有機太陽能電池(Organic solar cell, OSC)的低成本和可彎曲性已經多次被拿來和傳統矽晶電池相比，在實際的應用上面改善有機太陽能電池的低能量轉換效率是很迫切的，近年有許多研究指出轉換效率能夠藉由奈米尺寸的結構幫助光吸收率提升下進而增加能量轉換效率，其中一個提升光吸收率的方式是藉由光子晶體中的光侷限能力將光子晶體結構置入太陽能電池的吸收層中
太陽能電池主要著重於在增強主動層的光學吸收效率，所以我們希望去優化光在吸收層中的藕合效率，因此，藉由光子晶體結構在群速度的限制上就能展示出很大的潛力在太陽能電池的發展上。
在本文中，我們設計兩個2維準週期性光子晶體的奈米柱結構(潘洛斯晶格、阿曼-賓克晶格)然後透過有限時域差分法(FDTD)去計算其能帶結構圖，我們發現阿曼-賓克晶格所組成的光子晶體結構能夠比週期性晶格的光子晶體結構在太陽能電池的吸收層中來得有更好的光抑制能力，而阿曼-賓克晶格的光子晶體奈米柱結構在入射光波長700nm~1000nm的區段也有很明顯的光吸收效果上升。

Organic solar cells (OSC) have various advantages compared with conventional Silicon based solar cells; for example, low cost and flexibility. However, it is necessary to improve the low conversion efficiency of power for many practical applications. There have been a number of recent studies to improve the conversion efficiency of power by increasing the light absorption with the help of nano-sized structures. One method is to use photonic crystal structures in the photoactive layer where the light absorption can be enhanced by trapping light within the photonic structures
For solar-cell designs aimed at enhancing optical absorption in the active layer,so we hope to optimize the coupling efficiency of thelight in active layer.
Hence,the group velocity limited by photonic crystal structures illustrates the potential applications on solar cell,
In this paper, we design the nanorods of 2D photonic quasicrystal lattices(Penrose lattice, Ammann- Beenker lattice) and then using the finite-difference time-domain(FDTD) method to simulate the band gap maps, we find out that photonic crystal nanostructure based on ammann-beenker lattice can support more light absorption by trapping light in the absorbing layer than those in periodic lattices, and the nanorods of ammann- beenker lattice lattice has also obviously promote the light absorption from the wavelength 700 nm to 1000nm.

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