Abstract
In the present study, new peripheral substituted Zn(ii) and Cu(ii) phthalocyanine derivatives (p-ZnPc and p-CuPc) bearing bulky aromatic triphenylamine groups were synthesized as alternative hole-transporting materials (HTMs). The structures of the new phthalocyanine derivatives (p-ZnPc and p-CuPc) were illuminated by various spectroscopic techniques such as mass spectrometry and 1H, and 13C-NMR. After structural analysis, their photophysical properties in solution and the solid phase were examined by UV-Vis absorption and fluorescence spectroscopy. Using p-ZnPc and p-CuPc as HTMs, highly stable perovskite-based solar cells with the structure of FTO/SnO2/perovskite/p-ZnPc and p-CuPc/Ag have been developed and characterized. It was observed that our devices with p-ZnPc as the HTM maintain over 93% of the initial performance for more than 960 h under atmospheric conditions (22-27 °C) with 35-45% relative humidity. In addition, some strategies such as using various methylammonium iodide (MAI) and lead iodide (PbI2) blend ratios between 1 : 0.4 and 1 : 1.8 were employed to test the effect of the blend ratios on the long term stability of the perovskite-based solar cells. Our findings demonstrated that the spin-coated p-ZnPc based HTM demonstrated competitive power conversion efficiency and exhibited superior stability without encapsulation compared to commonly used HTMs.
Original language | English |
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Pages (from-to) | 9385-9396 |
Number of pages | 12 |
Journal | Dalton Transactions |
Volume | 51 |
Issue number | 24 |
DOIs | |
Publication status | Published - 8 Jun 2022 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2022 The Royal Society of Chemistry.
Funding
We thank The Scientific and Technological Research Council of Turkey (TUBITAK) for financial support (project no: 118Z736).
Funders | Funder number |
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Türkiye Bilimsel ve Teknolojik Araştırma Kurumu | 118Z736 |