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Effect of growth parameters on the morphology and optical properties of ZnO nanocolumn arrays

WENYANG MA1, LINHUA XU1,2,* , AOXIN ZANG1, ZHEN TIAN1

Affiliation

  1. School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
  2. Laboratory for Optoelectronic Functional Materials and Devices，Nanjing University of Information Science & Technology, Nanjing 210044, China

Abstract

As a functional material, ZnO nanocolumns will be widely used in optoelectronic and microelectronic devices, but the research on ZnO nanocolumns produced by hydrothermal method has been rarely reported. In this study, we used hydrothermal method to grow ZnO nanocolumn arrays under different parameters (seed-layer thickness, growth time, zinc source), and compared their structure, morphology and optical properties. These ZnO nanocolumns exhibit good homogeneity and crystalline quality. The increase of seed-layer thickness and growth time is beneficial to obtain nanocolumn arrays with high transmittance and good alignment along the c-axis. The photoluminescence spectra show that the samples have strong yellow-green and red emissions, which makes them potentially useful in display devices..

Keywords

Zinc nanocolumns, Hydrothermal method, Absorption spectra, Optical bandgap, Photoluminescence.

Submitted at: Feb. 11, 2023
Accepted at: Feb. 12, 2024

Citation

WENYANG MA, LINHUA XU, AOXIN ZANG, ZHEN TIAN, Effect of growth parameters on the morphology and optical properties of ZnO nanocolumn arrays, Journal of Optoelectronics and Advanced Materials Vol. 26, Iss. 1-2, pp. 36-41 (2024)