Effect of bulk space charge on the current and luminescence characteristics of ZnS:Mn ACTFEL display devices

Author

Singh, Vijay P. ; Majid, Wan Z. ; Morton, David C.

Author_Institution

Dept. of Electr. Eng., Texas Univ., El Paso, TX, USA

fYear

1991

fDate

15-17 Oct. 1991

Firstpage

130

Lastpage

133

Abstract

Analysis of ZnS:Mn ACTFEL (AC thin-film electroluminescent) devices with a deep level in the bulk of the phosphor layer was performed. Both donor-type and acceptor-type levels were considered. A trailing edge peak in luminescence waveform appears when the interface state level energy (E/sub CD/) is reduced to 0.5 eV. Under certain conditions, an acceptor-type bulk level can lead to oscillations in the device current. A reasonable match between theoretical and experimental luminescence waveforms could be obtained for E/sub CD/=0.88 eV. However, theory and experiment could not be matched simultaneously at three different drive conditions. Further refinement of the model is necessary for predicting the ACTFEL device response for all drive conditions.<>

Keywords

II-VI semiconductors; electroluminescent displays; manganese; thin film devices; zinc compounds; 0.5 eV; AC thin film electroluminescent devices; ACTFEL display devices; ZnS:Mn; bulk space charge; interface state level energy; luminescence characteristics; luminescence waveform; luminescence waveforms; model; trailing edge peak; Displays; Electron traps; Energy capture; Energy states; Interface states; Luminescence; Phosphors; Space charge; Thermal conductivity; Zinc compounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Display Research Conference, 1991., Conference Record of the 1991 International

Conference_Location

San Diego, CA, USA

Print_ISBN

0-7803-0213-3

Type

conf

DOI

10.1109/DISPL.1991.167450

Filename

167450