Abstract
We have demonstrated a vertically stacked device consisting of organic photovoltaic device
(OPV) and organic light-emitting diode (OLED) inside a polymer dispersed liquid crystal (PDLC)
cell. In such a device, OLED and PDLC acted as transmissive- (T-) and reflective- (R-) mode,
respectively, of a transflective display without the tradeoff of aperture ratio between R- and
T-modes in a conventional transflective LC display. OPV functioned as the black background for
PDLC operation and increased the contrast ratio of OLED. Electrical characteristics of OLED and
OPV in the stacked device were nearly identical to their individual device, which showed the
fabrication process had little effect on OLED and OPV performances. However, their optical
properties showed a little degradation, coming from the multi-layer structure and hence the
suitable optical cavity design was needed. Storage lifetime of OLED increased in the stacked
device because LC material helped to prevent the water and oxygen attack. Driving voltage of PDLC
increased due to the insertion of passivation layer upon the electrode which was used protect the
OLED and OPV underneath.
© 2013 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Add to BibSonomy