Detail publikačního výsledku

Aging characteristics of green-emitting Zn2GeO4:Mn alternating-current thin-film electroluminescent displays

AHMED, M.

Originální název

Aging characteristics of green-emitting Zn2GeO4:Mn alternating-current thin-film electroluminescent displays

Anglický název

Aging characteristics of green-emitting Zn2GeO4:Mn alternating-current thin-film electroluminescent displays

Druh

Článek recenzovaný mimo WoS a Scopus

Originální abstrakt

Optical and aging characteristics of green-emitting Zn2GeO4:Mn alternating-current thin-film electro-luminescent (ACTFEL) displays are presented. Field-ionization of impact-excited Mn+2 luminescent impurities is found to give rise to positive space charge within the Zn2GeO4 phosphor, leading to unusual device behaviours such as conduction current delay, anomalous positive polarity transient luminance annihilation, transferred charge being comprised of mainly relaxation charge, and a decrease in the 50 Hz threshold voltage with increasing temperature. Low temperature aging experiments suggest that aging is at least partially due to hot electron-induced degradation. Although most Zn2GeO4:Mn ACTFEL devices exhibit a moderate amount of aging, certain devices are found to exhibit no measurable aging at 1 kHz when aged for 24 hours.

Anglický abstrakt

Optical and aging characteristics of green-emitting Zn2GeO4:Mn alternating-current thin-film electro-luminescent (ACTFEL) displays are presented. Field-ionization of impact-excited Mn+2 luminescent impurities is found to give rise to positive space charge within the Zn2GeO4 phosphor, leading to unusual device behaviours such as conduction current delay, anomalous positive polarity transient luminance annihilation, transferred charge being comprised of mainly relaxation charge, and a decrease in the 50 Hz threshold voltage with increasing temperature. Low temperature aging experiments suggest that aging is at least partially due to hot electron-induced degradation. Although most Zn2GeO4:Mn ACTFEL devices exhibit a moderate amount of aging, certain devices are found to exhibit no measurable aging at 1 kHz when aged for 24 hours.

Klíčová slova

ZnGeO4:Mn, electroluminescent device, aging

Klíčová slova v angličtině

ZnGeO4:Mn, electroluminescent device, aging

Autoři

AHMED, M.

Vydáno

10.06.2005

Nakladatel

VŠB-TU Ostrava

Místo

Ostrava

ISSN

1210-0471

Periodikum

Transaction of the VŠB-Technical university of Ostrava, Mechanical series

Svazek

51

Číslo

2

Stát

Česká republika

Strany od

1

Strany do

6

Strany počet

6

BibTex

@article{BUT46300,
  author="Mustafa M. Abdalla {Ahmed}",
  title="Aging characteristics of green-emitting Zn2GeO4:Mn alternating-current thin-film electroluminescent displays",
  journal="Transaction of the VŠB-Technical university of Ostrava, Mechanical series",
  year="2005",
  volume="51",
  number="2",
  pages="1--6",
  issn="1210-0471"
}