箝入不同大小之奈米金粒子以提升有機太陽能電池效率

有機太陽能電池為未來極有潛力之研究目標，由於其較低之製程成本以及較容易之製作過程，近年來已成為各方研究重點。不過相較於無機太陽能電池，在光電轉換效率上仍然有一段差距，為了改善有機太陽能電池之光電轉換效率，除了在主動層材料之選用外，改變其元件結構或加入不同種類奈米金屬粒子於元件各層中為較容易之改善方法。本論文主要研究目標為於有機太陽能電池之電洞傳輸層中，箝入不同粒徑大小之奈米金粒子，並利用不同粒徑大小之奈米金粒子其表面電漿共振效應及散射光能力使得有機太陽能電池元件在各項光電效率量測上有所提升。於本實驗中可得知，由四氯金酸及檸檬酸鈉所還原出之奈米金粒子必須以去離子水稀釋十倍作為奈米金粒子種子溶液，並以體積百分比10 %作為摻雜入電洞傳輸層之最佳條件。本實驗利用simple growth method 將奈米金粒子進行成長，其粒徑大小可由22 nm成長至40~50 nm，並將不同粒徑大小之奈米金粒子摻雜入電洞傳輸層中，其中以摻雜粒徑大小為30~35 nm之奈米金粒子之元件能得到最高短路電流值(Jsc)13.22 mA/cm2及最高之光電轉換效率值(PCE)4.67 %，相較於本實驗之對照組，光電轉換效率提升29.4 %(由3.61 %提升至4.67 %)。

關鍵字

奈米金；有機太陽能電池

並列摘要

Organic solar cells are promising alternative energy owing to low fabrication cost and simple fabrication processes. Although organic solar cells have many advantages comparing with inorganic solar cells, the efficiency of organic solar cells was still inferior to the one of inorganic solar cells. Increasing the device efficiency is essential for real commercialization. In this work, gold nanoparticles are incorporated in the hole injection layer, poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS). We found that the device efficiency was enhanced when 10% gold nanoparticles of 22 nm were blended with PEDOT:PSS. We also synthesized gold nanoparticles with various diameters by adjusting the experimental conditions. The device efficiency was enhanced by 29.4 % (power conversion efficiency from 3.61 % to 4.67 %) through blending 10% gold nanoparticles of 30~35 nm. Further increasing of the diameter resulted in poor efficiency.

並列關鍵字

organic solar cell ； gold nanoparticles

參考文獻

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箝入不同大小之奈米金粒子以提升有機太陽能電池效率

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