Here, a simple deposition process is developed to fabricate dye-sensitized solar cells (DSSCs) covering a titanium dioxide (TiO2) compact layer successfully produced by either soaking into a blue titania solution or by spin coating method. The components of photoanode of the devices were sintered at 500 °C with/without employing a preheating treatment. The effects of the method to obtain the compact layer and preheating treatment on the optical and electrical properties of the devices were examined by means of UV-Vis spectroscopy, current-voltage measurement, and electrochemical impedance spectroscopy. The results suggested that these experimental conditions have a vital role in determining photoelectric conversion performance of the devices. Accordingly, considerably improved power conversion efficiency of 4.54% was found in case of employing a compact layer soaked into the solution and preheated, which is exceptionally greater than that of the power conversion efficiency of 0.35% of the device having a spin-coated compact layer and continuous coating of the mesoporous layer without preheating. A significant increase in the efficiency has been accomplished due to the improved electron lifetime. These results demonstrated the critical importance of deposition conditions to evolve the performance of DSSCs.

中文翻译：

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优化蓝色 TiO2 DSSC 的沉积参数


这里，开发了一种简单的沉积工艺来制造覆盖二氧化钛（TiO2）致密层的染料敏化太阳能电池（DSSC），该致密层通过浸泡在蓝色二氧化钛溶液中或通过旋涂方法成功生产。器件的光电阳极组件在 500°C 下烧结，无论是否采用预热处理。通过紫外-可见光谱、电流-电压测量和电化学阻抗谱等手段考察了致密层的获得方法和预热处理对器件光学和电学性能的影响。结果表明，这些实验条件对于确定器件的光电转换性能起着至关重要的作用。因此，在采用浸入溶液中并预热的致密层的情况下，发现显着提高了4.54%的功率转换效率，这明显高于具有旋涂致密层的器件的0.35%的功率转换效率。无需预热即可连续涂覆介孔层。由于电子寿命的延长，效率显着提高。这些结果证明了沉积条件对于提高 DSSC 性能至关重要。