Print Email Facebook Twitter Single Photon Counting UV Solar-Blind Detectors Using Silicon and III-Nitride Materials Title Single Photon Counting UV Solar-Blind Detectors Using Silicon and III-Nitride Materials Author Nikzad, Shouleh (California Institute of Technology) Hoenk, Michael (California Institute of Technology) Jewell, April D. (California Institute of Technology) Hennessy, John J. (California Institute of Technology) Carver, Alexander G. (California Institute of Technology) Jones, Todd J, (California Institute of Technology) Goodsall, Timothy M. (California Institute of Technology) Hamden, Erika T. (California Institute of Technology) Bulmer, J. (SUNY Polytechnic Institute) Charbon-Iwasaki-Charbon, E. (TU Delft (OLD)Applied Quantum Architectures) Padmanabhan, Preethi (Student TU Delft) Hancock, Bruce (California Institute of Technology) Bell, L. Douglas (California Institute of Technology) Date 2016 Abstract Ultraviolet (UV) studies in astronomy, cosmology, planetary studies, biological and medical applications often require precision detection of faint objects and in many cases require photon-counting detection. We present an overview of two approaches for achieving photon counting in the UV. The first approach involves UV enhancement of photon-counting silicon detectors, including electron multiplying charge-coupled devices and avalanche photodiodes. The approach used here employs molecular beam epitaxy for delta doping and superlattice doping for surface passivation and high UV quantum efficiency. Additional UV enhancements include antireflection (AR) and solar-blind UV bandpass coatings prepared by atomic layer deposition. Quantum efficiency (QE) measurements show QE > 50% in the 100-300 nm range for detectors with simple AR coatings, and QE ≌ 80% at ~206 nm has been shown when more complex AR coatings are used. The second approach is based on avalanche photodiodes in III-nitride materials with high QE and intrinsic solar blindness. Subject ALDAPDAvalancheEMCCDGaNMBEMOCVDQuantum efficiencyROICUltravioletVisible rejection To reference this document use: http://resolver.tudelft.nl/uuid:7385a755-b70d-47c7-a86b-58802a910950 DOI https://doi.org/10.3390/s16060927 ISSN 1424-8220 Source Sensors, 16 (6), 1-21 Part of collection Institutional Repository Document type review Rights © 2016 Shouleh Nikzad, Michael Hoenk, April D. Jewell, John J. Hennessy, Alexander G. Carver, Todd J, Jones, Timothy M. Goodsall, Erika T. Hamden, J. Bulmer, E. Charbon-Iwasaki-Charbon, Preethi Padmanabhan, Bruce Hancock, L. Douglas Bell Files PDF 44971381_sensors_16_00927.pdf 7.07 MB Close viewer /islandora/object/uuid:7385a755-b70d-47c7-a86b-58802a910950/datastream/OBJ/view