Herein propose a high performance dye sensitized solar cell based terbium (Tb) doped barium titanate (BaTiO₃) thin films prepared by three different techniques such as chemical bath deposition method (CBD), screen printing (SP) and spray pyrolysis coating (SPC) techniques respectively. XRD, SEM and HRTEM results suggest that tetragonal phase of BaTiO₃ with three different morphologies like spherical, nanosheets and nanofibers for CBD, SP and SPC assisted Tb:BTO thin films, respectively. Enhancing the visible light absorption, narrowing the band gap energy and prevent the recombination process of electron-hole pair of SPC assisted Tb:BTO thin films were also examined by UV and PL spectra analysis. Moreover, the SPC assisted Tb:BTO thin films show high surface area (102.5 m²/g) and specific porous nature (14.7 nm), studied by N₂ adsorption-desorption analysis. Sandwich type DSSC was fabricated and studied the current-voltage characteristic of all the Tb:BTO thin film photoanode samples. The device utilizing in the SPC assisted Tb:BTO thin film photoanode produced the highest photo-conversion efficiency (η) of 15.15% than compared with CBD assisted Tb:BTO (6.57%) and SP assisted Tb:BTO (8.67%). This is due to highest porosity, surface area, lowest leak current and charge transfer resistance Rct of Tb:BTO photoanode. The improved mechanism of the proposed work is also discussed in detail.

本文提出了一种通过三种不同的技术（如化学浴沉积法（CBD），丝网印刷（SP）和喷雾热解涂层（SPC））制备的高性能染料敏化太阳能电池基b（Tb）掺杂钛酸钡（BaTiO ₃）薄膜。技术。XRD，SEM和HRTEM结果表明，BaTiO _3的四方相分别具有球形，纳米片和纳米纤维三种形态，分别用于CBD，SP和SPC辅助的Tb：BTO薄膜。还通过UV和PL光谱分析检查了SPC辅助的Tb：BTO薄膜的电子-空穴对对的增强，增加了可见光吸收，缩小了带隙能量并防止了复合过程。此外，SPC辅助的Tb：BTO薄膜显示出高表面积（102.5 m² / g）和特定的多孔性（14.7 nm），通过N ₂吸附-解吸分析进行研究。制作了三明治型DSSC，并研究了所有Tb：BTO薄膜光电阳极样品的电流-电压特性。与CBD辅助Tb：BTO（6.57％）和SP辅助Tb：BTO（8.67％）相比，在SPC辅助Tb：BTO薄膜光电阳极中使用的器件产生的光转换效率（η）最高，为15.15％。这是由于Tb：BTO光电阳极的最高孔隙率，表面积，最低泄漏电流和电荷转移电阻Rct所致。还详细讨论了提出的工作的改进机制。