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Experimental Determination of the Space Charge in AC Thin‐Film Electroluminescent Devices
Author(s) -
Soenen B.,
Neyts K.,
Stuyven G.,
Visschere P.
Publication year - 1998
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1833844
Subject(s) - electroluminescence , phosphor , electric field , space charge , materials science , optoelectronics , layer (electronics) , thin film , voltage , charge (physics) , electroluminescent display , field (mathematics) , electrical engineering , physics , nanotechnology , mathematics , quantum mechanics , engineering , pure mathematics , electron
We developed equations for the center of mass and the amount of space charge in the phosphor layer of AC thin‐film electroluminescent devices. The equations are function of the mean electric field in the phosphor layer and the electric field at both interfaces of the phosphor layer. We describe an electrical measurement method to determine these electric fields, assuming a constant space charge during steady state operation. Results are given for an undoped device based on ZnS.