Maintaining persistent thin-film morphology under certain thermal stress is desirable for durable operation of multi-layer organic optoelectronic devices. We herein report a thioxanthenothioxanthene-centered hole-transporter (N³,N³,N⁹,N⁹-tetrakis(4-methoxyphenyl)thioxantheno[2,1,9,8-klmna]thioxanthene-3,9-diamine, TXTX-OMeDPA) characteristic of two-dimensional molecular stacking in a single crystal. TXTX-OMeDPA can be solution-processed into smooth thin films with suitable energy level and good hole mobility, allowing for the fabrication of perovskite solar cells with an impressive power conversion efficiency of 22.2% when measured under illumination of AM 1.5G sunlight. The remarkable morphological stability of TXTX-OMeDPA-based thin film ensures good stability for perovskite solar cells not only stored at 60 °C in the dark but also operated under equivalent full sunlight at 60 °C.

中文翻译：

---

基于硫氧杂蒽硫杂蒽酮的具有2D分子堆叠的空穴传输剂，可高效稳定地钙钛矿型太阳能电池。

对于多层有机光电器件的持久操作而言，在一定的热应力下保持持久的薄膜形态是理想的。我们在此报告了以噻吨并以噻吨并噻吨为中心的空穴传输剂（N ³，N ³，N ⁹，N ^9-四（4-甲氧基苯基）噻吨并[ 2,1,9,8-单分子中二维分子堆叠的特征]] thioxanthene-3,9-diamine，TXTX-OMeDPA）。TXTX-OMeDPA可以固溶处理成具有合适能级和良好空穴迁移率的光滑薄膜，从而允许制造钙钛矿型太阳能电池，当在AM 1.5G阳光下测量时，其功率转换效率高达22.2％。基于TXTX-OMeDPA的薄膜具有卓越的形态学稳定性，从而确保了钙钛矿型太阳能电池的良好稳定性，该钙钛矿型太阳能电池不仅可以在黑暗中60°C下储存，而且可以在60°C的完全阳光下工作。