期刊
APPLIED SURFACE SCIENCE
卷 488, 期 -, 页码 22-29出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2019.05.009
关键词
Nanorods; Semiconductors; Optoelectronics
类别
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2018R1D1A1B07051474, 2018R1D1A1B07051461, 2018R1D1A1B07050237, 2016R1A6A1A03012877]
- National Research Foundation of Korea [2018R1D1A1B07051461, 2018R1D1A1B07051474] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Hafnia zinc oxide (HfxZn1-xO) nanorod-like structures were processed for photoswitching applications through a facile chemical strategy. Their crystalline structure and phase purity were examined by X-ray diffraction and Raman analysis. The evolution of HfxZn1-xO in rod-like configuration was inferred through scanning and transmission electron microscopy. The band gap values of HfxZn1-xO were estimated using Tauc's plot to be around 2.89-3.11 eV. The association of multiple defects within the hafnia based nanorods was further substantiated through luminescence results via sub-band signals in near visible region. Nyquist and bode plots of HfxZn1-xO nanorods were extracted from the electrochemical impedance spectroscopic results to evaluate the role of grain boundaries on their conductivity values. The electrical properties of HfxZn1-xO nanorods including their carrier density were estimated by capacitance vs. voltage (1/C-2 vs. V) measurements. The photoswitching potential of n-HfxZn1-xO was investigated by spin casting the nanostructures on p-Si and investigating the diode's charge transfer characteristics. The Hf composition in the respective diode architecture was found to influence their corresponding photocurrent values.
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