Detail publikace

Influence of charged centers on transport properties of thin film electroluminescent devices

AHMED, M. TOMÁNEK, P.

Originální název

Influence of charged centers on transport properties of thin film electroluminescent devices

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Thin film electroluminescent devices (TFELD) have become of great interest since they offer a possible means of achieving a high-resolution, light-weight, compact video display panel for computer terminals or television screens [1].The realization of a full colour TFELD represented a problem due to the poor luminance of blue emission. To overcome this problem, the mechanism of electroluminescence (EL) should be investigated in detail to find out the way to improve the device properties. The basic mechanism of electroluminescence is based on high-field acceleration of electrons to optical energies at which luminescent centers, intentionally introduced into the host material, could be impact excited. So, the transport process of electrons under an electric field is the key process since it determines the electrons energy. This process is the result of interaction between the acceleration of electrons by the electric field and the scattering of electrons by some kinds of scattering mechanism, including phonon scattering, impurity scattering, etc. Charged centers exist in the phosphor layer of common thin film electroluminescent devices. In this article, the electron scattering process by these centers is studied through phase shift analysis. The scattering rates in different cases are obtained and compared with other important scattering processes. The electron transport process is simulated by means of the Monte Carlo method. Quantitative results about the influence of charged centers on electron kinetic energy are reported.

Klíčová slova

thin-film electroluminescent device, phosphors, charged center, transport properties, near-field investigations

Autoři

AHMED, M.; TOMÁNEK, P.

Rok RIV

2005

Vydáno

8. 6. 2005

Nakladatel

Zeithamlová Milena, Ing. - Agentura Action M

Místo

Prague

ISBN

80-86742-08-3

Kniha

Photonics Prague 2005

Strany od

145

Strany do

146

Strany počet

2

BibTex

@inproceedings{BUT14801,
  author="Mustafa M. Abdalla {Ahmed} and Pavel {Tománek}",
  title="Influence of charged centers on transport properties of thin film electroluminescent devices",
  booktitle="Photonics Prague 2005",
  year="2005",
  pages="145--146",
  publisher="Zeithamlová Milena, Ing. - Agentura Action M",
  address="Prague",
  isbn="80-86742-08-3"
}