Study of Nanostructured Polymeric Composites Used for Organic Light Emitting Diodes and Organic Solar Cells

Abstract EN

Polymeric nanocomposite films from PEDOT and MEH-PPV embedded with surface modified TiO2 nanoparticles for the hole transport layer and emission layer were prepared, respectively, for organic emitting diodes (OLEDs).

The composite of MEH-PPV+nc-TiO2 was used for organic solar cells (OSCs).

The characterization of these nanocomposites and devices showed that electrical (I-V characteristics) and spectroscopic (photoluminescent) properties of conjugate polymers were enhanced by the incorporation of nc-TiO2 in the polymers.

The organic light emitting diodes made from the nanocomposite films would exhibit a larger photonic efficiency and a longer lasting life.

For the organic solar cells made from MEH-PPV+nc-TiO2 composite, a fill factor reached a value of about 0.34.

Under illumination by light with a power density of 50 mW/cm2, the photoelectrical conversion efficiency was about 0.15% corresponding to an open circuit voltage Voc = 0.126 V and a shortcut circuit current density Jsc = 1.18 mA/cm2.