研究目的
Investigating the effects of alkyl side-chain engineering on the molecular self-organization of small molecules and its application in high-performance organic and perovskite solar cells.
研究成果
The study demonstrates that alkyl side-chain engineering can effectively control the molecular self-organization of small molecules, leading to improved performance in OPVs and PvSCs. SM2, with an additional hexyl side-chain, showed superior device performance and stability compared to SM1, highlighting the potential of molecular design strategies in advancing organic and hybrid electronics.
研究不足
The study focuses on the impact of alkyl side-chain engineering on molecular self-organization and device performance but does not explore the scalability of the synthesis process or the long-term stability of devices under operational conditions beyond heat and humidity tests.
1：Experimental Design and Method Selection:
The study involved the synthesis of small molecules with different alkyl side-chains (SM1 and SM2) and their application in OPVs and PvSCs. The methodology included UV-vis absorption spectroscopy, cyclic voltammetry (CV), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and density functional theory (DFT) calculations.
2：Sample Selection and Data Sources:
The samples were SM1 and SM2 small molecules. Data sources included optical, electrochemical, and thermal properties measurements.
3：List of Experimental Equipment and Materials:
Equipment used included UV-vis spectrophotometer, CV setup, TGA, DSC, and DFT computational tools. Materials included SM1 and SM2 small molecules, PC71BM, and various solvents for film processing.
4：Experimental Procedures and Operational Workflow:
The workflow involved synthesis of small molecules, characterization of their properties, fabrication of OPVs and PvSCs, and evaluation of device performance under various conditions.
5：Data Analysis Methods:
Data analysis included comparison of optical, electrochemical, and thermal properties, device performance metrics (VOC, JSC, FF, PCE), and morphological analysis via AFM, TEM, POM, and GIWAXS.
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