Conformational control of morphology for perylene diimide dimer as electron transporting material at perovskite surface
作者:Aysun Albayrak Ötken、Gözde Murat Saltan、Tamer Yeşil、Ceylan Zafer、Haluk Dinçalp
DOI:10.1016/j.jphotochem.2023.114705
日期:2023.7
substituted positions of PDI monomers to thiophene linkage from its (2,5)-, (3,4)-, (2,4)-, or (2,3)-positions in modulating the morphology of PDI dimer, aggregation behavior for charge transfer properties, optical shifts in ground and excited states, and recombination resistances at the interfaces of p-i-n devices. Conformational changes of PDI dimers attaching to different positions of thiophene linkers
研究了与噻吩连接体 ( PDI-NHR-Th(1 – 4) ) 连接的核扭曲苝二酰亚胺 (PDI) 二聚体的合成及其在钙钛矿表面的电子传输能力。合成染料的高位最低未占分子轨道 (LUMO) 能级介于 –3.68 和 –3.71 eV 之间,与 CH 3 NH 3 PbI 2的导带兼容Br (–3.60 eV)。在此,我们研究了 PDI 单体的不同取代位置从其 (2,5)-、(3,4)-、(2,4)- 或 (2,3)- 位置到噻吩键的作用调制 PDI 二聚体的形态、电荷转移特性的聚集行为、基态和激发态的光学位移以及 pin 器件界面处的复合电阻。发现附着在噻吩接头不同位置的 PDI 二聚体的构象变化不仅会影响染料激发态的光物理动力学,还会影响钙钛矿界面处的电荷传输动力学,从而改变光伏性能。