The supporting information provides detailed experimental data and analysis for a study on the enhancement of photoinduced charge transport in dye-sensitized solar cells (DSSCs) using two-dimensional graphene. The key points include: 1. **XRD Patterns**: - Graphite has a peak at 2θ= 26.6°, indicating a d-spacing of 3.34 Å. - Graphene oxide (GO) shows a new peak at 2θ= 12.1°, corresponding to a d-spacing of 7.30 Å, indicating exfoliation and formation of pristine GO. - Reduced GO has a decreased basal spacing to 3.56 Å, confirming the formation of graphene. 2. **XPS Data**: - GO has four types of carbon bonds: C-C, C-O, C=O, and O-C=O. - Electrode 2 has similar C 1s species but weaker oxide species. - Reduction of GO results in a decrease in oxygen content, with a weight loss of about 25%. - Graphene loses an additional 7% weight after calcination at 450 °C in air. 3. **FT-IR Spectrum**: - GO confirms successful oxidation with characteristic peaks for O-H stretching, C=O, and C-O. - Graphene confirms reduction of GO with decreased O-H, C-O, and C=O peaks, and a new absorption band at 1550 cm^-1. 4. **UV-vis Transmittance**: - Electrode CNT has the highest transmittance among the different electrodes. These results collectively support the enhanced photoinduced charge transport in DSSCs due to the use of two-dimensional graphene.The supporting information provides detailed experimental data and analysis for a study on the enhancement of photoinduced charge transport in dye-sensitized solar cells (DSSCs) using two-dimensional graphene. The key points include: 1. **XRD Patterns**: - Graphite has a peak at 2θ= 26.6°, indicating a d-spacing of 3.34 Å. - Graphene oxide (GO) shows a new peak at 2θ= 12.1°, corresponding to a d-spacing of 7.30 Å, indicating exfoliation and formation of pristine GO. - Reduced GO has a decreased basal spacing to 3.56 Å, confirming the formation of graphene. 2. **XPS Data**: - GO has four types of carbon bonds: C-C, C-O, C=O, and O-C=O. - Electrode 2 has similar C 1s species but weaker oxide species. - Reduction of GO results in a decrease in oxygen content, with a weight loss of about 25%. - Graphene loses an additional 7% weight after calcination at 450 °C in air. 3. **FT-IR Spectrum**: - GO confirms successful oxidation with characteristic peaks for O-H stretching, C=O, and C-O. - Graphene confirms reduction of GO with decreased O-H, C-O, and C=O peaks, and a new absorption band at 1550 cm^-1. 4. **UV-vis Transmittance**: - Electrode CNT has the highest transmittance among the different electrodes. These results collectively support the enhanced photoinduced charge transport in DSSCs due to the use of two-dimensional graphene.