用于高效平面异质结钙钛矿太阳能电池的无退火水法制备锐钛矿TiO致密层。
An annealing-free aqueous-processed anatase TiO compact layer for efficient planar heterojunction perovskite solar cells.
作者信息
Yang Chengwu, Yu Mingyu, Chen Dichun, Zhou Yaqing, Wang Wei, Li Yang, Lee Tung-Chun, Yun Daqin
机构信息
College of Energy, Xiamen University, Xiamen 361002, China.
出版信息
Chem Commun (Camb). 2017 Oct 3;53(79):10882-10885. doi: 10.1039/c7cc01104k.
A facile aqueous-based fabrication scheme is developed for producing annealing-free anatase TiO (AF-TiO) films that exhibit efficient electron transport properties in planar heterojunction perovskite solar cells (PSCs). AF-TiO films are fabricated by spin coating on a substrate a colloidal solution of anatase TiO nanoparticles (NPs) prepared via a low temperature hydrolytic sol-gel method. The resultant AF-TiO films show low electrical resistance, high transmittance in the visible and near-infrared regions and facilitation of high-quality perovskite film formation, which can be attributed to their homogeneous surface morphology and nanocrystallinity. The AF-TiO based PSCs achieve a power conversion efficiency (PCE) of 18.29 ± 0.18%, showing significant improvement compared to the control PSCs (PCE = 11.33 ± 0.32%) based on TiO films made by high-temperature annealing of amorphous TiO (HTA-TiO).
开发了一种简便的水基制备方案，用于生产在平面异质结钙钛矿太阳能电池（PSC）中表现出高效电子传输特性的无退火锐钛矿TiO（AF-TiO）薄膜。通过旋涂法将经低温水解溶胶-凝胶法制备的锐钛矿TiO纳米颗粒（NP）的胶体溶液涂覆在基板上，从而制备出AF-TiO薄膜。所得的AF-TiO薄膜显示出低电阻、在可见光和近红外区域具有高透射率，并且有利于高质量钙钛矿薄膜的形成，这可归因于其均匀的表面形态和纳米结晶度。基于AF-TiO的PSC实现了18.29±0.18%的功率转换效率（PCE），与基于通过非晶TiO高温退火（HTA-TiO）制成的TiO薄膜的对照PSC（PCE = 11.33±0.32%）相比有显著提高。
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