This article is cited in 1 paper

Morphology control and optical properties of CdSe nanorods by surface ligands

Zhiyuan Lin^a, Jinhua Li^a, Ke Feng^a, Yue Wang^a, Xueying Chu^a, Siyi Hu<sup>b

a</sup> International Joint Research Center for Nanophotonics and Biophotonics, Nanophotonics and Biophotonics Key Laboratory of Jilin Province, School of Science, Changchun University of Science and Technology, Changchun, P.R. China
^b CAS Key Laboratory of Bio-medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu province, P.R. China

Abstract: In this paper, CdSe nanorods were prepared via solvothermal synthesis, the effect of surface ligands on the morphology of nanorods was investigated under the premise by tuning the percentage of surface ligands in the precursors. Experimental results show that the absorption and emission spectrum of CdSe nanorod with different aspect ratio varying from 4:1 to 2:1 have a red-shift, and the aspect ratio gradually decreases as the percentage of tetradecylphosphoric acid (TDPA) in the precursor increases. In addition, the CdSe optical stability improves as the percentage of TDPA increases. It is also shown that the crystal surface, which is not covered by TDPA, has an increased surface energy, which results in rapid growth of the crystal face and the formation of a rod-like structure. As a result, the effects of anisotropic absorption and emission, along the long axis properties can find many applications in the fields of optics, optical materials.

Keywords: cdSe nanorod, surface ligands, morphology control, optical stability.

Received: 04.02.2019
Revised: 13.05.2019
Accepted: 14.05.2019

Language: English

 English version: Technical Physics Letters, 2019, 45:8, 814–819

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