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 |
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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 | |
Publication status | E-pub ahead of print - 15 Sep 2020 |