Sun Y, Lei H X, Cui H, Yang G W, Li B J, Wang C X
State key laboratory of optoelectronic materials and technologies, School of Physics Science and Engineering, Sun Yat-sen (Zhongshan) University, Guangzhou 510275, People's Republic of China.
Sci Rep. 2014 Oct 30;4:6833. doi: 10.1038/srep06833.
The increasing prosperity of the photonics field has hastened the development of several sub-disciplines, with the aim to create advanced photonic devices, produce photonic circuits and eventually enable all-optical communication. This development has resulted in the demand for micro-nano-sized functional units with specific space dimensions (1D &2D) for subwavelength photon operation purposes. The fundamental task involves a search for available semiconductor materials as micro-nano light sources and optical interconnections; in this regard, finding a white-light source is the most challenging task because typical band-band emission is not possible in the single phase. Using current approaches, which rely on surface-state emission and the integration of various emission components, it is impossible to achieve single-phase, single-unit components with specific space dimensions. Here, we achieved continuous full-color (ultraviolet to red) emission by engineering a single Al4O4C nanowire with Si doping, which created impurity levels in the bandgap and conduction band. High light propagation performance was also observed when blue, green and red lasers were coupled into a single nanowire using a tapered optical fiber. This novel 1D nanostructure is an excellent candidate for use in future photonic circuits as a white-light source or interconnection component.
光子学领域日益繁荣，加速了多个子学科的发展，旨在制造先进的光子器件、生产光子电路并最终实现全光通信。这一发展导致需要具有特定空间尺寸（一维和二维）的微纳功能单元用于亚波长光子操作。其基本任务包括寻找可用的半导体材料作为微纳光源和光学互连；在这方面，寻找白光源是最具挑战性的任务，因为在单相中不可能实现典型的带间发射。使用目前依赖表面态发射和各种发射成分集成的方法，无法实现具有特定空间尺寸的单相、单单元组件。在此，我们通过对一根掺硅的Al4O4C纳米线进行工程设计，实现了连续全色（紫外到红）发射，这在带隙和导带中产生了杂质能级。当使用锥形光纤将蓝色、绿色和红色激光耦合到单根纳米线中时，还观察到了高光传播性能。这种新型一维纳米结构作为白光源或互连组件，是未来光子电路的极佳候选材料。
