Electronic and Structural Effects in Porphyrin Metal-Organic Framework Sensitizers for Solid-State Dye-Sensitized Solar Cells.

Authors

Tommy Taing, Jesus Corona, Sailaja Muduganti, Xiyuan Yao, Matthew J Tang, Doroteo Manriquez, Crystal Xiong, Oscar O Bernal, Lun An, Long Qi, Dianlu Jiang, Yangyang Liu

Published in

Chemphyschem : a European journal of chemical physics and physical chemistry. Volume 27. Issue 14. Pages e70508. Jul 29, 2026.

Abstract

Porphyrin metal-organic frameworks (PMOFs) offer structurally ordered and compositionally tunable platforms for sensitized photovoltaics. Titanium- and indium-based PMOFs, together with a tin-doped indium analog, were investigated as photosensitizers in solid-state dye-sensitized solar cells (ssDSSCs). Electrochemical and optical measurements confirmed favorable energy-level alignment with the TiO₂ conduction band and the hole-transporting material, supporting charge injection and transport. Distinct crystallite morphologies between Ti- and In-based PMOFs govern interfacial geometry and recombination pathways within the mesoporous TiO₂ scaffold. In contrast, the enhanced performance of In-PMOF(Sn) relative to In-PMOF is attributed primarily to dopant-induced modifications in redox behavior and interfacial charge-transfer kinetics rather than substantial shifts in frontier orbital energies. Although overall efficiencies remain modest, these findings establish clear structure-kinetics-performance relationships and demonstrate that node chemistry and dopant incorporation provide complementary strategies for tuning interfacial charge-transfer dynamics in PMOF-sensitized ssDSSCs.

PMID:
42525966
Bibliographic data and abstract were imported from PubMed on 30 Jul 2026.

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