奈米銀線薄膜之光電性質及OLED元件應用研究

The Study on the Electro-Optical Properties and OLED Applications of Silver Nanowire Thin Films

徐瑋雁(Wei-Yen Hsu)

指導教授 ： 鄭慧愷

中原大學/工學院/電子工程研究所/碩士(2014年)

https://doi.org/10.6840/cycu201400449

摘要

有機發光二極體（OLED）元件為一面光源，其擁有透明、發光均勻、可撓性及輕薄等優點，有機會成為照明產業的明日之星。現今OLED陽極的導電薄膜主要材料為ITO，但ITO薄膜並不適合製作可撓式OLED元件，且銦金屬又是稀有礦產。因此各界都在追求能夠取代ITO薄膜的透明導電材料。奈米銀線( silver nanowire )薄膜因製備成本低廉，薄膜的穿透度高、導電度佳，有潛力機會應用於可撓式( PET )OLED元件基板上，本論文希望研究製備導電度低於15 Ω/□與穿透度大於80 %的奈米銀線薄膜，並將其應用於可撓式OLED元件之陽極上，並作一系列探討。
我們已經成功地在玻璃基板上製作出高品質的奈米銀線薄膜，薄膜在可見光譜之穿透率可超過85.2 %，片電阻為6.3 Ω/□。在相同片電阻值下，奈米銀線薄膜較ITO薄膜擁有更好的薄膜穿透度。此外，我們也將其應用在可撓式OLED元件陽極的基板上，成功地製作出高品質的奈米銀線薄膜，獲得OLED元件亮度可達30000 cd/m2( 14 V)，元件效率可達30 cd/A ( 28 lm/W)。

關鍵字

有機發光二極體 ； 旋轉塗佈 ； 真空蒸鍍 ； 奈米銀線

並列摘要

Organic light-emitting diode (OLED) device is a surface source with various advantages, such as transparency, uniform luminosity, flexibility, and thin and light panel, which has the opportunity to become the rising star of the lighting industry. Currently, Indium tin oxide (ITO) is the most widely used material for OLED anode; however, ITO thin film is not favorable for producing flexible OLED devices and indium is the rare metal; therefore, lots of researchers devote themselves to seeking the transparent conductive material to replace ITO thin film. Since lower cost, higher transmittance and better conductivity, silver nanowire thin film has the potential for applying on the substrate of anode of flexible OLED devices (PET substrate). Our research aims at producing silver nanowire thin film with conductivity lower than 15Ω/□ and transmittance higher than 80%, and then applies it on the anode of flexible OLED devices with a series of investigation.
We have successfully produced the silver nanowire thin film with high quality on the glass substrate, which its transmittance is over 85.2% under the visible spectrum and its sheet resistance is 6.3Ω/□. With the same sheet resistance, the transmittance of silver nanowire thin film is better than it of ITO thin film. Furthermore, we also apply it on the substrate of anode of flexible OLED devices and produce the silver nanowire thin film with high quality. The luminance and power efficiency of the OLED devices can reach 30000 cd/m2 (14 V) and 30 cd/A (28 lm/W), respectively.

並列關鍵字

vacuum vapor deposition ； Organic light-emitting diode(OLED) ； spin coating ； silver nanowire

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