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Experimental investigation of currents and efficiencies in SrS:Ce thin‐film electroluminescent devices
Author(s) -
Neyts Kristiaan,
Corlatan Dorina,
Visschere Patrick,
Lahonen Marja,
Viljanen Juha
Publication year - 1997
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1985143
Subject(s) - electroluminescence , phosphor , materials science , optoelectronics , luminance , electric field , electroluminescent display , current (fluid) , thin film , space charge , voltage , layer (electronics) , optics , electrical engineering , composite material , nanotechnology , physics , quantum mechanics , engineering , electron
— In thin‐film electroluminescent displays the electrical properties of the phosphor material are very important for the device performance. The electric field and the current in the phosphor layer may be quite inhomogeneous due to multiplication and space charge, even in devices without filamentary behavior. Measuring the ratio of luminance to current provides information about the mechanism of the light‐generation process. The currents and the efficiencies for SrS:Ce devices with different thicknesses and different bottom layers are discussed and compared with numerical simulations.