Highly efficient avalanche multiphoton luminescence from coupled Au nanowires in the visible region

• 来源期刊: 功能材料信息
• 学科: 工学
• 年，卷（期）: 2007,（5）
• 页数: 1页
• 分类号: TB381

摘要

We report highly efficient avalanche multiphoton luminescence(MPL)from ordered-arrayed gold nanowires(NWs).The time-average excitation intensity I_(exc) is as low as 5.0-9.1 kW/cm~2.The intensity of avalanche MPL I_(MPL) is about 10~4 times larger than that of three-photon luminescence,the slope ■logI_(MPL)/■logI_(exc) of avalanche MPL reaches as high as 18.3 and the corresponding polarization dependence of I_(MPL) has a form of cos~(50)■_p.The emission dynamics of avalanche MPL and three-photon luminesc...