Laboratory for Microstructures and Research Center of Nanoscience and Nanotechnology , Shanghai University , 99 Shangda Road , Shanghai 200444 , China.
School of Medical Instrument and Food Engineering , University of Shanghai for Science and Technology , Shanghai 200093 , China.
ACS Appl Mater Interfaces. 2018 May 9;10(18):15697-15703. doi: 10.1021/acsami.8b01737. Epub 2018 Apr 26.
The transmittance and conductivity of fluorine-doped tin oxide (FTO) conductive glasses are the critical factors limiting the performance of dye-sensitized solar cells (DSSCs). Here, the transmittance and conductivity of commercial FTO glasses were improved via a colloid-solution deposition planarization (CSDP) process. The process includes two steps. First, the FTO nanocrystal colloid was deposited on the FTO glasses by spin-coating. Secondly, the coated glasses were treated by FTO precursor solution. Compared to the bare FTO glasses, the modified FTO glasses by the CSDP process achieved 4% increase in transmittance (at 550 nm) and 11% decrease in sheet resistance, respectively. In addition, the modified FTO glasses can reduce the aggregation of Pt nanoparticles and improve the electrocatalytic activity of Pt counter electrodes. When the modified FTO glasses were used to assemble DSSCs, the cells got a photoelectric conversion efficiency as high as 9.37%. In contrast, the efficiency of reference cells using bare FTO substrates was about 8.24%.
掺氟氧化锡（FTO）导电玻璃的透光率和电导率是限制染料敏化太阳能电池（DSSC）性能的关键因素。在这里，通过胶体溶液沉积平坦化（CSDP）工艺提高了商业 FTO 玻璃的透光率和电导率。该工艺包括两个步骤。首先，通过旋涂将 FTO 纳米晶胶体沉积在 FTO 玻璃上。其次，用 FTO 前体溶液处理涂覆的玻璃。与裸 FTO 玻璃相比，通过 CSDP 工艺处理的 FTO 玻璃的透光率（在 550nm 处）提高了 4%，方阻降低了 11%。此外，修饰后的 FTO 玻璃可以减少 Pt 纳米颗粒的聚集并提高 Pt 对电极的电催化活性。当使用修饰后的 FTO 玻璃组装 DSSC 时，电池的光电转换效率高达 9.37%。相比之下，使用裸 FTO 基底的参考电池的效率约为 8.24%。
