宽带隙钙钛矿材料和器件稳定性研究数据
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该子数据集包括不同组分混合卤素宽带隙钙钛矿薄膜材料在光照、湿度、加热等条件下的稳定性研究；工作条件下电荷输运和复合与电池稳定性的关系，研究发现在基于光稳定混合卤素宽禁带钙钛矿中加入偶极MA阳离子会修复深阱缺陷，可以减少陷阱引起的非辐射复合；研究钙钛矿电池的光、热加速老化行为，以及加负载在全天候太阳光辐射条件下的性能变化，结合体相和界面钝化策略优化出混合卤素宽带隙钙钛矿电池连续光照1000小时钙钛矿电池效率衰退低于5%(初始效率>18%，面积≥0.5cm2)；利用路易斯碱等添加剂来钝化宽带隙全无机钙钛矿缺陷，提升全无机钙钛矿薄膜的耐湿性和耐热性，进一步提高器件的稳定性；对于宽带隙二维钙钛矿材料，采用添加剂表面钝化方法调节钙钛矿的重结晶过程，有效改善了器件的环境稳定性和光稳定性指出了研究钙钛矿材料在水氧环境下结晶性的变化规律。
This sub-dataset covers stability studies of mixed-halide wide-bandgap perovskite thin films with different compositions under conditions such as illumination, humidity, and heating. It also investigates the correlation between charge transport, recombination under operating conditions and battery stability. The studies found that introducing dipolar MA cations into light-stable mixed-halide wide-bandgap perovskites can repair deep trap defects, thereby reducing trap-induced non-radiative recombination. Additionally, researches are conducted on the photo- and thermal-accelerated aging behavior of perovskite solar cells, as well as performance changes under load during all-day solar irradiation. By combining bulk and interface passivation strategies, mixed-halide wide-bandgap perovskite solar cells were optimized, exhibiting efficiency degradation of less than 5% after 1000 hours of continuous illumination (initial efficiency > 18%, active area ≥ 0.5 cm²). Furthermore, the dataset includes studies on using Lewis base and other additives to passivate defects in wide-bandgap all-inorganic perovskites, enhancing the moisture and heat resistance of all-inorganic perovskite thin films and further improving device stability. For wide-bandgap two-dimensional perovskite materials, additive-based surface passivation was adopted to regulate the recrystallization process of perovskites, effectively improving the environmental and photostability of devices, and elucidating the variation rules of crystallinity of perovskite materials in water-oxygen environments.
