Potassium-doped Li₃VO₄ sample is synthesized by conventional Solid-state reaction technique. X-ray Diffraction results show polycrystalline behaviour of K-doped Li₃VO₄. It was also observed that Li⁺ did not show its presence in the diffraction pattern which explains that K⁺ ions are well substituted in the interstitials and did not disturb the planes of Li₃VO₄ matrix. Presence of K⁺ in Li₃VO₄ matrix is also confirmed in the molecular fingerprint (Fourier Transform Infrared) spectroscopy. Optical absorption study (UV-Visible) shows that the materials perform absorbance in UV region only and remain transparent for visible region. With increase in the K⁺-doping concentration, the absorbance peaks shift slightly towards higher wavelength, suggesting enhancement in the particle size. Furthermore, the emission spectroscopy studies (Photoluminescence) show increase in the emission intensity towards blue region of visible spectrum. From electrical conductivity study it is found that the materials exhibit supersonic phase above 800 K with predominantly ionic conductivity in the range of 91.954 to 6.1 Ω⁻¹m⁻¹. The ionic conductivity and transparency prompts the feasibility of designing transparent battery with high UV shielding property.

中文翻译：

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在K +掺杂的Li3VO4纳米结构超离子导体中观察到紫外线屏蔽和透明度

采用常规固相反应技术合成了钾掺杂的Li ₃ VO ₄样品。X射线衍射结果显示出K掺杂的Li ₃ VO _4的多晶行为。还观察到，Li ⁺在衍射图中没有显示出它的存在，这说明K ⁺离子在间隙中被很好地取代，并且没有干扰Li ₃ VO ₄基质的平面。Li ₃ VO _4中存在K ⁺分子指纹（傅里叶变换红外）光谱中也证实了基质。光学吸收研究（UV-Visible）表明，该材料仅在UV区域内执行吸收，并且对于可见光区域保持透明。随着K ⁺掺杂浓度的增加，吸光度峰向较高波长稍有偏移，表明粒径增加。此外，发射光谱学研究（光致发光）表明发射强度向可见光谱的蓝色区域增加。从电导率研究中发现，材料在800 K以上具有超音速相，主要的离子电导率范围为91.954至6.1Ω ^-1 m ^-1。离子导电性和透明性提示设计具有高紫外线屏蔽性能的透明电池的可行性。