表面電漿共振材料之開發及應用

The Development and Application Design of Surface Plasmon Resonance Active Material

林秉萱(Ping-Hsuan Lin)

指導教授 ： 韋光華

國立交通大學/工學院/材料科學與工程系所/碩士(2009年)

https://doi.org/10.6842/NCTU.2009.00801

摘要

本篇論文主旨為運用化學合成方式製備具有表面電漿共振特性的銀奈米薄片，並探討其共振波長與材料結構。接著，研究材料排列之方法及能量轉移之特性。最後，探討表面電漿共振效應運用於光伏特偵測器元件之效能。
我們運用水相溶液合成方式製備銀奈米薄片。藉由改變NaAOT的量、反應時間、Citrate Acid反應量，以及age time成功調控銀奈米材料之結構形狀與大小，進而改變的表面電漿共振波長特性。本實驗發現，銀奈米材料之表面電漿共振波長可從690nm調控至1400nm近紅外光範圍。藉由改變反應條件，形狀可由圓盤狀、三角薄片至六角薄片。每片六角形薄片為面心立方的單晶結構，薄片朝上的面為(111)晶面。
接著，在排列銀奈米薄片於固態基材這方面的研究，我們運用Interfacial Entrapment Method製備出較為規則排列的薄層。藉由PL觀察到銀薄層能成功轉移能量至導電高分子P3HT。另外，運用UV-vis及XRD觀察不同退火條件對於材料的影響，發現提高退火溫度及延長退火時間都會漸漸的改變材料的結構。最後，我們將上述薄層結合導電高分子P3HT以及碳六十衍生物PCBM，製備光伏特偵測器元件，以提升元件之響應度。
本實驗提供一快速、低成本的方式有效增強光能的運用，未來在光電元件、感測器、光學、磁性光學資料存取等領域皆能有運用的空間。

關鍵字

表面電漿共振

並列摘要

In this thesis we aimed to explore the resonance wavelength and the structure of silver nanoplates, which surface plasmon resonance is one of the distinguished characteristics, by utilizing the chemical synthesis method of aqueous solution. Next, we studied the approaches of silver alignment and its quality of energy transformation. At the end, we examined the performance of how plasmon-active material works with the photovoltaic device.
Conducting an eco-friendly experiment method, we choose aqueous solution method to synthesize silver nanoplates. By altering the quantity and the reaction time of NaAOT, the quantity of citric acid, and the duration of age time, the shapes and the sizes of silver nanoplates will change and which foster surface plasmon resonance transformation. From this experiment we can observe that the wavelength of surface plasmon resonance could be adjusted from 690 nm up to near infrared rays’ range 1400nm. The shapes of silver nanoplates gradually deformed from round, triangle to hexagon under different levels of reaction conditions. Each hexagonal nanoplate was single crystal with face centered cubic structure and (111) top crystal face.
As to the silver nanoplates alignment on solid substrate, we adopted Interfacial Entrapment Method to produce relatively regular alignment. Under photoluminescence measurement, energy transferring from silver film to conductive polymer P3HT was observed. In addition, annealing effect of nanoplates was found by exercising UV-vis and XRD. Under the condition of high temperature and long annealing period, the structure of nanoplates will eventually be destroyed. Therefore, we combined nanoplates with the mixture of conductive polymer P3HT and PCBM to make photovoltaic device in sense of improving the responsivity of both P3HT and PCBM.
This experiment provided a convenient option to augment solar energy application, such as photovoltaic device, sensors, optics and magneto-optic data storage in the future.

並列關鍵字

Surface Plasmon Resonance

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