Beijing Key Laboratory of Novel Thin-Film Solar Cells, North China Electric Power University , Beijing 102206, P. R. China.
NAAM Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia.
ACS Appl Mater Interfaces. 2017 Sep 20;9(37):32026-32033. doi: 10.1021/acsami.7b07321. Epub 2017 Sep 5.
In this article, hierarchical TiO microstructures (HM-TiO) were synthesized by a simple solvothermal method adopting tetra-n-butyl titanate as the titanium source in a mixed solvent composed of N,N-dimethylformamide and acetic acid. Due to the high crystallinity and superior light-scattering ability, the resultant HM-TiO are advantageous as photoanodes for dye-sensitized solar cells. When assembled to the entire photovoltaic device with C101 dye as a sensitizer, the pure HM-TiO-based solar cells showed an ultrahigh photovoltage up to 0.853 V. Finally, by employing the as-obtained HM-TiO as the scattering layer and optimizing the architecture of dye-sensitized solar cells, both higher photovoltage and incident photon-to-electron conversion efficiency value were harvested with respect to TiO nanoparticles-based dye-sensitized solar cells, resulting in a high power conversion efficiency of 9.79%. This work provides a promising strategy to develop photoanode materials with outstanding photoelectric conversion performance.
在本文中，采用正丁醇钛作为钛源，在 N,N-二甲基甲酰胺和乙酸组成的混合溶剂中，通过简单的溶剂热法合成了分级 TiO 微结构（HM-TiO）。由于具有高结晶度和优异的光散射能力，所得的 HM-TiO 有利于作为染料敏化太阳能电池的光阳极。当与 C101 染料作为敏化剂组装成全光伏器件时，纯 HM-TiO 基太阳能电池表现出高达 0.853 V 的超高光电压。最后，通过将所获得的 HM-TiO 用作散射层并优化染料敏化太阳能电池的结构，相对于基于 TiO 纳米粒子的染料敏化太阳能电池，获得了更高的光电压和入射光子到电子的转换效率值，从而实现了 9.79%的高功率转换效率。这项工作为开发具有出色光电转换性能的光阳极材料提供了一种有前途的策略。
