本文發表的一系列聚芴高分子結合了不同的陰離子,其中包括 BF4-、 PF6
-在側鏈取代基上,在此聚芴高分子除了要發出藍光之外,還要扮演電 解質藉由離子解離建立 p-n 摻雜區域的角色,此外為了產生白光,我們在 聚芴高分子的主鏈上合成黃光的苯并硒二唑單體,分別為 P1-BF4、P1-PF6, 用來製作 LEC 元件。實驗中 P1-BF4、P1-PF6在固態元件電激發光皆是波長 落在 430 奈米、560 奈米的白光頻譜。
使用 P1-BF4、P1-PF6兩種材料製作固態 LEC 元件,本身即具有離子性 不需要摻入額外的離子性鹽類,又因為是單一發光層材料,所以不會有相 分離現象,更不需額外摻入 PEO 減緩相分離,成功簡化了製程步驟。使用 不同的陰離子不會造成光色的不同,而在電性的表現上則是帶有 PF6-的表 現較為亮眼。本文所提出的材料,成功做出到目前為止的高分子白光 LEC 元件的新紀錄,其中包括發光效率 1.56 流明/瓦、演色性指數大於 85、純 度極高的白光光色。
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