Optimized spectral collection efficiency obtained in diamond-based ultraviolet detectors using a three-electrode structure

Spaziani, F.; Rossi, M. C.; Salvatori, S.; Conte, G.; Ascarelli, P.
May 2003
Applied Physics Letters;5/26/2003, Vol. 82 Issue 21, p3785
Academic Journal
A diamond detector structure for uniform and efficient collection of photogenerated carriers in the ultraviolet spectral range is presented. The device operating principle is based on the contemporary collection of both photogenerated carriers in the bulk, and photoelectrons emitted from the diamond surface. A three-electrode device structure is used, having dual side contacts on the diamond surfaces, and a separated third electrode in the vacuum. A large improvement of the detector responsivity, as well as a compensation of the efficiency losses usually occurring for highly absorbed radiation is achieved, while keeping comparable wavelength selectivity.


Related Articles

  • Solid-phase ultraviolet sensing system for determination of methylxanthines. Lloren-Martínez, E. J.; García-Reyes, J. F.; Ortega-Barrales, P.; Molina-Díaz, A. // Analytical & Bioanalytical Chemistry;May2005, Vol. 382 Issue 1, p158 

    In this study the use of a single continuous-flow solid-phase UV spectrophotometric sensing system for determination of methylxanthines was evaluated. Two methods were developed to determine caffeine (CF) and theophylline (TP) in pharmaceuticals and CF and theobromine (TB) in food and beverages....

  • A superlens for the deep ultraviolet. Schilling, Alina; Schilling, Joerg; Reinhardt, Carsten; Chichkov, Boris // Applied Physics Letters;9/21/2009, Vol. 95 Issue 12, p121909 

    A superlens based on a single aluminum layer operating at deep ultraviolet (UV) wavelengths is investigated both, theoretically and experimentally. Using a wavelength of 157 nm double slits with a center-to-center separation of only 70 nm were experimentally resolved and simulations indicate a...

  • UV-imager design takes great care. Gilblom, David // Laser Focus World;Apr2005, Vol. 41 Issue 4, p79 

    Discusses the considerations in designing an imaging apparatus in the ultraviolet spectrum. Different bands in the ultraviolet spectrum; Use of silicon as an ultraviolet detector; Various ultraviolet optical materials; Claim that reflective optics are useful in the ultraviolet.

  • Solid-state UV laser.  // Laser Focus World;Apr2006, Vol. 42 Issue 4, p106 

    The article reviews the Explorer DPSS OEM laser, a low-power Q-switched, ultraviolet laser system from Spectra-Physics Inc.

  • Using ultraviolet sensors in embedded designs. IBRAHIM, DOGAN // Electronics World;Nov2016, Vol. 122 Issue 1967, p14 

    The article offers information on the usage of ultraviolet (UV) sensors in embedded designs. Topics discussed include UV sensors designed to detect wavelengths in the UV spectrum range with working principle being hitting of photons like GUVA-S12SD which is a UVA/UVB sensor from sensors maker...

  • Conceptual development and characterization of a diamond-based ultraviolet detector Wei Jiang; Jiang, Wei; Jaeshine Ahn; Ahn, Jaeshine; Chan Yuen Chuen; Chuen, Chan Yuen; Lam Yee Loy; Loy, Lam Yee // Review of Scientific Instruments;Feb1999, Vol. 70 Issue 2, p1333 

    Describes the design and fabrication of a metal-semiconductor-metal structure ultraviolet photodetector on chemical vapor deposition grown diamond. Principle of the design concept; Operation of the detector at a lower bias voltage with a higher photoresponsivity in the ultraviolet range;...

  • Submicron metal-semiconductor-metal diamond photodiodes toward improving the responsivity. Liao, Meiyong; Alvarez, Jose; Imura, Masataka; Koide, Yasuo // Applied Physics Letters;10/15/2007, Vol. 91 Issue 16, p163510 

    Metal-semiconductor-metal deep-ultraviolet detectors with electrode spacings from 0.14 to 10 μm have been fabricated on a homoepitaxial diamond thin film grown on a Ib-type diamond substrate. A dramatic increase of the deep ultraviolet responsivity is observed when the electrode spacing is...

  • Polycrystalline diamond photoconductive device with high UV-visible discrimination. McKeag, Robert D.; Chan, Simon S.M. // Applied Physics Letters;10/9/1995, Vol. 67 Issue 15, p2117 

    Examines the fabrication of photoconductive devices with high ultraviolet (UV) visible discrimination from free standing polycrystalline thin film diamond. Details on UV photodetecting devices with interdigitated electrode design; Information on identical features observed between natural...

  • Fabrication of three dimensional diamond ultraviolet photodetector through down-top method. Zhangcheng Liu; Jin-Ping Ao; Fengnan Li; Wei Wang; Jingjing Wang; Jingwen Zhang; Hong-Xing Wang // Applied Physics Letters;10/10/2016, Vol. 109 Issue 15, p153507-1 

    Three dimensional diamond ultraviolet (UV) photodetector have been fabricated on diamond epitaxial layer through down-top approach, where diamond epitaxial layer was grown between metal electrodes. A thin diamond epitaxial layer was first grown on high-pressure high-temperature single crystal...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics