Article Title

Formation and optical properties of ZnO:ZnFe₂O₄ superlattice microwires

Authors

Yun Li, State Key Laboratory of Chemo/biosensing and Chemometrics (CBSC), Hunan University, Changsha 410082, China
Guozhang Dai, State Key Laboratory of Chemo/biosensing and Chemometrics (CBSC), Hunan University, Changsha 410082, China School of Materials Science and Engineering (MSE), Beijing Institute of Technology, Beijing 100081, China
Chunjiao Zhou, State Key Laboratory of Chemo/biosensing and Chemometrics (CBSC), Hunan University, Changsha 410082, China
Qinglin Zhang, State Key Laboratory of Chemo/biosensing and Chemometrics (CBSC), Hunan University, Changsha 410082, China
Qiang Wan, State Key Laboratory of Chemo/biosensing and Chemometrics (CBSC), Hunan University, Changsha 410082, China
Limin Fu, Chemistry Department, Renmin University of China, Beijing 100872, China
Jianping Zhang, Chemistry Department, Renmin University of China, Beijing 100872, China
Ruibin Liu, School of Materials Science and Engineering (MSE), Beijing Institute of Technology, Beijing 100081, China
Chuanbao Cao, School of Materials Science and Engineering (MSE), Beijing Institute of Technology, Beijing 100081, China
Anlian Pan, School of Materials Science and Engineering (MSE), Beijing Institute of Technology, Beijing 100081, China
Yunhong Zhang, School of Materials Science and Engineering (MSE), Beijing Institute of Technology, Beijing 100081, China
Bingsuo Zou, State Key Laboratory of Chemo/biosensing and Chemometrics (CBSC), Hunan University, Changsha 410082, China School of Materials Science and Engineering (MSE), Beijing Institute of Technology, Beijing 100081, China

Keywords

ZnO, superlattice microwire, micro-photoluminescence, micro-Raman spectroscopy

Abstract

Pure ZnO hexagonal microwires and Fe(Ⅲ)-doped ZnO microwires (MWs) with a novel rectangular cross section were synthesized in a confined chamber by a convenient one-step thermal evaporation method. An oriented attachment mechanism is consistent with a vapor–solid growth process. Photoluminescence (PL) and Raman spectroscopy of the Fe(Ⅲ)-doped ZnO MWs and in situ spectral mappings indicate a quasi-periodic distribution of Fe(Ⅲ) along a one-dimensional (1-D) superlattice ZnO:ZnFe2O4 wire, while PL mapping shows the presence of optical multicavities and related multimodes. The PL spectra at room temperature show weak near-edge doublets (376 nm and 383 nm) and a broad band (450–650 nm) composed of strong discrete lines, due to a 1-D photonic crystal structure. Such a 1-D coupled optical cavity material may find many applications in future photonic and spintronic devices.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-010-1036-y

Publisher

Tsinghua University Press

Recommended Citation

Yun Li,Guozhang Dai,Chunjiao Zhou,Qinglin Zhang,Qiang Wan,Limin Fu,Jianping Zhang,Ruibin Liu,Chuanbao Cao,Anlian Pan,Yunhong Zhang,Bingsuo Zou, Formation and optical properties of ZnO:ZnFe2O4 superlattice microwires. NanoRes.2010, 3: 326–338