---|
| المؤلفون: | Dominique Tromson, Jean-Paul Kleider, E. Rzepka, José Alvarez, E. Snidero, A. Godard, Philippe Bergonzo, Christine Mer, H. Cheverry |
| المساهمون: | Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Diamond and Related Materials Diamond and Related Materials, Elsevier, 2004, 13, pp.881-885 HAL Diamond and Related Materials, 2004, 13, pp.881-885 |
| بيانات النشر: | Elsevier BV, 2004. |
| سنة النشر: | 2004 |
| مصطلحات موضوعية: | Electron mobility, Analytical chemistry, Photodetector, 02 engineering and technology, Chemical vapor deposition, engineering.material, 01 natural sciences, symbols.namesake, Quality (physics), 0103 physical sciences, Materials Chemistry, Electrical and Electronic Engineering, ComputingMilieux_MISCELLANEOUS, 010302 applied physics, Chemistry, Mechanical Engineering, Diamond, General Chemistry, 021001 nanoscience & nanotechnology, Electronic, Optical and Magnetic Materials, Full width at half maximum, engineering, symbols, Crystallite, 0210 nano-technology, Raman spectroscopy |
| الوصف: | Polycrystalline CVD diamond is a very attractive material for the fabrication of UV detectors. However, good quality material is required to obtain a high UV photoresponse together with a low visible sensitivity. In this work, we present and correlate the results of Raman spectroscopy, spectral photoresponse and thermally stimulated current (TSC) achieved on polycrystalline CVD diamond films. All the layers show the typical Raman diamond line with very small FWHM values, a broad TSC peak in the 480–530 K range, and have a high UV-visible selectivity (defined here as the ratio of the photosensitivity at 200 and 657 nm). This selectivity is found to increase when the FWHM of the Raman line decreases. In the same time, the mobility-lifetime product increases, and we observe both a shift in the TSC peak from 530 to 480 K and a decrease in the integrated trapped charge. For the best sample, the FWHM of the Raman line is 1.88 cm−1, and the values of the mobility-lifetime product and of the UV-visible selectivity are as high as 1.5×104 cm2 V−1, and 2×107, respectively, while the trap density estimated from the TSC experiment is in the range of 1017 cm−3. |
| تدمد: | 0925-9635 |
| DOI: | 10.1016/j.diamond.2003.12.007 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c64035ad41137f06d92050878a8b0a8 https://doi.org/10.1016/j.diamond.2003.12.007 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....5c64035ad41137f06d92050878a8b0a8 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 09259635 |
|---|---|
| DOI: | 10.1016/j.diamond.2003.12.007 |