Efficient photocathodes made of polymorph monoclinic and orthorhombic CuNb₂O₆ thin films was prepared by PLD technique (248 nm, 5 Hz, 525 mJ/cm², (30 °C, 100 °C, 200 °C, 400 °C, 600 °C). Desired phase formation was confirmed from XRD peak corresponding to ($\bar{1}$31) and (131) (d = 2.975 Å and d = 2.919 Å) of m-CuNb₂O₆ and (311) (d = 2.939 Å) of o-CuNb₂O₆ plane. Morphological analysis exposes transformation of cubic into truncated cubes in m-CuNb₂O₆ and polyhedron to spherical particles in m-CuNb₂O₆ thin films. Using CuNb₂O₆, p-DSSC was fabricated (CNO/N719/$I^{-}$/$I_3^{-}$/Pt) and their efficiency was tested. Photovoltaic cell exhibited device performance of m-CuNb₂O₆ (0.24%) and o-CuNb₂O₆ (0.22%). Higher photovoltaic performance of o-CuNb₂O₆ (600 °C) photocathode DSSC arises due to various factors like dense, continuous surface with well-connected morphology, higher dye loading, NIR light harnessing capability and higher photoconversion efficiency. PLD deposited CuNb₂O₆ provides a new insight in the DSSCs application.

通过PLD技术（248 nm，5 Hz，525 mJ / cm ²，（30°C，100°C，200°C，400°C，600，600），由多晶型单斜晶和正交晶体CuNb ₂ O ₆薄膜制成的高效光电阴极从XRD峰确认了所需的相形成，该峰对应于（$\stackrel{〜}{\mathrm{1个}}$31）和（131）（d = 2.975Å和d = 2.919Å）的m-CuNb ₂ O ₆平面和（311）（d = 2.939Å）的o-CuNb ₂ O ₆平面。形态分析揭示了m-CuNb ₂ O ₆中立方晶向截短的立方和多面体的转变为m-CuNb ₂ O ₆薄膜中的球形。使用CuNb ₂ O ₆制备了p-DSSC（CNO / N719 /${\mathrm{一世}}^{-}$/${\mathrm{一世}}_3^{-}$/ Pt）及其效率进行了测试。光伏电池表现出m-CuNb ₂ O ₆（0.24％）和o-CuNb ₂ O ₆（0.22％）的器件性能。o-CuNb ₂ O ₆（600°C）光电阴极DSSC具有更高的光伏性能，这是由于多种因素引起的，例如致密，连续的表面和形态良好的连接，更高的染料载量，近红外光利用能力和更高的光转换效率。PLD沉积的CuNb ₂ O ₆提供了DSSCs应用的新见解。