本研究在傳統有機太陽能電池中加入奈米結構，希望藉由有機高分子材料施體與受體交界接面的增加，
進而產生更多的激子藉以達到更良好的相分離效果，並給予一個固定擴散路徑使激子能夠順利的到達施體受體之交界接面，
希望藉此路徑控制增加激子擴散至此交界面機率，並在此交界面利用施體與受體之最低未被佔據分子軌域之能階差克服激子之束縛能，
期望能夠分離出更多的電子電洞對，產生更多短路電流藉此提升有機高分子之電池效率。
在製作奈米結構方面，本研究嘗試使用熱奈米壓印技術，並開發出一種新式母模，藉由妥善條件控制已可使壓印之圖形轉移良好，
此成果對於奈米結構應用於太陽能電池技術有著顯著之貢獻。
經由奈米壓印所製作出含有奈米結構之雙層有機高分子太陽能電池元件之短路電流可從0.15顯著提升至1.08 mA/cm2，
填充因子可由最低之0.25提升到0.55。

The objective of this study is to fabricate ordered nanostructure organic solar cells by using thermal nanoimprinting technique.
By using the technique, we are able to appropriately control the donor-accepter interfacial morphology.
When the light is absorbed by the active layer of the organic semiconductor, a bounded electron-hole pairs can be generated, which is so called exciton.
Because of the LUMO difference between the donor and acceptor, the excitons will separate when they diffuse across the donor-acceptor interface.
We create a smooth, direct pathway to make sure that the excitons will reach the interface and then separate. This straight pathway let the charge carries transport to the electrode more effectively.
We develop a new method of making silicon molds. It provides a low cost, highly efficient way to fabricate nanoimprinting molds.
Because the thermal nanoimprinting condition is carefully monitored, there comes a significant improvement in the short-circuit current, fill factor, and the power efficiency.
The current density rises from 0.15 to 1.08 mA/cm2, fill factor increases from the lowest level 0.25 to the highest 0.55.

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