以三嗪衍生物作為藍色磷光有機發光二極體主體材料及並四苯-矽混成太陽能電池

Abstract

本篇論文主要研究有兩大項為以三嗪衍生物作為藍色磷光有機發光二極體主體材料及並四苯-矽混成太陽能電池。 對於藍光光有機發光二極體而言，提高效率及載子的平衡在白光中扮演了很重要的角色。由於2,4,6-triphenyl-1,3,5-triazine derivatives (TRZs) 擁有很高的lowest unoccupied molecule orbital (LUMO)能階，於是將新材料當作發光層中的主題，如此可以使得電洞更加容易將能量轉移給客體。我製作了一系列不同濃度以dium(III)bis(4,6-(difluorophenyl)pyridinato-N,C2’)picolinate (FIrpic)當作客體的藍光磷光有機發光二極體，其中電流效率最高到達 18.85 cd/A 和有相當低的驅動電壓約9.68V (100mA/cm2) 。 另一方面，在混成太陽能電池上我使用擁有單態分裂(singlet fission)能力的並四苯製作製作了三個元件分別為 TRPL 的光學量測元件、光檢測器及並四苯-矽混成太陽能電池。 在TRPL的光學量測上面我們可以清楚的看到在無機及有機之間的能量轉移。接著在我所做的光檢測器可以量測到它的光電訊號。然後我們製作混成太陽能電池並且量測它在光電訊號上的表現。最高光電轉換效率可以到達 2.34 % 是使用poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) 當作一個有機的吸收體。而以並四苯當作一個有機的吸收體最高光電轉換效率可以達到1.47 %。

The objectives of the researches are two topics about the blue phosphorescence organic light emitting diode (PHOLED) and hybrid solar cell. For the blue PHOLED, the high efficiency and carriers balance plays an important role in white-OLED. 2,4,6-triphenyl-1,3,5-triazine derivatives (TRZs) have higher lowest unoccupied molecule orbital (LUMO) material, which will help the hole transport to the dopant easier by TRZs as host. I fabricated the various concentration of dium(III)bis(4,6-(difluorophenyl)pyridinato-N,C2’)picolinate (FIrpic) as guest for the blue PHOLED. The highest current efficiency can reach about 18.85 cd/A and with a lower turn on voltage at 9.68V in100mA/cm2. For the hybrid solar cell, solar cell plays an important role on green energy while expand of energy demand and environmental awareness. We fabricated Si-Organic heterojunction (SOH) solar cell with organic layer such as tetracene with photoelectron generate and singlet fission characteristics. To confirm the energy transfer from organic to inorganic, we fabricated photodiode (PD) to measure the responsivity. The PD device has parallel electrode on silicon surface and deposit organic layer between the electrodes gap. After the PD fabrication, we start to fabricate SOH solar cell. The highest power conversion efficiency (PCE) reaches about 2.34 % by the poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) as organic layer. Tetracene as organic of hybrid solar cell has PCE about 1.47 %.