研究目的
To investigate the performance of thin, inkjet-printed TiO2/fullerene composites as electron transport materials in planar perovskite solar cells.
研究成果
The study demonstrated that inkjet-printed TiO2/fullerene composite films annealed at 400°C can serve as efficient electron transport layers for planar perovskite solar cells, offering a simplified fabrication process with a lower thermal budget compared to traditional methods.
研究不足
The study focused on the optimization of annealing temperature for inkjet-printed TiO2/fullerene composite films. The performance of the solar cells was evaluated under ambient conditions, and the long-term stability of the devices was not addressed.
1：Experimental Design and Method Selection:
The study utilized inkjet-printing to deposit TiO2/fullerene composite films as electron transport layers for perovskite solar cells. The inks were formulated with TiO2 nanoparticles, molecular precursors, and fullerene additives in organic solvents.
2：Sample Selection and Data Sources:
The inks were printed on fluorine-doped tin oxide (FTO) substrates. The performance of the solar cells was evaluated based on the annealing temperature of the TiO2 films.
3：List of Experimental Equipment and Materials:
A Dimatix DMP-2850 inkjet printer was used for printing. The TiO2 paste was supplied by H-glass. Other materials included anisole, tetralin, and fullerene derivatives (C60 and PCBM).
4：Experimental Procedures and Operational Workflow:
The inks were printed and annealed at various temperatures (300°C, 400°C, 500°C). The perovskite and Spiro-OMeTAD layers were deposited by spin-coating, followed by thermal evaporation of a gold contact.
5：Data Analysis Methods:
The photovoltaic performance was analyzed using a VeraSol LED solar simulator and a Keithley 2400 source/meter. Ultraviolet Photoelectron Spectroscopy (UPS) was used to characterize the energy levels of the films.
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