有機強耦合共振腔元件設計與發光量測系統架設之研究;Research of organic strong coupling resonator device design and luminescence measurement system

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题名:	有機強耦合共振腔元件設計與發光量測系統架設之研究;Research of organic strong coupling resonator device design and luminescence measurement system
作者:	呂揚翰;Lu,Yang-Han
贡献者:	光電科學與工程學系
关键词:	有機強耦合;共振腔;發光量測系統;strong coupling;resonator;luminescence measurement
日期:	2015-08-28
上传时间:	2015-09-23 11:32:17 (UTC+8)
出版者:	國立中央大學
摘要:	本論文主要探討有機強耦合共振腔元件之結構設計以及其發光特性之量測系統架設。在元件結構的設計部分，利用時域有限差分法( finite-difference-time-domain method, FDTD )和膜矩陣( matrix of thin film )等模擬工具設計出一intra-cavity pumping強耦合共振腔元件，其中結合有機高吸收染料分子薄膜作為產生強耦合能態的媒介以及紅光有機發光二極體( organic light emitting diode, OLED )作為產生強耦合能態發光之光汞源，並模擬其Polariton能態。在設計過程中，藉由調整有機染料分子薄膜堆疊層數，以及二氧化矽空間層的厚度，可使得電場分佈於高吸收染料分子薄膜層和紅光發光層具有相對強度極大值，讓共振腔元件獲得最佳化的強耦合效率以及發光效率。之後分析紅光有機發光二極體，其中發光層以TPB3和DCJTB作為主體與客體材料，探討DCJTB的摻雜濃度對放光頻譜的影響。在摻雜濃度為2%的OLED得到放光頻譜峰值為600 nm，吻合整體設計的強耦合共振腔元件的polariton能態下支(Low branch)最低能量，即可利用此紅光發光層直接激發polariton能態最低能量的發光，避免激子－激子淬熄效應造成激發效率的損耗。為了進一步在實驗上觀察元件強耦合發光現象，必須要獲取光譜(包含光強)與角度的色散資訊。因此我們針對600 nm的發光中心波段進行一次性多角度光譜量測系統的設計。我們根據超光譜原理，設計出一套能即時取得光譜維度與角度維度訊息的量測系統。量測系統有效擷取角度範圍為-60o~60o，解析度為1o，波長範圍為455~645 nm，解析度為0.1 nm。此系統的優點為大幅縮短有機元件各角度光譜的量測時間，可在元件發光最佳化的條件下獲取準確的色散關係與相對光強資訊。 ;The study mainly refers to the design of organic red-light strongly-coupled cavity device and luminescence measurement system. In terms of design for strongly-coupled cavity device which is designed with simulation tool of finite-difference-time-domain method, (FDTD) and matrix of film. The device which is combined with high absorption of organic dye molecules (as a medium for produce a strong coupling energy states) and the red organic light emitting diode (OLED) (as pumping source for produce a strong coupling state). The device in electroluminescence state has relative maximum electric field intensity on high absorption dye molecular thin film and red light emitting layer by tuning the stack layers of organic high absorption dye molecular thin film and thickness of SiO2 spacer layers, thus, better strong-coupled efficiency and luminescence efficiency of the device could be achieved. On the other hand, To analyze the red-light OLED as light emitting layer is combined with TPB3 (host) and DCJTB (guest), to discuss a spectrum is affected by guest doping ratio in light emitting layer To dope concentration of 2% of OLED with an emission spectrum which peaks at 600nm, to match the device design for low branch lowest energy of polariton energy states, it can exciting polariton lower branch state, so can use this red light emitting layer directly to excite polariton lowest energy state to light, to avoid excitation efficiency loss the exciton - exciton quenching effects caused by the exciton - exciton quenching effects. In order to observe polariton Low branch lowest energy was excited, we must capture the spectrum (include the intensity of light) and the angle dispersion information. Therefore, we design one-snap-shot multi-angle spectrum measurement system for luminesce (center wavelength at 600 nm), such that system catch the dispersion curve (comprising spectrum dimension and angular dimension information) of the element could be obtained from images being caught. An effective spectra range from 455~645 nm (resolution: 0.1 nm) and angular range from -60o~60o (resolution: 1 deg), according correction and sampling for snap image. The system could reduce acquisition time for spectrum information dependent on angular position and obtain accurate dispersion relation and intensity information in the Optimization conditions for light emitting device.
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