Carli Stefano, Baena Juan Pablo Correa, Marianetti Giulia, Marchetti Nicola, Lessi Marco, Abate Antonio, Caramori Stefano, Grätzel Michael, Bellina Fabio, Bignozzi Carlo Alberto, Hagfeldt Anders
Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara 17, 44121, Ferrara, Italy.
Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Station 6, 1015, Lausanne, Switzerland.
ChemSusChem. 2016 Apr 7;9(7):657-61. doi: 10.1002/cssc.201501665. Epub 2016 Feb 16.
A new hole-transport material (HTM) based on the 1,3,4-oxadiazole moiety (H1) was prepared through a single-step synthetic pathway starting from commercially available products. Thanks to a deep HOMO level, H1 was used as HTM in CH3 NH3 PbBr3 perovskite solar cells yielding an efficiency of 5.8%. The reference HTM (Spiro-OMeTAD), under the same testing conditions, furnished a lower efficiency of 5.1%. Steady-state and time-resolved photoluminescence of the thin films showed good charge-extraction dynamics for H1 devices. In addition, H1 shows a large thermal stability and completely amorphous behavior (as evaluated by thermal gravimetric analysis and differential scanning calorimetry).
一种基于1,3,4-恶二唑部分（H1）的新型空穴传输材料通过从市售产品开始的单步合成途径制备。由于其较深的最高占据分子轨道（HOMO）能级，H1被用作CH3NH3PbBr3钙钛矿太阳能电池中的空穴传输材料，效率达到5.8%。在相同测试条件下，参比空穴传输材料（Spiro-OMeTAD）的效率较低，为5.1%。薄膜的稳态和时间分辨光致发光表明H1器件具有良好的电荷提取动力学。此外，H1表现出较大的热稳定性和完全非晶态行为（通过热重分析和差示扫描量热法评估）。
