101. Production and Characterizations of Sol–Gel-Derived Li, Cu:NiOx Particles: An Investigation on the Effects of Li and Cu Incorporation.
- Author
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Uzunbayır, Begüm, Akalın, Salih Alper, Yıldırım, Serdar, Erol, Mustafa, and Oğuzlar, Sibel
- Subjects
COPPER ,FRACTIONS ,X-ray photoelectron spectroscopy ,NICKEL oxide ,P-type semiconductors ,SEMICONDUCTOR materials ,PHOTOLUMINESCENCE measurement - Abstract
Nickel oxide, a p-type semiconductor material with a large band gap (~ 3.6–4.0 eV), has gained interest from researchers due to its recent and widespread uses. In this work, pristine and doped (Li and Li, Cu) NiO
x particles were obtained by the sol–gel method with different fractions (Li: 0.05; Cu: 0.00, 0.05, 0.1, 0.15, 0.30). Phase structures, functional groups, elemental analyses, and optical properties were investigated by x-ray diffractometer (XRD), Fourier-transform infrared spectroscopy, x-ray photoelectron spectroscopy (XPS), and photoluminescence measurements, respectively. The XPS and XRD results indicated that Li+ and Cu2+ incorporation into NiOx structure was successfully achieved and the crystallite size decreased owing to Li+ and Cu2+ addition. The particles were excited at 362 nm and exhibited a peak at 550 nm as a maximum emission peak with bi-exponential decay curves. With the Li+ and Cu2+ incorporation into the structure, both emission-based intensity and average decay time values decreased. [ABSTRACT FROM AUTHOR]- Published
- 2023
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