新穎的生物材料脫氧核醣核酸 (deoxyribonucleic acid，DNA)由於其特殊的結構和性質使它在奈米科技的應用上日趨廣泛，近年來，以DNA結構做為模板成長金屬奈米粒子的應用在電子元件領域更是越來越多。
不同於以往複雜的化學製備方法，本論文以DNA生物材料為模板利用光化學法(photochemical method)製備銀奈米粒子，使奈米粒子成長於其中並藉由不同波段可見光源改變其形態，藉此製造出不同形狀的奈米粒子，我們使用三種波段的可見光：紫光LED、藍光LED和紅光LED，成功地於DNA模板中製造三種不同形狀的奈米粒子並將其應用於太陽能電池，研究發現利用金屬奈米粒子的散射效應，不同形狀的奈米粒子會在元件上對應不同波段的外部量子效率提升，而光電流最多能提升6%。
以DNA模板合成金屬奈米粒子的製程方法簡單，且在元件製作上大幅減少了製成時間及成本，再配合不同波段的光源照射來控制其表面電漿共振的波段，這些特性將能在有機發光二極體、表面增強拉曼散射和生物感測等領域有更廣泛及多功能性的應用。

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