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 yan 2023
Accepted
25 mar 2023
First published
29 mar 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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