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Spectroscopic study of dielectric barrier discharges in cellular polypropylene ferroelectrets

  • The transient light emission from the dielectric barrier discharges (DBDs) in cellular polypropylene ferroelectrets subjected to high electric poling fields was spectroscopically measured. The spectrum shows strong emission from the second positive system of molecular nitrogen, N-2(C (3)Pi(u))-> N-2(B (3)Pi(g)), and the first negative system of N-2(+), N-2(+)(B (2)Sigma(+)(u))-> N-2(+)(X (2)Sigma(+)(g)), consistent with a DBD in air. When a dc voltage is applied stepwise to the ferroelectret film, light emission starts above a threshold, coinciding with the threshold voltage in obtaining piezoelectricity. From selected vibronic band strength ratios, the electric field in the discharge was determined and found to agree with Townsend breakdown.

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Author:Xunlin QiuORCiDGND, Axel Mellinger, Werner Wirges, Reimund Gerhard-MulthauptORCiDGND
Document Type:Article
Year of first Publication:2007
Year of Completion:2007
Release Date:2017/03/24
Source:Applied Physics Letters. - 91 (2007), 13, Art. 132905
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer Review:Referiert