Abstract In this study, Ta5+ doped Cs0.33WO3 with the excellent near-infrared shielding and transparent thermal performance is successfully prepared via a simple one-pot hydrothermal route. The synthetic procedure and optical response of the obtained samples are systematically investigated by various analytical instruments and the mechanism of doping Ta5+ into Cs0.33WO3 is studied in this work. The results indicate a significant improvement in the optical property after the doping. The carrier concentration and free-electrons increase because of the lattice distortion. Further more when the ratio x of Ta/(Ta + W) = 0.05, the as-prepared Cs0.33Ta0.05W0.95O3 exhibits improved visible light transparency of 85.91% and the near-infrared shielding ability of 80.60%. This improvement could be attributed to the maximum carrier concentration and free electrons in Cs0.33Ta0.05W0.95O3.

中文翻译：

---

Cs0.33TaxW1-xO3提高光学性能的机制

摘要 本研究通过简单的一锅水热法成功制备了具有优异近红外屏蔽和透明热性能的Ta5+掺杂Cs0.33WO3。本工作通过各种分析仪器系统地研究了所得样品的合成过程和光学响应，并研究了 Ta5+ 掺杂到 Cs0.33WO3 中的机理。结果表明掺杂后光学性能有显着改善。由于晶格畸变，载流子浓度和自由电子增加。此外，当 Ta/(Ta + W) 的比值 x = 0.05 时，所制备的 Cs0.33Ta0.05W0.95O3 的可见光透明度提高了 85.91%，近红外屏蔽能力提高了 80.60%。