Data from: Enhancing halide ion homogeneity in blade-coated wide-bandgap perovskite for perovskite-organic tandem solar cells
Data files
Mar 24, 2026 version files 3.58 MB
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Data_file.xlsx
3.58 MB
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README.md
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Abstract
The shared processing technologies of perovskite and organic semiconductors make them ideal partners for constructing perovskite-organic tandem solar cells. However, the different crystallization rates of bromide and iodide ions lead to inhomogeneous vertical halide distribution within wide-bandgap (WBG) perovskite films, causing significant open-circuit voltage (VOC) loss. In this study, we developed an approach to blade-coat halide-compositionally homogeneous WBG perovskite films by introducing a hydrogen-bonding donor solvent (formamide). The formamide effectively modulates crystallization kinetics via balancing the differential hydrogen-bonding interactions of formamide with bromide and iodide ions. The resultant WBG perovskite solar cells achieved a power conversion efficiency of 18.9 % with an exceptional VOC of 1.41 V. Finally, a perovskite-organic tandem solar cell was fabricated, achieving a high efficiency of 26.3 % (certified as 25.6 %) and retaining 92 % of its initial efficiency after being illuminated for 1,000 hours. This work provides an approach for the large-area fabrication of halide-compositionally homogeneous WBG perovskite films, paving the way for the industrialization of tandem devices.
Data file for manuscript "Enhancing Halide Ion Homogeneity in Blade-coated Wide-Bandgap Perovskite for Perovskite-Organic Tandem Solar Cells"
Dataset DOI: 10.5061/dryad.w3r228166
Description of the data and file structure
File: Data_file.xlsx
This data file includes all the main raw data for the manuscript "Enhancing Halide Ion Homogeneity in Blade-coated Wide-Bandgap Perovskite for Perovskite-Organic Tandem Solar Cells."
The data file contains sheets 1 to 13.
Overview of all the sheets and figures
- Sheet 1 and Figure 1G
- Content: Depth-dependent PL spectra of the control wide-bandgap perovskite films.
- The "--" shown in Figure 1G of the depth-dependent PL spectrum is due to the fact that the detection device failed to record accurate results at the wavelength range of 840 nm–935 nm, which does not affect the experimental conclusion.
- PL: Photoluminescence
- Sheet 2 and Figure 2A
- Content: AN value of different coordination solvents of DMSO, FM, FA, and TA.
- AN: Acceptor number
- DMSO: Dimethyl sulfoxide
- FM: Formamide
- FA: Formic acid
- TA: Trifluoroacetic acid
- Sheet 3 and Figure 2E
- Content: XRD spectra of wide-bandgap perovskite films prepared with DMSO, FM/DMSO, FA/DMSO, and TA/DMSO-based perovskite precursors after annealing.
- XRD: X-ray diffraction
- Sheet 4 and Figure 3E
- Content: Depth-dependent PL spectra of FM-based wide-bandgap perovskite film.
- PL: Photoluminescence
- Sheet 5 and Figure 3F
- Content: GIWAXS analysis of wide-bandgap perovskite crystal prepared by FM-based perovskite precursors after annealing
- Giwaxs: Two-dimensional grazing-incidence wide-angle X-ray scattering
- d: Lattice d-spacing
- Å: Ångstrom
- Sheet 6 and Figure 4A
- Content: FTIR spectra of FM solvent, FM∙Br- and FM∙I- compounds.
- FTIR: Fourier transform infrared
- Br- : Bromide ions
- I-: Iodide ions
- Sheet 7 and Figure 5A
- Content: J-V curves of the wide-bandgap PSCs fabricated with varying ratios of added FM solvent in the perovskite precursors.
- JV: Current density-voltage
- PSC: Perovskite solar cell
- Sheet 8 and Figure 5B
- Content: Dependence of VOC on light intensity of control and FM-based wide-bandgap PSCs.
- VOC: Open voltage
- Sheet 9 and Figure 5C
- Content: TPV decay of control and FM-based wide-bandgap PSCs.
- TPV: Transient Photovoltage decay.
- Sheet 10 and Figure 5F
- Content: J-V curves of WBG and organic single-junction solar cells and their tandem device measured under AM1.5G illumination.
- Sheet 11 and Figure 5G
- Content: Statistical PCE distribution of the TSCs from 64 samples.
- PCE: Power conversion efficiency
- TSCs: Tandem solar cells
- Sheet 12 and Figure 5H
- Content: EQE spectra of the perovskite-organic TSC
- EQE: External quantum efficiency
- Sheet 13 and Figure 5I
- Content: Long-term photostability of the perovskite-organic TSC measured under 1-sun intensity illumination from a full-spectrum LED lamp in ambient conditions with a relative humidity of 30-40 %.
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