Park, J.H. Park, O.O. Kim, Jai Kyeong Yu, Jae Woong Kim, Y.C. 2024-01-21T03:00:23Z 2024-01-21T03:00:23Z 2021-09-02 2006-07 1567-1739 https://pubs.kist.re.kr/handle/201004/135355 White light emission was obtained from a light-emitting diodes (LEDs) prepared from an immiscible polymer blend consisting of poly(9,9′-dihexylfluorene-2,7-divinylene-m-phenylenevinylene-stat-p-phenylenevinylene) (PDHFPPV) and poly(2-methoxy-5-(2′-ethy-hexyloxy)-1,4-phenylenevinylene) (MEH-PPV). An inefficient energy transfer between PDHFPPV and MEH-PPV was observed because the blends are partially miscible. More importantly, because the order of bandgap energy is PVK > PDHFPPV > MEH-PPV we observed pure and strong white emission from this PLEDs, which results from the efficient F？rster-type energy transfer from PVK to PDHFPPV and the partial energy transfer from PDHFPPV to MEH-PPV. The ITO/(PVK/immiscible blend)/Li:Al devices showed more enhanced white-light output compared with that of the ITO/(immiscible blend)/Li:Al device. ？ 2005 Elsevier B.V. All rights reserved. English 한국물리학회 White light emission from a polymer bilayer by incomplete cascade energy transfer Article 10.1016/j.cap.2005.04.011 1 Current Applied Physics, v.6, no.4, pp.640 - 643 Current Applied Physics 6 4 640 643 N scopus kci other ART001019253 000238730700012 2-s2.0-33744770006 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article Band structure Electroluminescence Energy transfer Indium compounds Light emission Light emitting diodes Bandgap energy Partial energy transfer Polymer bilayers White emission Polymer blends Bilayer Electroluminescencce Light-emitting diodes (LEDs) White emission