首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Synthesis of size controllable and thermally stable rice-like brookite titania and its application as a scattering layer for nano-sized titania film-based dye-sensitized solar cells
【24h】

Synthesis of size controllable and thermally stable rice-like brookite titania and its application as a scattering layer for nano-sized titania film-based dye-sensitized solar cells

机译:尺寸可控且热稳定的米状板钛矿二氧化钛的合成及其作为纳米二氧化钛薄膜染料敏化太阳能电池散射层的应用

获取原文
获取原文并翻译 | 示例
获取外文期刊封面目录资料

摘要

Size controllable and thermally stable rice-like brookite TiO2 particles with high phase purity were synthesized through a hydrothermal process. By varying the reaction conditions, the average diameter (brachyaxis) of the rice-like brookite TiO2 particles can be tuned over a wide range from ca. 200 nm to 1200 nm. Moreover, the brookite phase can be maintained, even with calcination at a temperature up to 800 °C, and a brookite-to-anatase phase transition and then to rutile can be observed upon further enhancing the calcination temperature from 850 °C to 1000 °C. The obtained brookite TiO2 submicrometer particles were used as a light scattering overlayer on a nano-sized TiO2 (P25) film-based photoanode to fabricate bilayer TiO2 film-based dye-sensitized solar cells (DSSCs). It is found that the brookite TiO2 scattering layers can improve the performances of the P25 film-based solar cells to different extents by enhancing the light-harvesting capability, and the optimal diameter of the rice-like brookite TiO2 particles as a scattering layer material is determined to be ~600 nm, its corresponding solar cell gives an overall conversion efficiency up to 7.57%, with a ~33% improvement in the efficiency as compared to that (5.70%) of the individual P25 film-based one under standard AM 1.5G 1 sun irradiation. The above results on the brookite TiO2 particles represent a clear advance towards efficient light scattering materials for the nanosized TiO2 film-based solar cells.
机译:通过水热法合成了具有高相纯度的尺寸可控且热稳定的米状板钛矿型TiO2颗粒。通过改变反应条件,米状板钛矿TiO2颗粒的平均直径(短轴)可以在大约1200到190的范围内调节。 200 nm至1200 nm。此外,即使在高达800°C的温度下煅烧,也可以保持板钛矿相,并且将煅烧温度从850°C进一步提高到1000°C时,可以观察到板钛矿到锐钛矿的相变,然后变成金红石。 C。将获得的板钛矿TiO 2亚微米颗粒用作纳米尺寸的基于TiO 2(P25)膜的光阳极上的光散射覆盖层,以制造双层的基于TiO 2膜的染料敏化太阳能电池(DSSC)。发现板钛矿TiO 2散射层通过增强光收集能力可以在不同程度上提高P25膜基太阳能电池的性能,并且作为散射层材料的米状板钛矿TiO 2颗粒的最佳直径为相对于标准AM 1.5下基于P25的单个薄膜电池(5.70%)的效率(5.70%),其对应的太阳能电池(确定为〜600 nm)的整体转换效率高达7.57%,效率提高了〜33%。 G 1阳光照射。在板钛矿TiO 2颗粒上的上述结果代表了用于基于纳米尺寸的TiO 2膜的太阳能电池的有效光散射材料的明显进步。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号