有機小分子垂直式空間電荷限制電晶體

Abstract

我們首次利用液態製程將有機小分子材料應用於SCLT，由於Spiro-OMeTAD具高溶解性且HOMO(4.9eV)能與MoO3/Al相匹配，優勢在於Spiro-OMeTAD材料本身在高水氧環境下非常穩定，因此我們成功做出具有電晶體特性的有機小分子SCLT，輸出電流為0.07 mA/cm2，開關比可高達70000，另外為提升Spiro-OMeTA SCLT元件的電洞注入能力，在主動區上加一層PEDOT：PSS以幫助電洞注入，輸出電流確實有明顯上升為2.3 mA/cm2，開關比為1500。

This is the first main point of the thesis. It is the first time to apply small molecule material to SCLT by the liquid state process. The small molecule, Spiro-OMeTAD, has high solubility and the HOMO(4.9eV) is match up with MoO3/Al. The Spiro-OMeTAD itself has an advantage which is stable in atmospheric environment, so we successfully fabricate the small molecule SCLT which has the characteristic of transistor. The output current density is 0.07 mA/cm2, on/off current ratio as 70000. In addition to enhance the ability of hole injection, we add a PEDOT：PSS film above the Actice Layer. The output current density is indeed increase, 2.3 mA/cm2, on/off ratio is as 1500. This is the second main point of the thesis.