材料科学
兴奋剂
锌
金属
冶金
化学工程
无机化学
光电子学
化学
工程类
作者
Erick Gastellóu,Rafael García,Ana M. Herrera,A. Ramos-Carrazco,Godofredo García,G.A. Hirata,José Alberto Luna,R. C. Carrillo-Torres,Jorge A. Rodríguez,Mario Robles,Yani D. Ramírez,Guillermo Martínez-Rodríguez
出处
期刊:Materials
[Multidisciplinary Digital Publishing Institute]
日期:2023-04-21
卷期号:16 (8): 3272-3272
被引量:2
摘要
Mg-Zn co-dopedGaN powders via the nitridation of a Ga-Mg-Zn metallic solution at 1000 °C for 2 h in ammonia flow were obtained. XRD patterns for the Mg-Zn co-dopedGaN powders showed a crystal size average of 46.88 nm. Scanning electron microscopy micrographs had an irregular shape, with a ribbon-like structure and a length of 8.63 µm. Energy-dispersive spectroscopy showed the incorporation of Zn (Lα 1.012 eV) and Mg (Kα 1.253 eV), while XPS measurements showed the elemental contributions of magnesium and zinc as co-dopant elements quantified in 49.31 eV and 1019.49 eV, respectively. The photoluminescence spectrum showed a fundamental emission located at 3.40 eV(364.70 nm), which was related to band-to-band transition, besides a second emission found in a range from 2.80 eV to 2.90 eV (442.85–427.58 nm), which was related to a characteristic of Mg-doped GaN and Zn-doped GaN powders. Furthermore, Raman scattering demonstrated a shoulder at 648.05 cm−1, which could indicate the incorporation of the Mg and Zn co-dopants atoms into the GaN structure. It is expected that one of the main applications of Mg-Zn co-doped GaN powders is in obtaining thin films for SARS-CoV-2 biosensors.
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