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光聚合法製備量子點有機發光薄膜

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圖 1.1  不同尺寸的量子點對應之發光波長[6]。
圖 1.2  表面原子數與粒徑的大小的關係圖[9] 。
圖 1.3  金屬與半導體電子能態密度與能量關係圖[10]。
圖 1.8  一般量子點與鈣鈦礦量子點能帶結構的比較[13]。  雖然鈣鈦礦量子點具有優良的光電特性及量子效率高等優點,但是 它的穩定性不足是目前最大的致命傷。其原因與鈣鈦礦量子點的低生成 能有關(約 0.1~0.3  eV  ),雖然這可以使適合進行溶液製程加工,但是這 也使它對溼度、熱、光、電場等非常敏感。有機-無機混合之鈣鈦礦量子 點會有降解反應的發生,是因為自身的有機陽離子(甲基銨  CH 3 NH 2 +j 或是甲脒  CH(NH 2 )  2 + )導致。CsPbBr3 量子點則對氧氣、溼氣、光
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