本研究利用高波段有機發光二極體(organic light emitting diode, OLED)成功製備出仿真實夕陽光之人造夕陽光光源；此人造夕陽光，具有如夕陽般迷人的光色之外，亦呈現高度的太陽光光譜相似度(Sunlight spectrum resemblance, SSR)和極高的演色性(Color rendering index, CRI)。
類夕陽之橘黃光元件表現，在亮度1,000 cd/m2下，SSR、CRI分別可達，82%、90；類夕陽之黃白光元件表現為87%、92。元件高相似度的原因為:(1) 使用夕陽光光色互補染料。(2)使用具備電洞調制功能的1,3,5-tris (N-phenyl-benzimidazol-2-yl) benzene (TPBi)置於兩發光層之間，使兩發光層皆能有效放光，進而得到高太陽光光譜相似度與超高演色性。

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