The optical properties of ZnO hexagonal prisms grown from poly (vinylpyrrolidone)-assisted electrochemical assembly onto Si (111) substrate

Y L Liu; Y C Liu; W Feng; J Y Zhang; Y M Lu; D Z Shen; X W Fan; D J Wang; Q D Zhao

doi:10.1063/1.1883633

The optical properties of ZnO hexagonal prisms grown from poly (vinylpyrrolidone)-assisted electrochemical assembly onto Si (111) substrate

J Chem Phys. 2005 May 1;122(17):174703. doi: 10.1063/1.1883633.

Authors

Y L Liu¹, Y C Liu, W Feng, J Y Zhang, Y M Lu, D Z Shen, X W Fan, D J Wang, Q D Zhao

Affiliation

¹ Center for Advanced Optoelectronic Functional Materials Research, Northeast Normal University, Changchun, People's Republic of China.

PMID: 15910056
DOI: 10.1063/1.1883633

Abstract

ZnO hexagonal prisms have been grown from poly (vinylpyrrolidone)-assisted electrochemical assembly onto p-type Si (111) substrate. These ZnO prisms arrays are highly (0002) orientated. The (0001) end facets and {1010} side facets of the hexagonal prisms are well defined. The photoluminescence (PL) spectrum of these ZnO prisms shows an intense ultraviolet near band-gap emission with a full width at half maximum of 86 meV at room temperature. The low-temperature PL spectrum is split into well-resolved free and bound exciton emission lines. The temperature dependence of the exciton emission intensities shows a nonmonotonic decaying behavior, which can be explained by the existence of interfacial states.