電漿子與高折射率奈米粒子混合量子點的光學特性與螢光增強效益

Abstract

本論文研究各種奈米粒子與量子點的光學特性及應用，分別為在奈米尺度下具有特殊光學活性的金奈米粒子、作為新穎電漿子材料的氮化鈦奈米粒子、於可見光及近紅外光波段具有高折射率的矽奈米粒子，以及放射波長(Emission Wavelength)位在可見光及近紅外光波段的碲化鎘量子點。探討將平均粒徑為50奈米的奈米金水溶液摻於電洞傳輸層(PEDOT:PSS)中，藉以增加其表面粗糙度與電導性，可有效提升元件的效率。另一部分，透過自組裝的方式結合奈米粒子與量子點，探討透過激子與電漿子間的交互作用所衍生出的增強現象。期望透過矽與二氧化鈦奈米粒子光散射與表面電漿共振的特性，進一步應用於奈米光學的研究。

In this thesis, optical properties and application in nanoparticles and quantum dots are investigated. Including gold nanoparticles (Au NPs) of specific optical properties, titanium nitride nanoparticles (TiN NPs) of the novel plasmonic material, silicon nanoparticles (Si NPs) with high refractive index in visible and near-infrared wavelength, and cadmium telluride quantum dots (CdTe QDs) with emission wavelength in visible and near-infrared region. In this study, we can effectively improve the device’s efficiency enhancement from doping amount of Au NPs with an average diameter 50 nm in the PEDOT:PSS hole transport layer so as increase surface roughness and reduce hole-electron combination rate. We present a method to construct NPs-QDs complexes to study near enhancement of exciton-plasmon interactions. In future, we expect to obtain higher performance solar cell through particular scattering property of silicon and titanium dioxide nanoparticles.