A New 1,3,4-Oxadiazole-Based Hole-Transport Material for Efficient CH3NH3PbBr3 Perovskite Solar Cells
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 CH3NH3PbBr3 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).
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Carli, S., Baena, J. P. C., Marianetti, G., Marchetti, N., Lessi, M., Abate, A., Caramori, S., Graetzel, M., Bellina, F., Bignozzi, C. A., & Hagfeldt, A. (2016). A New 1,3,4-Oxadiazole-Based Hole-Transport Material for Efficient CH3NH3PbBr3 Perovskite Solar Cells. Chemsuschem, 9(7), 657–661. https://doi.org/10.1002/cssc.201501665
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WOS:000374156200001
2016
9
7
657
661
REVIEWED
EPFL