Abstracts Book - IMRC 2018

• SC4-P108
CINNAMIC ESTER DERIVATIVES FOR OLED APPLICATION
Miguel Ángel Aztatzi Mendoza 1 , Eugenio Hernández Fernández 1 , Luis Abraham Lozano
Hernández 2 , Jose-Luis Maldonado 2 , Israel López 1
1 Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Mexico. 2 Centro de
Investigaciones en Optica, Grupo de Propiedades Ópticas de los Materiales, Mexico.
The design of new organic materials for optoelectronics, specifically for OLEDs,
requires the consideration of diverse properties, such as proper HOMO and
LUMO energy levels, high luminescence efficiency, balanced charge-carrier
mobility, good stability, and appropriate morphology. The molecular structure
of organic compounds has a significant impact on their properties, which for
OLEDs, must remain unchanged (or improved) when used as a thin solid film
due to the crucial role of the solid-phase morphology in the performance of
devices based on those materials.
In this work, OLEDs were fabricated using a pre-cleaned ITO glass as the main
substrate and a series of spin-coated organic layers. The used materials were:
poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as
electron blocking layer, the polymer poly[(9,9-bis(3-(N,Ndimethylamino)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctyl
fluorene)] (PFN) as hole
blocking layer, and finally, Field’s Metal (FM) as cathode, which is composed of
Bi/In/Sn, it is an eutectic alloys that melt at 62 and is vacuum-free deposited by
coating under normal atmosphere conditions. The compounds ethyl (E)-3-(4-
diethylamino)phenyl)acrilate (3a) and ethyl (E)-3-(4-
diphenylamino)phenyl)acrilate (3b) were used as emitting material in the OLED
configuration ITO/PEDOT:PSS/3a or 3b/PFN/FM. Devices showed a turn-on
voltage of 8 and 5 V, for 3a and 3b emitting material, respectively.
Keywords: OLEDs, Cinnamic ester derivatives, Photovoltaics
Presenting authors email: miguelaztatzi02@gmail.com