单壁碳纳米管对中的激子能量转移。

Exciton energy transfer in pairs of single-walled carbon nanotubes.

作者信息

Qian Huihong, Georgi Carsten, Anderson Neil, Green Alexander A, Hersam Mark C, Novotny Lukas, Hartschuh Achim

机构信息

Department Chemie and Biochemie and CeNS, Ludwig-Maximilians-Universität München, 81377 München, Germany.

出版信息

Nano Lett. 2008 May;8(5):1363-7. doi: 10.1021/nl080048r. Epub 2008 Mar 27.

DOI:10.1021/nl080048r

PMID:18366189

Abstract

We studied the exciton energy transfer in pairs of semiconducting nanotubes using high-resolution optical microscopy and spectroscopy on the nanoscale. Photoluminescence from large band gap nanotubes within bundles is observed with spatially varying intensities due to distance-dependent internanotube transfer. The range of efficient energy transfer is found to be limited to a few nanometers because of competing fast nonradiative relaxation responsible for low photoluminescence quantum yield.

摘要

我们使用纳米级的高分辨率光学显微镜和光谱学研究了半导体纳米管对中的激子能量转移。由于纳米管间转移随距离变化，在管束内大带隙纳米管的光致发光强度在空间上呈现出变化。由于竞争导致低光致发光量子产率的快速非辐射弛豫，有效能量转移的范围被发现限制在几纳米。