高效率透明有機太陽能電池探討及其應用

Abstract

本論文嘗試用多層結構製作透明有機太陽能電池的陰極，利用了LiF(氟化鋰)/Al(鋁)/Ag(銀)實現了高穿透性的多層導電陰極結構，可以達到50％以上的可見光透光性，並且元件的效率可以達到開路電壓為0.59 V，短路電流密度為6.97 mA/cm2，填充因子可達0.59，而功率轉換效率可以達到2.44 %。此外，我們嘗試在此透明元件之後疊上一個標準元件，利用吸收前面透明元件穿透之後剩餘的光，將入射光達到最大吸收應用，將兩個元件串聯或並聯連接，可以得到較高的開路電壓，或是較大的短路電流密度，並且提昇元件的整體功率轉換效率達到約3.1％。

A multi-layer structure LiF/Al/Ag has been use as the semi-transparent cathode of transparent polymer solar cells. More than 50% transmittance in the visible region has high conductivity. The electrical parameters of photovoltaic device are reached to open circuit voltage = 0.59 V、short circuit current = 6.97 mA/cm2、fill factor = 0.59 and power conversion efficiency = 2.44 %, respectively. Furthermore, a standard device piled behind the transparent device absorbed the rest of illuminated light through transparent device. Two devices was connected by either series or parallel to gain higher open circuit voltage or larger short circuit current. An enhanced power conversion efficiency of 3.1 % can be achieved.