金属镜微腔发光方向性研究

Study on the angular dependence of metal mirror micro-cavities

在抛光的K9玻璃衬底上,制作了结构为玻璃/Ag(30 nm)/Alq(120 nm)/Ag(30 nm)的全金属镜微腔结构。研究了在不同探测角度下器件谐振模式的角色散效应及其光谱半高宽(FWHM)的变化特性。微腔器件的谐振模式随偏离角度的增加而蓝移,当角度从0°到60°时,发光峰值相应地从585.8 nm蓝移到546.6 nm,光谱FWHM从26.8 nm增大到36.6 nm。分析并解释了光谱展宽以及谐振模式角色散效应的原因,提出了抑制微腔器件角色散的方法。

The full metal microcavity with the structure of Glass/Ag（30 nm）/Alq（120 nm）/Ag（30 nm） is fabricated.Angular dependence of the emission spectra and their full width at half maximum（FWHM） values between 0° and 60° are investigated.When changing the diverge angle from 0° to 60°,the resonance wavelength and their FWHM values change from 585.8 nm to 546.6 nm and from 26.8 nm to 36.6 nm respectively.The reasons of the blue shift and broadening of spectrum with increasing of the diverge angle are analysed and the method to compensate for angular dependence is put forwarded.