Using conventional method of making visible light emitting porous silicon, an emitting sample with even visible light,detected by naked eyes. is prepared on unpolished polycrystal silicon wafer.

• 用制备发光多孔硅样品的常规电化学方法，在未抛光多晶硅表面，成功地制备出了均匀地发射肉眼可分辨的可见光样品。