摘要:This work presents novel field emission organic light emitting diodes (FEOLEDs) with dynode, in which an organic EL light-emitting layer is used instead of an inorganic phosphor thin film in the field emission display (FED). The proposed FEOLEDs introduce field emission electrons into organic light emitting diodes (OLEDs), which exhibit a higher luminous efficiency than conventional OLED. The field emission electrons emitted from the carbon nanotubes (CNTs) cathode and to be amplified by impact the dynode in vacuum. These field emission electrons are injected into the multi-layer organic materials of OLED to increase the electron density. Additionally, the proposed FEOLED increase the luminance of OLED from 10 820 cd/m2 to 24 782 cd/m2 by raising the current density of OLED from an external electron source. The role of FEOLED is to add the quantity of electrons-holes pairs in OLED, which increase the exciton and further increase the luminous efficiency of OLED. Under the same operating current density, the FEOLED exhibits a higher luminous efficiency than that of OLED.
摘要:用时域有限差分(Finite-Different Time-Domain, FDTD)的分段线形电流密度卷积(Piecewise Linear Current Density Recursive Convolution, PLCDRC)算法研究了含单一介质缺陷层的一维非磁化等离子体光子晶体的滤波特性。从频域角度分析得到微分高斯脉冲的透射系数,在等温近似的条件下,讨论了等离子体的弛豫时间、温度和频率为可调谐参数时的滤波特性。计算结果表明,改变等离子体弛豫时间和频率可以实现对滤波通道的调整,而改变等离子体温度不能实现对谐振频率的调节。