Issue 1, 2016

Dislocation-driven growth of porous CdSe nanorods from CdSe·(ethylenediamine)0.5 nanorods

Abstract

Porous CdSe nanorods having a novel flute-like morphology have been prepared facilely via the hydrothermal treatment of CdSe·(en)0.5 (en = ethylenediamine) nanorods as sacrificial templates. During the hydrothermal process, various crystalline imperfections such as stacking faults and twinning planes appear due to lattice mismatches between orthorhombic CdSe·(en)0.5 and hexagonal wurtzite porous CdSe nanorods and subsequently disappear to release mismatched strains. In the self-healing process of defects, due to the imbalance of in-and-out atomic diffusion, point defects of atomic vacancies are heavily generated in CdSe nanorods to produce volume defects of voids eventually. The photoluminescence of CdSe nanorods shifts to the red region and decreases in intensity with the increase of the hydrolysis time as surface states and selenium vacancies increase. The mean lifetime of photoluminescence increases with the increase of the hydrothermal-treatment time as the fractional amplitude of the surface-state-related component increases.

Graphical abstract: Dislocation-driven growth of porous CdSe nanorods from CdSe·(ethylenediamine)0.5 nanorods

Supplementary files

Article information

Article type
Paper
Submitted
07 Sep 2015
Accepted
16 Nov 2015
First published
18 Nov 2015

Nanoscale, 2016,8, 403-410

Dislocation-driven growth of porous CdSe nanorods from CdSe·(ethylenediamine)0.5 nanorods

H. Kim and D. Jang, Nanoscale, 2016, 8, 403 DOI: 10.1039/C5NR06125C

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