Triphenylamine substituted copper and zinc phthalocyanines as alternative hole-transporting materials for solution-processed perovskite solar cells

Gizem Gümüşgöz Çelik, Ayşe Nur Şahin, Ferruh Lafzi, Nurullah Saracoglu, Ahmet Altındal*, Ayşe Gül Gürek*, Devrim Atilla*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

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 languageEnglish
Pages (from-to)9385-9396
Number of pages12
JournalDalton Transactions
Volume51
Issue number24
DOIs
Publication statusPublished - 8 Jun 2022
Externally publishedYes

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).

FundersFunder number
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu118Z736

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