面向短距离局域网络有机光纤通信系统的高效率边发射有机发光器件的研究

Organic light emitting device (OLED) has an advantage in that the fabrication process which can be performed at room temperature and suit for various substrate material and high luminous efficiency. OLED has been developed for flat panel displays and solid-state lighting. Its high respond speed will be able to realize flexible integrated photonic devices. ..Organic fiber-optic communication LAN system consists of electro-optic conversion device.(OLED), polymer optical fiber (POF), Organic photo detector (OPD). The advantage of simple technology and low cost is the one of the most potential solutions of distance local area network fiber-optic communications. It's has been said that the construction of OLED which is used as electro-optic conversion device is limited to production of bottom emission device structure of the polymer optical waveguide with a 45-degree mirror. .Although the skillful design of this structure, the complex process is difficult adapt to the large-scale production. The maximum external quantum efficiency of BOLED is only 20% due to the limitations of the waveguide mode and the total internal reflection..According to the past work of the silicon-based top-emitting OLED and ultrafast laser micro-nano fabrication, our group proposes the development of silicon-based edge-emitting OLED structure as the electro-optical conversion device, in order to realize high external quantum efficiency, be suitable for mass production and be easy to couple and pack with fiber. .Our primary study:.1)High-efficiency silicon-based p-i-n-structure OLED structure.2)New extrafluorescence emission device structure.3)The combination of high-energy nanosecond laser and double-beam interference to realize DFB structure, in order to achieve efficient edge-emitting.4)Using two-photon polymerization of the polymeric resin material to achieve a specific shape of waveguide in order to increase the coupling efficiency by the means of femtosecond laser micro-nano fabrication...Through the implementation of this project, we will complete all polymeric prototype of optical fiber communication, which will meet the requirements of short-distance optical fiber communication. We will make a great contribution in this area.

有机发光器件（OLED）由于其在室温下就可完成的简单制备工艺、适于各种衬底材料和高的发光效率等优点，除了用于显示之外也正逐步向OLED照明扩展。OLED较高的响应速度使其可作为全有机光纤通信系统的电光转换器件。但目前报道的OLED电光转换器件均为底发射结构，需要在波导上实现45度反射镜，工艺难度高且复杂。本项目根据课题组以往在硅基顶发射OLED以及超快激光微纳加工等方面的工作积累，提出研制硅基边发射OLED结构作为电光转换器件，具有易集成、工艺简单、适于批量制作和便于与光纤耦合和封装的特点。重点研究1）高效率的硅基p-i-n结构OLED 2）新型超荧光发射（Extrafluorescence）器件结构3）利用高能量的纳秒激光器结合双光束干涉制作DFB结构以实现高效边发射4）以飞秒激光微纳加工为手段利用高分子树脂材料的双光子聚合实现特定形状的光波导以增加耦合效率。

有机发光器件（OLED）由于其简单制备工艺、适于各种衬底材料和高的发光效率等优点，除了用于显示之外也正逐步用于照明和通讯光源。OLED 较高的响应速度使其可作为全有机光纤通信系统的电光转换器件。为此本项目重点开展了适用于塑料光纤（POF）的OLED通讯光源的研究。主要研究包括：影响OLED器件工作频率因素及其改善方法，从减小激子寿命，提高激子产率方面入手，提高OLED器件外量子效率，从而提高了频率特性。小分子有机物光栅设计与制备，以及其应用于OLED器件时对器件光电性能的影响。在原研究计划之外我们又提出了一些新的研究思路，将OLED器件分别与POF及平面光波导集成，实现了适用于塑料光纤的发射与传输集成器件。同时，开展了面向塑料光纤通信的有机红光探测器（OPD）的研究，通过增加阴极缓冲层降低器件暗电流。通过本项目的实施，我们基本掌握了适用于全有机短距离光纤通信的相关技术。