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High Efficacy Phosphorescent SOLED
Lighting--Universal
Display Corporation, 375 Phillips
Boulevard, Ewing, NJ 08618‑1428; 609‑671‑0980;
www.universaldisplay.com
Dr. Brian D'Andrade, Principal
Investigator, bdandrade@universaldisplaly.com
Mrs. Janice Mahon, Business Official, jkmahon@universaldisplay.com
DOE Grant No. DE‑FG02‑07ER84809
Amount:
$749,981
In 2001, lighting was estimated to consume 8.2 quads
(approximately 762 TWh), or about 22% of the total
electricity generated in the U.S. New, high-efficiency, solid-state light
sources, such as organic light emitting diodes (OLEDs),
are needed to help reduce the ever increasing demand for energy. Potentially, an OLED is an inexpensive and
energy saving diffuse source that may compete with conventional incandescent
and fluorescent light sources. However,
improvements in the overall efficiency and lifetime of these devices are
required before they become commercially viable products. This project will enable the demonstration of
an efficient, novel OLED illumination system with 150 lm/W power efficacy. Phase I demonstrated a warm, white, stacked
OLED (SOLED) with an efficacy of 50 lm/W at a forward luminance of 1,000 cd/m2.
The device had a Color Rendering Index (CRI) of 72 and a lifetime of
over 80,000 hrs from an initial luminance of 1,000 cd/m2. Phase II will involve the design and
fabrication of warm white SOLED prototypes that have a light output similar to
conventional fluorescent lighting fixtures
Commercial Applications and
Other Benefits as described by the awardee:
Today,
OLED technology is the leading emerging technology for flat panel displays (FPDs), with recent product introductions in cell phones and
TV’s. Many of the features that are
desirable for FPDs are also making OLED technology of
great interest to the solid-state lighting community. OLEDs are bright
and thin, with desirable CRIs and excellent power
efficiency at low voltages. Therefore, OLEDs are expected to provide significant energy savings
for general illumination purposes.