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SU-HUA YANG1,* , CHIEN-FA LEE1
The white color polymer was prepared by the binary blending technique and the polymer light emitting diode (PLED) with single emission layer was achieved by spin-coating method. By means of Förster energy transfer mechanism, the excitation energy was partially transferred from the blue poly(9-vinylcarbazole) (PVK) to the red poly[2-methoxy-5-{2-etylhexyloxy}1,4-phenylenevinylene-co-(4,4’-biphenylene)] (MEH-BP-PPV), which resulted from poorly miscible effect and partially spectral overlap of polymers. A broad band white light emission with two emission peaks at 400 and 560 nm was obtained. The optimal composition weight ratio of PVK to MEH-BP-PPV for achieving the white line emission was 100 to 5. The CIE coordinates of the emission light were at x = 0.29, y = 0.33 when the PVK:MEH-BP-PPV blend was irradiated by an UV lamp. The turn-on voltage for the white light PVK:MEH-BP-PPV PLED was about 3.5 V, although the luminance was low and needed to be improved.
Polymers, Luminescence, Absorption, Photoluminescence.
SU-HUA YANG, CHIEN-FA LEE, Luminescence mechanism and property of white light PVK:MEH-BP-PPV polymer LED prepared by blending, Optoelectronics and Advanced Materials - Rapid Communications, 1, 4, April 2007, pp.162-165 (2007).
Submitted at: Feb. 27, 2007
Accepted at: March 14, 2007
Optoelectronics and Advanced Materials - Rapid Communications
(2024): Impact Factor = 0.4 - Journal Citation Reports (Clarivate Analytics, 2025)
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