A new thermal-stable truxene-based hole-transporting material for perovskite solar cells

作者：Wang, Jiang; Chen, Yu^*; Liang, Mao; Ge, Gaoyang; Zhou, Renjie; Sun, Zhe; Xue, Song

来源：Dyes and Pigments, 2016, 125: 399-406.

DOI：10.1016/j.dyepig.2015.11.004

• Truxene
• Hole-transporting material
• Perovskite solar cells
• Thermal-stable
• Carbon counter electrode
• Photovoltaic

Developing effective hole-transporting material is critical to achieve high efficiency CH3NH3PbI3 perovskite solar cells. A new thermal-stable truxene-based material, 2,7,12-tri(N,N-di(4-methoxyphenyl) amino)-5,5 ',10,10 ',15,15 '-hexapropyltr-uxene, has been synthesized by a facile route. A reference compound, 1,3,5-tris(di-p-anisylamino)benzene, was prepared as well. Their optical, electronic properties, thermal stability and photovoltaic performances were investigated. This new truxene-based material exhibits a high decomposition temperature (432 degrees C), a high glass transition temperature (134 degrees C), and a suitable highest occupied molecular orbital level well-matched with the valence band of CH3NH3PbI3. The device based on this new material in conjunction with a carbon counter electrode achieves a power conversion efficiency of 3.18% under the illumination of 100 mW cm(-2), which is better than that of the reference compound (0.93%). These results indicate truxene core is a promising building block for holetransporting material.

• 出版日期2016-2
• 单位天津大学; 天津理工大学