N-doped TiO2 applied in low-temperature-based dye-sensitized solar cells

作者：Chen, Yuanyuan; Zhang, Bao^*; Feng, Yaqing^*

来源：Research on Chemical Intermediates, 2016, 42(8): 6705-6718.

DOI：10.1007/s11164-016-2491-1

• N-doped TiO2 powders
• Low-temperature
• Dye-sensitized solar cells
• Doctor-blade
• Photoelectric conversion efficiency

With urea as nitrogen source, N-doped TiO2 powders were synthesized and fabricated for low-temperature dye-sensitized solar cells (DSSCs) by the method of doctor-blade, and the highest temperature of the whole process was 120 degrees C. SEM, TEM, XRD, DRS, and XPS were used to analyze the microstructure of the N-doped TiO2 powders. EIS, Bode plot, UV-Vis and I-V were employed to measure the photovoltaic performance of the DSSCs. The maximum photoelectric conversion efficiency (eta) was 5.18 % when the amount of the doped nitrogen was 4 %, and, when compared with the eta of 4.22 % for pure TiO2, the short circuit current was increased by 22.2 % and the efficiency was increased by 22.7 %. It has been shown that the doped nitrogen could effectively suppress TiO2 crystal phase transition from anatase to rutile, and decrease the size of particles. Therefore, the increased photoelectric conversion efficiency of the N-doped TiO2-based DSSC was ascribed to the more suitable crystal phase, sizes and inner structure.

• 出版日期2016-8
• 单位天津大学