研究目的
Investigating the spectroscopic and electrical properties of hybrid thin films based on P3HT polymers and CIS NCs for their application in BHJ solar cells.
研究成果
The study demonstrates that P3HT/CIS NCs blends can be used in BHJ solar cells, with the best performance achieved at 75wt% CIS NCs loading. Ligand exchange processes, particularly with pyridine and BDT, improve charge transfer properties and solar cell performance. However, the PCE remains low, suggesting the need for further optimization of materials and processes.
研究不足
The study is limited by the insulating nature of long-chain organic ligands on CIS NCs, which impedes efficient charge transport. The ligand exchange processes partially address this but do not completely eliminate the issue. Additionally, the performance of the solar cells is relatively low, indicating room for optimization in materials and processes.
1：Experimental Design and Method Selection:
The study focuses on the fabrication and characterization of BHJ solar cells using P3HT and CIS NCs. The methodology includes the synthesis of CIS NCs, ligand exchange processes, and the fabrication of solar cell devices.
2：Sample Selection and Data Sources:
CIS NCs were synthesized using a hot injection method. The study uses various concentrations of CIS NCs in P3HT blends for device fabrication.
3：List of Experimental Equipment and Materials:
Equipment includes TGA/DSC, FTIR spectroscopy, TEM, UV-Vis spectroscopy, PL and PIA spectroscopy. Materials include P3HT, CIS NCs, various ligands (1-DDT, OLAM, TOPO, hexanethiol, pyridine, BDT), and solvents.
4：Experimental Procedures and Operational Workflow:
The workflow involves the synthesis of CIS NCs, ligand exchange, fabrication of solar cell devices, and their characterization using spectroscopic and electrical measurements.
5：Data Analysis Methods:
Data analysis includes fitting JeV curves with space charge limited current models, analyzing PL and PIA spectra, and evaluating solar cell performance parameters.
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