Synthesis of Zn2SnO4 nanowires and their photoluminescence properties.
Single-crystalline Zn2SnO4 nanowires were successfully synthesized on a photoresist-coated Si substrate using a facile chemical vapor deposition method. The growth of the nanowires followed a self-catalytic vapor-liquid-solid process. During annealing, the photoresist was carbonized into a complex glassy and graphite carbon structure. The immiscibility between the carbon layer and the in-situ formed Zn2SnO4 was a prime factor in the formation of the one-dimensional Zn2SnO4 nanowires. A broad blue-red emission band centered at 490.4 nm was observed in the photoluminescence spectrum of these nanowires, and it was related to the oxygen vacancies in these nanowires.
Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
Ming
M
Lei
Fung-Luen
FL
Kwong
Dickon H L
DH
Ng