The synthesis of size-controlled 3C-SiC nanoflakes and their photoluminescent properties

Xiujun Fan; Ruquan Ye; Zhiwei Peng; Juanjuan Wang; Ailing Fan; Xia Guo

doi:10.1088/0957-4484/27/25/255604

The synthesis of size-controlled 3C-SiC nanoflakes and their photoluminescent properties

Nanotechnology. 2016 Jun 24;27(25):255604. doi: 10.1088/0957-4484/27/25/255604. Epub 2016 May 17.

Authors

Xiujun Fan¹, Ruquan Ye, Zhiwei Peng, Juanjuan Wang, Ailing Fan, Xia Guo

Affiliation

¹ Institute of Crystalline Materials, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China. College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China. Department of Chemistry, Rice University, Houston, Texas 77005, USA. Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, Texas 77005, USA.

PMID: 27184338
DOI: 10.1088/0957-4484/27/25/255604

Abstract

Size-controlled and high-purity 3C-SiC nanoflakes (NFs) are synthesized on the tips of vertically aligned carbon nanotube (VA-CNT) carpets with a hot-filament chemical vapor deposition (HF-CVD) method. The average diameter and height of SiC NFs can be tuned by changing the thickness of per-deposited Si and growth conditions. The growth process of the SiC NFs is suggested to be dominated by a vapor-solid (VS) mechanism. The prepared SiC NFs exhibit quantum-confinement effects, emitting strong violet-blue photoluminescence (PL) under ultraviolet excitation. The PL peak position changes from 410 to 416 nm as the excitation line increases from 290 to 400 nm. This result opens the possibility for the application of the luminescent solid-state freestanding 3C-SiC NFs in photonics as well as photonics/electronics integration.