在本論文中，我們利用摻雜金奈米粒子與雷射退火處理兩種方式改善有機高分子太陽能電池元件特性。在電洞傳輸層中摻雜金奈米粒子後使元件短路電流與填充因子有明顯的提升，因為金奈米粒子的局部表面電漿共振使局部電場提升的現象，不只增強元件主動層光吸收效率使激子的產生率提升，同時激子也能有效的分離成電子和電洞。雷射退火則是使用在P3HT吸收光譜範圍的532奈米綠光雷射，針對雷射的光處理效應，因此實驗中所使用的瓦數只有50 mW。主動層經過雷射退火後，高分子P3HT鏈的共軛長度增加，分子的結晶性也有所提升，因而改善P3HT的π電子傳輸特性。結合以上兩個方法與傳統熱退火處理可以大幅度改善元件特性，本論文中最佳元件製備條件為電洞傳輸層中摻雜金奈米粒子之體積比為1:2，並對主動層同時進行雷射(50 mW)與熱退火(130 oC)處理五分鐘。與其他團隊的熱退火處理相比可減少一半的製程時間。其最佳的元件特性之開路電壓為0.61 V、短路電流為11.566 mA/cm2、 理想因子為0.636、功率轉換效率可達4.487 %。

In this thesis, we fabricated the organic polymer solar cells with doping Au nanoparticles (NPs) and laser annealing to enhance power conversion efficiency. We doped Au NPs into hole transport layer, and found that the short-circuit current density and fill factor of device improved obviously. The local enhancement of the electromagnetic field originated from the excitation of the localized surface plasmon resonance (LSPR) and increased the absorption efficiency of active layer. The LSPR effect not only increased the rate of exciton generation but also improved the probability of exciton dissociation. We also used 532 nm green light laser as the laser annealing source because the maximum intensity of P3HT absorption spectrum is located at the green light region. To focus on the light annealing effect, the laser power we used only about 50mW. After laser annealing, we found that the conjugation length of P3HT is increased and structure became more crystallized. Hence, the property of the π electron transport is enhanced. Combining these two methods with conventional thermal annealing process can improve device characteristic significantly。The best device in our experiment is with parameter of doping Au NPs into PEDOT:PSS with volume ratio of PEDOT:PSS and Au NPs in 1:2 and treat with laser and thermal annealing simultaneously for 5 minute. Laser annealing can reduce half processing time which compare with thermal annealing. The optimum device has the open-circuit voltage (Voc) of 0.61 V, short-circuit current density (Jsc) of 11.566 mA/cm2, fill factor (FF) of 0.636, and power conversion efficiency (PCE) of 4.487 %, respectively.

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