Issue 24, 2023

Fluorinated- and non-fluorinated-diarylamine-Zn(ii) and Cu(ii) phthalocyanines as symmetrical vs. asymmetrical hole selective materials

Abstract

Four symmetrically substituted and four asymmetrically substituted fluorinated and non-fluorinated-diarylamine CuPcs and ZnPcs have been designed and utilized as hole transporting materials in perovskite solar cells in a planar n–i–p structure. We established the correlation between the electronic structure, charge mobility parameters, core metal, and substituents in metal phthalocyanines. The fluorinated asymmetrically substituted undoped ZnPc-6 yielded the best power conversion efficiency of 15.40% with an open-circuit voltage (Voc) of 1016.1 mV, a short-circuit current density (Jsc) of 21.27 mA cm−2, and a fill factor (FF) of 71.25%, followed by the non-fluorinated asymmetrically substituted ZnPc-5 with 14.36%. In the case of symmetrical CuPcs, the best performance was measured using non-fluorinated CuPc-3 and fluorinated CuPc-4 gave 11.53% and 10.90% of PCEs, respectively. Importantly, the devices with MPcs showed improved stability under multi-stress conditions.

Graphical abstract: Fluorinated- and non-fluorinated-diarylamine-Zn(ii) and Cu(ii) phthalocyanines as symmetrical vs. asymmetrical hole selective materials

Supplementary files

Article information

Article type
Paper
Submitted
20 1 2023
Accepted
25 3 2023
First published
29 3 2023

J. Mater. Chem. C, 2023,11, 8243-8253

Fluorinated- and non-fluorinated-diarylamine-Zn(II) and Cu(II) phthalocyanines as symmetrical vs. asymmetrical hole selective materials

A. Hernández, N. H. Hemasiri, S. Kazim, J. Ortiz, S. Ahmad and Á. Sastre-Santos, J. Mater. Chem. C, 2023, 11, 8243 DOI: 10.1039/D3TC00254C

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