奈米銀線薄膜應用於OLED陽極 之光電特性研究

The Study on the Electro-Optical Properties of Silver Nanowire thin films for OLED anode

王致堯(Jhih-Yao Wang)

指導教授 ： 鄭慧愷

中原大學/電機資訊學院/電子工程研究所/碩士(2015年)

https://doi.org/10.6840/cycu201500856

摘要

有機發光二極體（Organic Light-Emitting Diode, OLED）照明，因演色性佳且屬於自發光光源，逐漸演變成各國發展固態照明之主流，而扮演OLED元件中之電極材料，除了要求良好的導電性外，在可見光波長範圍內之穿透率也相當重視，因此透明導電薄膜(Transparent conducting film, TCF)，在此扮演了不可或缺的角色。現今常見材料為ITO，但是含有銦稀有金屬礦，因此本論文主要研究高導電度與高穿透度的奈米銀線導電薄膜，希望取代ITO應用於OLED元件的陽極。
奈米銀線(Silver nanowire, AgNWs)薄膜因金屬特性，具有低電阻率(15Ω/□)、高穿透率(80%)以及可撓性質等優點，是現今正在發展的透明薄膜之一。因此本論文是利用旋轉塗佈方式，在室溫下製備AgNWs薄膜，最後製作成OLED元件時，發光輝度可達2000 cd/cm2 (at 8V)，元件效率則可達36 lm/watt (at 8V)，接著利用表面電性處理改善奈米銀線薄膜來製作OLED元件，在發光輝度與元件效率的表現皆可以提高30 %。

關鍵字

透明導電薄膜 ； 奈米銀線 ； 表面電性處理 ； 旋轉塗佈 ； 有機發光二極體

並列摘要

Organic light-emitting diode (OLED) lighting, because of good CRI and self-luminous light source and gradually evolved into the mainstream of national development solid-state lighting. The electrode material OLED element, the addition to the requirements of good electrical conductor’s nature, the transmittance in the visible wavelength range is quite seriously, so the transparent conducting film (TCF), this plays an important role. Currently, Indium tin oxide (ITO) is the most commonly used material, but indium is the rare metal. Therefore, ours study aims at researching transparent conductive oxide films with higher transmittance and higher conductivity, and expects to substitute AgNW for ITO to apply on OLED anode.
Silver nanowire (AgNWs) thin film because of the metal with low resistivity (15Ω/□), high transmittance (80%) and flexible nature, etc. It is one of the transparent films now being developed. Therefore, this study is the use of spin-coating prepared AgNWs film at room temperature. Finally, the OLED device was fabricated with the silver nanowire thin film as the anode. The OLED exhibits the luminous power efficiency 36 lm/watt at a luminance of 2000 cd/cm2 with driving voltage of 8V. Then we use of AgNW film after surface electrically treated on OLED device. The luminous power efficiency and luminance can up to 30%.

並列關鍵字

Transparent conducting film (TCF) ； Silver nanowire (AgNWs) ； Surface electrically treated ； Spin coating ； Organic Light-Emitting Diode (OLED)

參考文獻

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[23] 賴炤銘，李錫隆，”奈米材料的特殊效應與應用”，Chemistry, Vol. 61, No. 4, pp. 585-597, December 2003.

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