摘要
由于钙钛矿薄膜形貌较差，空穴提取受到抑制，限制了pedot:pss空穴传输层(HTL)的钙钛矿太阳电池(PSCs)的性能本文采用poly-tpd对PSC中pedot:pss薄膜进行表面改性。疏水性poly-tpd的存在降低了成核中心，得到了晶粒较大的钙钛矿薄膜。在poly-tpd存在下改进的能级排列导致从钙钛矿层到HTL的空穴提取增强。改进的形貌和电荷提取提高了光伏性能。poly-tpd的掺入使PSCs的功率转换效率(PCE)从13.6%提高到16.1%。此外，由于疏水性聚-tpd的存在和较少的晶界数量，PSCs的货架期也有了明显的改善。66天后，Poly-TPD的PSC保持其初始PCE的96%，而控制装置的PCE下降到其初始值的72%。
Abstract
Inferior morphology of perovskite films and suppressed hole extraction restricts the performance of perovskite solar cells (PSCs) with a PEDOT:PSS hole transporting layer (HTL). In this work, poly-TPD is used to modify the surface of PEDOT:PSS films in PSC. The presence of hydrophobic poly-TPD decreases the nucleation sites, and as a result, perovskite films with larger grains are obtained. Improved energy level alignment in the presence of poly-TPD results in enhanced hole extraction from the perovskite layer to the HTL. The improved morphology and charge extraction resulted in improved photovoltaic performance. The power conversion efficiency (PCE) of PSCs was increased from 13.6% to 16.1% with the incorporation of poly-TPD. Also, the shelf life of the PSCs has exhibited considerable improvement due to the presence of hydrophobic poly-TPD and fewer number of grain boundaries. After 66 days, the PSC with poly-TPD maintained 96% of its initial PCE, whereas the PCE of the control device degraded to 72% of its initial value.
NETL
NSTL