可撓式有機白光發光二極體之研製

The study of fabricating flexible white organic light emitting diodes

林銘彥(Ming-Yein Lin)

指導教授 ： 莊賦祥

共同指導教授 ： 蔡裕勝

國立虎尾科技大學/電機資訊學院/光電與材料科技研究所/碩士(2004年)

https://doi.org/10.6827/NFU.2004.00004

摘要

本研究在可撓式塑膠基板上研製有機白光發光二極體，研究中先利用
紅光摻雜染料 DCJT 摻雜在 Alq3 中來製作可撓式有機紅光發光二極體，其
元件結構為 ITO/TPD/Alq3:DCJT/Alq3/LiF/Al，並研究 DCJT 之摻雜濃度對
元件發光特性之影響，結果發現摻雜濃度越高，其發出之波長將會隨摻雜
濃度之增加而增長，但其發光亮度反隨之降低。本研究亦研製可撓式有機
藍光發光二極體，其結構為 ITO/TPD/ADS082/Alq3/LiF/Al。以此藍光有機
發光二極體作為基本結構，再利用先前紅光染料 DCJT 之摻雜技術，將 DCJT
紅光摻雜染料，分別摻雜在元件之電子傳輸層 (Alq3)、電洞傳輸 (TPD) 層與
藍光主發光層 (ADS082) 介面處或藍光主發光層中間處來製作不同元件結構
之有機白光發光二極體。當將 DCJT 摻雜在藍光主發光層中間處，可獲紅、
藍及綠三波長之白光元件，其發光特性極為穩定，CIE 色度值為 (0.33,0.33)，
極接近標準白光，且其 CIE 色度值不會隨偏壓大小改變而漂移，元件之最
大發光亮度可達 176 cd/m2@15V、最大發光率為 1.2 lm/w@14V，研究中
使用另一種電洞傳輸材料 (NPB)，來取代之先前研究所使用之電洞傳輸材料
(TPD)，結果發現使用 NPB 電洞傳輸材料之有機白光發光二極體，其白光
發光強度可有效的被提高 10 倍以上，使用 NPB 電洞傳輸層材料之有機白
光發光二極體，其白光色度座標為 (0.34,0.34)，元件之最大發光亮度可達
2000 cd/m2。

關鍵字

non

並列摘要

This report studied to fabricate white organic light emitting diodes on
flexible substrates. The first study was doping Red dopants DCJT in th host
emitter layer Alq3 to fabricated flexible red organic light emitting diodes, and
the doping characteristics of flexible organic light emitting diode were studied,
the device structure was ITO/TPD/DCJT:Alq3/LiF/Al. We observed that the
most heavily doped concentration could achieve the red shift of the device, but
the brightness of the device become weaker. In this repot, another study
fabricated blue organic light emitting diodes, the device structure was
ITO/TPD/ADS082/Alq3/LiF/Al. We used this blue organic light emitting diodes
as base structure, and the red dopants is doped in different organic layers of this
base structure, electron-transporting layer, the interface between
hole-transporting layer and blue host-emitting layer, and the middle of blue
host-emitting layer respectively. When the red dopants were doped in the middle
of blue host-emitting layer could achieve red light, blue light and green light
from this white device. It was also observed that the CIE (Commission
International de l`Eclairage) coordinates of this structure did not shift with a
different applied voltage and are almost located at (0.33,0.33). The maximum
luminance of this device was 176 cd/m2 at 15V, and maximum luminance
efficiency was 1.2 lm/w at 14V. We used another hole-transporting material
(NPB) to replace the original hole-transporting material (TPD). The result of the
study concluded that the brightness of NPB-use device was 10 times more than
that of TPD-use device. The white emission in CIE coordinates was (0.34,0.34),
and a maximum luminance of 2000 cd/m2 (at 10V) was obtained in NPB-use
device.

並列關鍵字

non

參考文獻

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