Luminescence properties of composites made of a europium(III) complex and electroluminescent polymers with different energy gaps

abstract

We present the optoelectronic properties of composites made of a europium(III) complex, Eu(NTA)(3)phen (where NTA=1-(2-naphthoyl)-3,3,3-trifluoroacetonate; phen=1,10-phenantroline), dispersed in three electroluminescent polymers, namely, poly(N-vinylcarbazole), poly(9,9-dioctylfluorene) and poly(9,9-dioctylfluorene-alt-benzothiadiazole). We find that the photo- and electroluminescence (EL) properties of these composites are well rationalized in terms of the relative position of the frontier levels of the host polymers and of the europium complex. We find also that charge recombination at the europium complex sites plays a key role on the EL properties of the composites.

keywords

LIGHT-EMITTING-DIODES; CONJUGATED POLYMERS; EFFICIENCY; EMISSION; DEVICES

subject category

Physics

authors

Morgado, J; Charas, A; Fernandes, JA; Goncalves, IS; Carlos, LD; Alcacer, L

our authors

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".