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Developing SrZnO2 with p-type conductivity by sequential La doping
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DOI：10.1007/s10854-026-18275-9.png)
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Abstract
En 中文
Achieving p-type conductivity in strontium zincates (SrZnO2) is particularly challenging due to the confined nature of the O 2p-derived valence band, which hinders the introduction of shallow acceptors and results in large hole effective masses. In this study, La $$^{3+}$$ was selected as a potential dopant to induce p-type conductivity. Bulk powder samples of La-doped SrZnO2 (La $$_x$$ Sr $$_{1-x}$$ ZnO2, $${x = 0, 0.03, 0.07}$$ ) were synthesized and systematically characterized. X-ray diffraction confirmed that the samples predominantly crystallized in the orthorhombic SrZnO2 phase, with a minor SrCO $$_3$$ secondary phase identified by Rietveld refinement, while Raman spectroscopy provided insights into the vibrational properties. X-ray photoelectron spectroscopy revealed oxygen-related defects and surface chemical states. Hall-effect measurements demonstrated enhanced conductivity with an increase in the La content, supporting the introduction of p-type behavior with La doping. Diffuse reflectance spectroscopy showed bandgap energies in the range of 3.22–3.19 eV, confirming visible-range transparency. These findings highlight the potential of La-doped SrZnO2 as a promising p-type transparent conducting oxide candidate for optoelectronic applications.
Journal
J
IF:
2.8
Papers:
354
Citations:
0