These thin-coated layers could remarkably improve the UV band-edge photoluminescence of the nanoflowers without changing their morphologies. Our method can provide an effective way to enhance the performance of the possible ZnO nanostructure devices. Acknowledgments This work is supported
by the National Natural Science Foundation of China under grants 10904116, 11074192, 11175135, and J0830310, the foundation from CETC No. 46 Research Institute and the Fundamental Research Funds for the Central Universities 2012202020215, 2012202020210. The authors would like to thank QK Jiang for the technical support. References 1. Saito Y, Matsumoto T: Carbon nano-cages created as cubes. Nature (London) 1998, 392:237.CrossRef 2. Chopra NG, Luyken RJ, Cherrey K, Crespi VH, Cohen ML, Louie SG, Zettl A: Boron nitride nanotubes. Vactosertib Science 1995, 269:966.CrossRef 3. Morales AM, Lieber CM: A laser ablation method for the synthesis of crystalline semiconductor
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