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ZnO/Al2O3 Core-shell Nanorod Arrays: Processing, Structural Characterization, and Luminescent Property

  • Cheng-Ying Chen (a1), Chin-An Lin (a2), Miin-Jang Chen (a3), Gong-Ru Lin (a4) and Jr-Hau He (a5)...

Abstract

We reported the aqueous chemical method to fabricate the well-aligned ZnO/Al2O3 core-shell nanorod arrays (NRAs). The shell is composed of α-Al2O3 nanocrystals in amorphous Al2O3 layers. The photoluminescence (PL) measurements showed that the enhancement of near-band-edge emission in ZnO NRAs arrays due to the addition of Al2O3 shell was observed. The Al2O3 shell layer resulting in flatband effect near ZnO surface leads to a stronger overlap of the wavefunctions of electrons and holes in the ZnO core, further enhancing the NBE emission.

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ZnO/Al2O3 Core-shell Nanorod Arrays: Processing, Structural Characterization, and Luminescent Property

  • Cheng-Ying Chen (a1), Chin-An Lin (a2), Miin-Jang Chen (a3), Gong-Ru Lin (a4) and Jr-Hau He (a5)...

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