研究目的
Investigating the effects of incorporating a glancing angle deposited donor layer on the performance of small molecule organic solar cells.
研究成果
The incorporation of a glancing angle deposited donor layer between the BHJ and C60 layer in organic solar cells leads to higher efficiency by improving open-circuit voltage and fill factor. This work demonstrates a novel approach to enhance device performance without additional materials.
研究不足
The study is limited by the challenges in determining the exact thickness of the GLAD deposited ClAlPc layer and the potential tradeoff between charge carrier generation power and achievable open circuit voltage in BHJ organic solar cells.
1：Experimental Design and Method Selection:
The study involves the fabrication of a new device structure for organic solar cells without employing extra material, using glancing angle deposition for the donor material layer.
2：Sample Selection and Data Sources:
Cleaned indium tin oxide (ITO) glasses are used as substrates. Materials include ClAlPc, C60, and BCP.
3：List of Experimental Equipment and Materials:
A commercial vacuum deposition system (ULVAC-KIKO VWR-400M/ERH), sunlight simulator (Newport Oriel 91160), UV-Vis-NIR spectrophotometer (Cary 5000), and atomic force microscope (AFM, DI NanoScope).
4：Experimental Procedures and Operational Workflow:
Organic materials are deposited onto ITO substrates successively under vacuum. The thickness and deposition rate are monitored in situ. The devices are illuminated and their current-voltage (I-V) curves are measured.
5：Data Analysis Methods:
The performance parameters of the photovoltaic devices, such as open-circuit voltage and fill factor, are analyzed from the I-V curves.
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