本研究論文以開發有機上轉換元件為背景，同時進行運作機制之解析與開發新穎結構。由於上轉換元件具備獨特之波長轉換功能，可將不可見光區段之資訊轉換為肉眼可辨識之影像，因此在生醫或檢測方面具有極被看好之應用潛力。以光吸收後產生激發態與可利用載子為基礎，於論文中驗證電洞供應、電子供應及串座型元件，並且達到文獻發表目前最高之轉換效能，量子效率分別為4.5%、3.6%以及7.1%。另外，為簡化開發流程，研究內開發出獨特之過渡結構‟光敏載子生成單元”作為協助工具，並可與有機太陽能電池之結構相互參照其特性，大幅簡化元件研發流程並可作為材料檢測之先期程序。於原理探討部分，除完整解釋其結構設計、調整原則及優缺特性之外，亦以自行提出之量測法驗證量子效能之極限，藉由內嵌鏡面型結構，將量子效能切分為兩獨立單元之計算，使得未來設計之自由度大幅提升。最終，以影像應用為目標，實際展示其優良之影像顯示特性，線對解析度達到4000 dpi以上，並用以觀測紅外光影像，驗證其穿透微粒效果及靜脈形狀之檢測，證實上轉換元件於生醫辨識與環境影像感測之應用。

In this article, the working principle and efficiency-theory of organic upconverter are investigated in detail. Based on the mechanism of conductive-carriers generation to control the process of photon-carrier-photon conversion, the upconverter utilizes a simple architecture through directly depositing the organic materials of organic light emitting diodes and organic photovoltaic in serious-connection. Anodic, cathodic, and tandem type upconverters will be demonstrated with different arrangements of charge generation layer and light-emitting components. Also, with embedded mirrors, an upconverter which possesses two individual units and ideal calculation of external quantum efficiency is assembled. Not only the high efficiency, but also the different wavelength-conversion will be demonstrated in novel structure development in line with certain innovative theories. Meanwhile, a new ideal of quasi-device, namely, photosensitive-charge-generation unit, is proposed to simplify the process enormously and exceptionally. The real image-conversion application will ultimately be displayed with excellent display properties.

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