研究目的
Investigating the effects of adding a third component (Eh-IDTBR) to the active layer of ternary organic solar cells (OSCs) on energetic disorder, charge transfer state energy, and activation energy, besides morphological changes.
研究成果
The addition of Eh-IDTBR as a third component in ternary OSCs improved the crystallinity of the acceptor phase, reduced energetic disorder, and lowered the activation energy for charge carrier generation. These changes led to enhanced device performance, including higher VOC and JSC. The study provides insights into the structural-electrical property correlations in ternary OSCs, offering a pathway for further optimization of device performance.
研究不足
The study is limited to the specific materials system of PCE10, F8IC, and Eh-IDTBR. The findings may not be directly applicable to other material systems. Additionally, the study focuses on a narrow range of compositions for the ternary blend, potentially overlooking optimal compositions outside this range.
1：Experimental Design and Method Selection:
The study focused on ternary OSCs with PCE10 as the donor, F8IC as the acceptor, and Eh-IDTBR as the third component. The methodology included GIWAXS measurements for crystalline properties, temperature-dependent mobility measurements for energetic disorder, and photocurrent density measurements for activation energy.
2：Sample Selection and Data Sources:
Samples included neat films of Eh-IDTBR, F8IC, and PCE10, and their binary/ternary blend films. Data were acquired through device performance measurements and material characterization techniques.
3：List of Experimental Equipment and Materials:
Equipment included GIWAXS for crystalline properties, J-V characteristics under simulated AM 1.5G solar illumination, and EQE spectra measurements. Materials included PCE10, F8IC, and Eh-IDTBR.
4：5G solar illumination, and EQE spectra measurements. Materials included PCE10, F8IC, and Eh-IDTBR.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The process involved fabricating OSCs with varying compositions of Eh-IDTBR, measuring device performance, and analyzing morphological and electronic properties.
5：Data Analysis Methods:
Data were analyzed using Gaussian disorder model for energetic disorder, Arrhenius equation for activation energy, and Scherrer equation for coherence lengths from GIWAXS data.
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