High frequency excitation waveform for efficient operation of a xenon excimer dielectric barrier discharge lamp

Sz Beleznai, G. Mihajlik, I. Maros, L. Balzs, P. Richter

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17 Citations (Scopus)

Abstract

The application of a high frequency (∼2.5 MHz) burst (amplitude-modulated sinusoidal) excitation voltage waveform is investigated for driving a fluorescent dielectric barrier discharge (DBD) light source. The excitation waveform presents a novel method for generating spatially stable homogeneous Xe DBD possessing a high conversion efficiency from electrical energy to VUV Xe*2 excimer radiation (∼172 nm), even at a significantly higher electrical energy deposition than realized by pulsed excitation. Simulation and experimental results predict discharge efficiencies around 60%. Lamp efficacy above 74 lm W-1 has been achieved. VUV emission and loss mechanisms are investigated extensively and the performance of burst and pulsed waveforms is compared both theoretically and experimentally.

Original languageEnglish
Article number015203
JournalJournal of Physics D: Applied Physics
Volume43
Issue number1
DOIs
Publication statusPublished - Jan 1 2010

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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