2010-08-012024-05-15https://scholars.lib.ntu.edu.tw/handle/123456789/665468摘要：在本計畫中，我們提出了二個新穎性的系統更進一步提昇P3HT/PcBM系統之光電轉換效率及其長期穩定性: (1) P3HT末端以具有高電洞傳導能力的dendron修飾並且混摻PCBM ；(2) PCPDT末端以具有高電洞傳導能力的dendron修飾並且混摻PCBM。當P3HT與PCPDT末端以不同代(generation)的hole-transporting dendron來修飾時，不但可以調控主動層表面形態，還可以更進一步提升整體的載子遷移速率，即有效增加電子/電洞分離。除此之外，末端以electroactive dendron修飾的高分子，預期可以使原本的高分子半導體進一步降低其能帶隙，進而能更有效的利用太陽光。在元件製程上，我們也將利用溶劑的選擇(沸點、極性)與元件熱處理，調控主動層的表面形態。此外，我們亦將利用結合上述高分子系統；TiOx插層及低能帶隙 PCPDT-acceptor 共聚物之串疊型太陽能電池(tandem solar cell)的技術，以期將效率達到8-10%以上。最後將利用原子層沉積 (atomic layer deposition, ALD)元件封裝技術，使元件能維持較久的生命週期，而希望能達到最終商業化之標準。<br> Abstract: In the proposed project, two new polymer systems are proposed to achieve this goal: (1) P3HT end-functionalized with hole transporting dendrons/ PCBM, (2) poly(cyclopentadithiophene) (PCPDT) end-functionalized with hole transporting dendrons/PCBM. The parent P3HT and PCPDT have relatively high hole mobility around 0.1~1 10-3 cm2/Vs. The end-functionalized different generation of dendrons could not only control the morphology and further enhance the carrier mobility higher than P3HT or PCPDT. Thus, the enhancement of the carrier separation efficiency is expected. Besides, smaller band gaps of the new end-functionalized polymers than the parent P3HT or PCPDT could be achieved by such end-functionalized electroactive dendrons. Process optimization through solvent (boiling point, polarity) or thermal treatment (multi-step curing for inducing the ordered structures) will be employed to control the morphology of active layer. The tandem cell approach (e.g., high band gap P3HT-dendron/TiOx/low band gap P3CPDT-acceptor)will also be used to enhance the efficiency to reach 8-10%. The atomic layer deposition technique will be developed to encapsulate the solar cell devices for enhancing their long-term stability.高分子太陽能電池高載子遷移率低能帶隙polymer solar cellhigh carrier mobilitylow band gap