Solar-Blind Diamond Detectors for Lyra, the Solar VUV Radiometer on Board Proba II
- 70 Downloads
Fabrication, packaging and experimental results on the calibration of metal-semiconductor-metal (MSM) photodetectors made on diamond are reported. LYRA (Lyman-α RAdiometer onboard PROBA-2) will use diamond detectors for the first time in space for a solar physics instrument. A set of measurement campaigns was designed to obtain the XUV-to-VIS responsivity of the devices and other characterizations. The measurements of responsivity in EUV and VUV spectral ranges (40–240 nm) have been carried out by the Physkalisch-Technische Bundesanstalt (PTB) in Germany at the electron storage ring BESSY II. The longer wavelength range from 210 to 1127 nm was measured with monochromatic light by using a Xe-lamp at IMO-IMOMEC. The diamond detectors exhibit a photoresponse which lie in the 35–65 mA/W range at 200 nm (corresponding to an external quantum efficiency of 20–40%) and indicate a visible rejection ratio (200–500 nm) higher than four orders of magnitude.
Keywordsdiamond solar-blind photodetector UV detectors
Unable to display preview. Download preview PDF.
- Hochedez, J.-F. et al.: 2005, Adv. Space Res. Google Scholar
- Remes, Z. et al.: 2005, Diamond Relat. Mater. Google Scholar
- Rozanov, E. et al.: 2002, ‘Estimation of the ozone and temperature sensitivity to the variation of spectral solar flux.’ In: A. Wilson (ed.), SOHO 11 Symposium: From Solar Min to Max: Half a Solar Cycle with SOHO, ESA SP-508, ESA Publications Division, Noordwijk, The Netherlands, p. 181.Google Scholar