Investigation on the effect of impurities in xenon based dielectric barrier discharge lamps

a N Dagang (1) , Sounil Bhosle (2, 1) , Georges Zissis (3) , A Corazza (4)

1 LAPLACE - LAboratoire PLasma et Conversion d'Energie
2 LED Engineering Development
3 LAPLACE-LM - Lumière et Matière
4 SAES Getters S.p.A

In any discharges, the existence of impurities could give a severe change or bring a negative or positive effect to the discharge and plasma characteristics. The authors purposely added a few kinds of impurities and their effect on the discharge was investigated. The common and typical impurities of H 2, N 2, CO 2 and CH 4 were applied in varying concentration percentages into a xenon DBD lamp. Their discharge condition, emission spectra and electrical characteristics were studied. The plasma generation differs from one type of impurity to another. With two different concentrations of hydrogen, at 5% concentration it would stabilize the discharge and at 0.5% concentrations it would give an additional collision process where a strong peak of atomic lines were observed. Nitrogen with two types of concentration i.e., 1% and 0.1% gives two kinds of characteristics in emission spectroscopy. From the electrical parameters, the voltage across the gap shows the lamps with impurities have a higher value compared to the pure xenon lamp.

Mots clés: Physical Sciences

Domaines: Plasmas; Optique / photonique; Matériaux

a N Dagang, Sounil Bhosle, Georges Zissis, A Corazza. Investigation on the effect of impurities in xenon based dielectric barrier discharge lamps. Journal of Physics D: Applied Physics, 2010, 43 (23), pp.234006. ⟨10.1088/0022-3727/43/23/234006⟩. ⟨hal-00569626⟩