Electroluminescence thermal quenching in SrS:Cu thin-film electroluminescent devices

Electroluminesence (EL) thermal quenching refers a reduction in luminance, concomitant with a reduction in transferred charge, when an alternating-current thin-film electroluminescent (ACTFEL) device is operated at an elevated temperature. EL thermal quenching is found to be significant in SrS:Cu AC...

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Bibliographic Details
Published in:Applied physics letters 2000-01, Vol.76 (2), p.185-187
Main Authors: Baukol, B. A., Hitt, J. C., Keir, P. D., Wager, J. F.
Format: Article
Language:English
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Summary:Electroluminesence (EL) thermal quenching refers a reduction in luminance, concomitant with a reduction in transferred charge, when an alternating-current thin-film electroluminescent (ACTFEL) device is operated at an elevated temperature. EL thermal quenching is found to be significant in SrS:Cu ACTFEL devices operated above ∼60-80 °C. Maximum transferred charge-maximum applied voltage (Qmax-Vmax) and transferred charge capacitance (i.e., dQmax/dVmax vs Vmax) measurements as a function of temperature in conjunction with ACTFEL device simulation are employed in order to establish that EL thermal quenching arises from a thermally activated annihilation of positive space charge and a corresponding increase in the threshold voltage.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.125697