以溶液製程製作可撓性半透明之石墨烯光感測器

石墨烯的光學和電子性能的豐富性吸引了極大的興趣。石墨烯具有高的電子傳導性和光學透明性，除此之外還具有柔軟性，堅固性和環境穩定性。我們可以充分地利用其獨特的光學和電子特性的組合，應用在太陽能電池和發光元件、觸摸螢幕、光感測器和雷射上。在本論文中，我們使用了全溶液製程法來製作石墨烯光電感測器元件，製程方法並非一般傳統方法中使用化學氣相沉積法或是電子束技術，溶液製程方法可簡化製程，並大幅降低製作成本，實現大面積半透明的石墨烯光電感測元件。首先我們裁切合適大小的基板，經過基本的洗淨將基板表面清洗乾淨，接著使用石墨烯懸浮液旋塗於基板上，再同樣使用旋塗塗佈奈米銀線製作電極。本論文將使用各項儀器檢測所製作之石墨烯元件之特性，我們使用拉曼光譜儀檢測元件之石墨烯層狀況，分析結果樣品上確實有著石墨烯，並得知樣品為數層石墨烯結構；使用原子力顯微鏡AFM(Atomic Force Microscop)觀察元件之石墨烯層表面狀態，得知其表面石墨烯堆疊狀況並計算其平均厚度；使用IV量測儀器以及太陽光模擬器分析元件之工作狀況，發現元件有著分明的光暗電流，會隨著光強度增加而提升其光電流，以及清楚的時間響應反應。結果上我們確實的使用低成本的溶液製程製作高穿透度(65%)明顯光暗電流時間響應的可撓性光感測器元件。

關鍵字

溶液製程，石墨烯

並列摘要

Graphene has attracted large interest in photonic applications because of high electronic's conductivity and optical transparency , especially it has softness , durability and stability of environment . We can sufficiently use which has unique optical and electronic property , it can apply to solar battery and beaming component 、touch screen 、photodetector and laser. In this dissertation , we use full solution- procedure to make graphene photodetector which isn't traditional procedure by chemical vapor deposition or e-bean .Solution- procedure can be simplify and significantly reduce cost to achieve huge area of half- transparent's graphene photodetector.First we have to cut suitable size for substrate , then clean the substrate's surface , after that , we spin coating on substrate by graphene and use same steps as above to make electrode by Ag nanowires . This dissertation will detect property of graphene photodetector by instrument as below , we use Raman spectra to detect status of graphene which shows graphene exist on analyzed sample and lamellar structure ； We use AFM to observe graphene's surface of component which can know lamellar situation and calculate thickness ；we use IV measure instrument and sunny simulator to analyze ability of component which has distinct on/off current ratio was observed , it will elevate photocurrent with strength of light and clear response time . We successfully make flexible photodetector which has high transparent (65%) and clear response time in result .

並列關鍵字

solution process，graphene photodetector

參考文獻

[1] Novoselov, K. S., Geim, A. K., Morozov, S. V., Jiang, D., Zhang, Y., Dubonos, S. V., et al. (2004). Electric Field Effect in Atomically Thin Carbon Films. Science, 306(5696), 666-669.

[2] Feldman, Benjamin E., et al. "Unconventional sequence of fractional quantum Hall states in suspended graphene." Science 337.6099 (2012): 1196-1199.

[3] Roddaro, S., et al. "The optical visibility of graphene: interference colors of ultrathin graphite on SiO2." Nano letters 7.9 (2007): 2707-2710.

[4] Li, Xiaolin, et al. "Chemically derived, ultrasmooth graphene nanoribbon semiconductors." Science 319.5867 (2008): 1229-1232.

[5] Obraztsov, A. N., et al. "Chemical vapor deposition of thin graphite films of nanometer thickness." Carbon 45.10 (2007): 2017-2021.

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以溶液製程製作可撓性半透明之石墨烯光感測器

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