Polyiodide solid-state dye-sensitized solar cell produced from a standard liquid I−/I3− electrolyte

Ellie Tanaka; Neil Robertson

doi:10.1039/D0TA07377F

Polyiodide solid-state dye-sensitized solar cell produced from a standard liquid I−/I3− electrolyte

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Abstract

Solid-state dye-sensitized solar cells were obtained by drying a standard I−/I3− liquid-electrolyte cell in ambient conditions. Slow evaporation of the organic solvent allows the formation of a polyiodide (In−, n ≥ 3) network that bridges the counter electrode and dye/TiO2 layer. The unsealed polyiodide solar cell (Ply-I DSSC) with 5T dye reaches a maximum of 5.2% peak power conversion efficiency (peak PCE), similar to the precursor liquid-state solar cell (Liq-I DSSC) of maximum PCE = 5.7%. Once the performance of the Ply-I DSSCs reaches a stabilization (stb.) point (maximum stb. PCE 5.0%), no loss in performance is displayed under dark storage in ambient air without any encapsulation for a period of around 10 months.

Original language	English
Pages (from-to)	19991-19999
Journal	Journal of Materials Chemistry A: materials for energy and sustainability
Volume	8
Issue number	38
Early online date	15 Sep 2020
DOIs	https://doi.org/10.1039/D0TA07377F
Publication status	E-pub ahead of print - 15 Sep 2020

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title = "Polyiodide solid-state dye-sensitized solar cell produced from a standard liquid I−/I3− electrolyte",

abstract = "Solid-state dye-sensitized solar cells were obtained by drying a standard I−/I3− liquid-electrolyte cell in ambient conditions. Slow evaporation of the organic solvent allows the formation of a polyiodide (In−, n ≥ 3) network that bridges the counter electrode and dye/TiO2 layer. The unsealed polyiodide solar cell (Ply-I DSSC) with 5T dye reaches a maximum of 5.2% peak power conversion efficiency (peak PCE), similar to the precursor liquid-state solar cell (Liq-I DSSC) of maximum PCE = 5.7%. Once the performance of the Ply-I DSSCs reaches a stabilization (stb.) point (maximum stb. PCE 5.0%), no loss in performance is displayed under dark storage in ambient air without any encapsulation for a period of around 10 months.",

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AB - Solid-state dye-sensitized solar cells were obtained by drying a standard I−/I3− liquid-electrolyte cell in ambient conditions. Slow evaporation of the organic solvent allows the formation of a polyiodide (In−, n ≥ 3) network that bridges the counter electrode and dye/TiO2 layer. The unsealed polyiodide solar cell (Ply-I DSSC) with 5T dye reaches a maximum of 5.2% peak power conversion efficiency (peak PCE), similar to the precursor liquid-state solar cell (Liq-I DSSC) of maximum PCE = 5.7%. Once the performance of the Ply-I DSSCs reaches a stabilization (stb.) point (maximum stb. PCE 5.0%), no loss in performance is displayed under dark storage in ambient air without any encapsulation for a period of around 10 months.

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