Perovskite solar cells employing copper (Ⅰ/II) porphyrin hole-transport material with enhanced performance

• Published in: Inorganic chemistry communications Vol. 112; p. 107701
• Main Authors: Si, Chang-Dai, Lv, Xu-Dong, Long, Shi-Jia
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2020
• Subjects: Copper porphyrin; Hole transport material; Perovskite solar cells; Hole transport material; Copper porphyrin; Perovskite solar cells
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2019.107701

An acylhydrazone-based copper porphyrin derivative was utilized as HTM to prepare PSC. Due to the redox shuttle of copper (I/II) for efficient charge transport by copper center metal together with the efficient electronic passivation by acylhydrazone groups, the best efficiency was readily improved up to 18.2%. The corresponding PSC device also revealed improved thermal stability. [Display omitted] •An acylhydrazone-based copper porphyrin was used as HTM to prepare PSC.•The redox shuttle of copper (I/II) for efficient charge transport.•The corresponding PSC device revealed improved thermal stability. Perovskite solar cells, the commonly used hole transport materials (HTMs), Spiro-OMeTAD, are considered to be responsible for its long-term instability at high temperature. Herein,it isimperative to design an efficient and stable acylhydrazone-based copper porphyrins CuP as HTMs. Benefiting from the redox shuttle process of copper ion(I/II) in CuP, the performances of corresponding PSCs devices based on CuP as HTM were almost consistent with those of PSCs with Spiro-OMeTAD as HTM. More importantly, compared with the common Spiro-OMeTAD-based devices, the thermal stability of CuP-based devices was improved greatly. This work indicates that the employment of CuP as HTM can achieve the fabrication of efficient and stable PSCs.