有機發光二極體的載子漂移率對溫昇的效應

The Mobility of the White Organic Light Emitting Diode Affected by Temperature Rising

林志龍(Chih-Long Lin)

指導教授 ： 楊恆隆

國立臺北科技大學/電資學院/光電工程系研究所/碩士(2011年)

https://doi.org/10.6841/NTUT.2011.00121

摘要

本論文研究改良的瞬態電致發光法(transient electroluminescence，TEL) 量測系統對白光有機發光二極體(white organic light emitting diode，WOLED)在溫度的改變下載子漂移率的變化。利用改良TEL法找到光偵測器測得的實驗原始數據後，用訊號的比較方式判讀出延遲時間點，求得每一溫度對應到的載子漂移率值。實驗的測量結果中，在常溫約22~25℃之間，其平均值約落在3.58x10-5(cm2/V•s)；接著將元件的溫度控制在30℃、35℃與40℃分別進行測量，量測的結果為溫度上升WOLED的載子漂移率的變化並不顯著，其平均值約為5.63x10-4 (cm2/V•s)；最後元件分別加熱至30℃、35℃與40℃並且分別持續40分鐘後測量發現，當WOLED的溫度上升時，載子漂移率從2.15x10-4至9.37x10-4(cm2/V•s)有明顯上升，其平均值約為5.50x10-4(cm2/V•s)。因此藉由結果得知隨著溫度的上升，WOLED的載子漂移率會因為溫度的影響而有上升的趨勢。

關鍵字

白光有機發光元件 ； 載子漂移率 ； 溫昇 ； 瞬態電致發光法

並列摘要

This thesis research is to experimentally investigate the minority carrier mobility of a white organic light-emitting diode (WOLED) under the influence of temperature rising by using modified transient electroluminescence (TEL) measurement. Our investigating results reveal that the mobility of a WOLED is 3.58x10-5(cm2/Vs) in average at room temperature and around 5.63x10-4 (cm2/Vs) in average as measured in 30, 35, and 40oC respectively. It is also indicated that the mobility data increases from 2.15x10-4 to 9.37x10-4 (cm2/Vs) as the measured WOLED is maintained in 30, 35, and 40oC for 40 minutes.

並列關鍵字

white emitting diode ； carrier mobility ； temperature rising ； transient electroluminescence

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