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Solar-Blind Diamond Detectors for Lyra, the Solar VUV Radiometer on Board Proba II


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.

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  1. BenMoussa, A. et al.: 2004, Phys. Status Solidi (a) 201(N11), 2536–2541.

    ADS  Article  Google Scholar 

  2. Hochedez, J. -F. et al.: 2001, Diamond Relat. Mater. 10(3–7), 673–680.

    ADS  Article  Google Scholar 

  3. Hochedez, J.-F. et al.: 2005, Adv. Space Res.

  4. Remes, Z. et al.: 2005, Diamond Relat. Mater.

  5. Richter, M. et al.: 2003, Metrologia 40, 107–110.

    ADS  Article  Google Scholar 

  6. 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.

  7. Saito, T.: 2003, Metrologia 40, 159–162.

    ADS  Article  Google Scholar 

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Correspondence to A. Benmoussa.

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Benmoussa, A., Hochedez, JF., Schmutz, W.K. et al. Solar-Blind Diamond Detectors for Lyra, the Solar VUV Radiometer on Board Proba II. Exp Astron 16, 141–148 (2003).

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  • diamond
  • solar-blind photodetector
  • UV detectors