ROLE OF DIPOLES IN THE EL MECHANISMS OF ACTFEL DEVICES: Characterization and modeling of the opto-electronic processes in A. C. Thin Film Electroluminescent display devices - Couverture souple

Sivakumar, Praveen Kumar

 
9783639203356: ROLE OF DIPOLES IN THE EL MECHANISMS OF ACTFEL DEVICES: Characterization and modeling of the opto-electronic processes in A. C. Thin Film Electroluminescent display devices
Couverture souple
ISBN 10 : 3639203356 ISBN 13 : 9783639203356
Editeur : VDM Verlag, 2009

Synopsis

The purpose of this book is to advance the understanding of SrS-based a. c. thin film electroluminescent (ACTFEL) devices. The role of traps in the bulk phosphor layer in the light emission mechanism from ACTFEL devices is studied, characterized and modeled. Experiments were performed to observe the response of the ACTFEL devices to tailored voltage excitations. A physical model was developed to describe the opto- electronic processes taking place in the phosphor; analytical equations were written and numerically simulated to plot the flux and luminance responses of the device to similarly tailored voltage excitations. The voltage excitation parameters such as amplitude, rise times and fall times were varied both experimentally and in simulations and their effect on the opto-electronic response of the device was studied. Thermally stimulated luminance studies were performed to determine critical device parameters. Theoretical predictions matched the experimental data in a qualitative manner. A much improved quantitative accuracy is obtained when the role of dipoles in the EL mechanisms is incorporated into the model.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

The purpose of this book is to advance the understanding of SrS-based a. c. thin film electroluminescent (ACTFEL) devices. The role of traps in the bulk phosphor layer in the light emission mechanism from ACTFEL devices is studied, characterized and modeled. Experiments were performed to observe the response of the ACTFEL devices to tailored voltage excitations. A physical model was developed to describe the opto- electronic processes taking place in the phosphor; analytical equations were written and numerically simulated to plot the flux and luminance responses of the device to similarly tailored voltage excitations. The voltage excitation parameters such as amplitude, rise times and fall times were varied both experimentally and in simulations and their effect on the opto-electronic response of the device was studied. Thermally stimulated luminance studies were performed to determine critical device parameters. Theoretical predictions matched the experimental data in a qualitative manner. A much improved quantitative accuracy is obtained when the role of dipoles in the EL mechanisms is incorporated into the model.

Biographie de l'auteur

Praveen Kumar Sivakumar is a Test Engineer at Creation Technologies and pursues research with his advisor and colleagues from Electronic Devices Research Laboratory. He received his BSEE degree from the University of Madras in 2000, MSEE degree from the University of Kentucky in 2003 and PhD from the University of Kentucky in 2008.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
VDM Verlag
Date d'édition
2009
Langue
anglais
ISBN 10 
3639203356
ISBN 13 
9783639203356
Reliure
Broché
Nombre de pages
148
Coordonnées du fabricant
non disponible
Personne responsable
non disponible