Despite the demonstrated high power conversion efficiency (PCE) of perovskite solar cells (PVSC), long-term stability of the device operated in humid environments under photo- and thermal stresses is still a serious concern prior to any commercialization. To provide possible solutions to overcome this hurdle, we have synthesized an n-type conjugated molecule, c-HATNA, that can be crosslinked as an electron-transporting layer (ETL) on top of the desired perovskites. By proper doping to increase its electron-transporting property, a high PCE of 18.21% can be obtained with respectable moisture and thermal stability without encapsulation. Moreover, this c-HATNA ETL can be used in conjunction with another crosslinkable hole-transporting layer, c-TCTA-BVP, to fabricate all-crosslinked charge-transporting layers (CTLs) for PVSCs and achieve 16.08% and 13.42% PCEs on rigid and flexible substrates, respectively. More importantly, the device with all-crosslinked CTLs showed impressive thermal stability in ambient environment: almost 70% of its initial PCE after being heated at 70°C for 300 hr.

尽管已证明钙钛矿太阳能电池（PVSC）的高功率转换效率（PCE），但是在任何商业化之前，在潮湿环境中在光和热应力下运行的设备的长期稳定性仍然是一个严重的问题。为了提供克服这一障碍的可能解决方案，我们合成了一种n型共轭分子c- HATNA，该分子可以作为电子传输层（ETL）交联在所需的钙钛矿上。通过适当地掺杂以增加其电子传输性能，可以在不封装的情况下获得18.21％的高PCE，且具有相当高的水分和热稳定性。此外，该c -HATNA ETL可以与另一个可交联的空穴传输层c-TCTA-BVP，用于制造用于PVSC的全交联电荷传输层（CTL），并在刚性和柔性基板上分别实现16.08％和13.42％的PCE。更重要的是，具有全交联CTL的器件在周围环境中显示出令人印象深刻的热稳定性：在70°C加热300小时后其初始PCE的近70％。