研究目的
Investigating the effect of introducing an iridium complex as an aggregation reshaping auxiliary on the efficiency of thick bulk heterojunction polymer solar cells.
研究成果
The introduction of (tfmppy)2Ir(tpip) as an aggregation reshaping auxiliary significantly improves the efficiency of thick bulk heterojunction polymer solar cells by enhancing exciton dissociation and charge transport. A 5 wt% ratio of the iridium complex was found to be optimal, leading to a 20.3% enhancement in power conversion efficiency.
研究不足
The study focuses on a specific polymer blend and iridium complex, which may limit the generalizability of the findings to other materials. The optimization of the iridium complex ratio is crucial, as excessive amounts can lead to decreased performance.
1：Experimental Design and Method Selection:
The study introduced a novel iridium complex into the active layer of polymer solar cells to control the morphology of the bulk heterojunction.
2：Sample Selection and Data Sources:
The active layer consisted of PffBT4T-2OD: PC71BM blends with varying ratios of (tfmppy)2Ir(tpip).
3：List of Experimental Equipment and Materials:
Instruments included AFM for morphology characterization, XRD for crystallinity analysis, and UV-Vis absorption spectra measurements.
4：Experimental Procedures and Operational Workflow:
The iridium complex was mixed into the polymer blend, spin-coated onto substrates, and annealed before device fabrication.
5：Data Analysis Methods:
The performance of the solar cells was evaluated through J-V curves, EQE spectra, and impedance spectroscopy.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
