磷光高分子發光二極體與其三重態的能量轉移

Phosphorescent Polymer light-emitting Diodes and Triplet Energy Transfer

陳方中(Fang-Chung Chen)

《光學工程》 94期 (2006/06) Pp. 26-32

https://doi.org/10.30011/OE.200606.0004

摘要

磷光有機發光二極體中，由於可同時利用單重態與三重態激子，電激發所產生元件的理論最高內部量子效率可高達100%。而高分子磷光發光元件中主體材料的低能量三重態能階會使磷光欃雜物的三重態被消滅，從Stern-Volmer的消滅實驗中可得到此反應的證據，從本文的探討，可以了解挶限(confine)三重態激子於磷光分子上是製作高效率高分子磷光發光元件其中一個很重要的因素。

關鍵字

高分子發光二極體 ； 磷光 ； 三重態 ； 能量轉移

並列摘要

Due to the harvesting of both singlet and triplet excitons, the theoretical internal quantum efficiency of phosphorescent organic light-emitting devices (OLEDs) can be as high as 100%. For phosphorescent polymer light-emitting diodes (PLEDs), the quenching of dopant phosphorescence because of the low energy triplet states of the host polymer has been observed. From the Stern-Volmer quenching experiment, the quenching of the triplet emission by the host materials is demonstrated. From these studies, it is inferred that the triplet confinement at the dopant triplet levels is one of the important factor to achieve a high efficiency.

並列關鍵字

polymer light-emitting diodes ； phosphorescent ； triplet ； energy transfer