Hybrid Dendrimer/Semiconductor Nanostructures with Efficient Energy Transfer via Optical Waveguiding
黃俊淳1*, 林子能1, 審志霖1, 褚健銘2, 郭浩中3
1物理系, 中原大學, 桃園縣, Taiwan
2化學系, 中原大學, 桃園縣, Taiwan
3光電所, 交通大學, 新竹市, Taiwan
* presenting author:黃俊淳, email:xz7364031@hotmail.com
We have demonstrated a nonradiative energy transfer from the InGaN quantum well (QW) to polyamidoamine (PAMAM) dendrimers via optical waveguiding by observing a reduction of the photoluminescence (PL) decay time. The energy transfer follows a 1/d2 dependence on the distance between InGaN QW and PAMAM dendrimers, suggesting a layer-to-layer dipole coupling. The maximum energy transfer efficiency of this system can be as high as 72%, promising for the realization in sensing applications. Upon increasing the generation of PAMAM dendrimers the transfer energy efficiency increases exponentially, which can be explained by the increased surface coverage in the higher generation.

Keywords: Energy transfer , PAMAM Dendrimers, Waveguiding