研究目的
To further improve the power conversion efficiency (PCE) of binary organic solar cells (OSCs) via composition control by adding a narrow-bandgap donor PCE10 as the mediator into the PBDB-T:IDTT-T binary blend system.
研究成果
The addition of PCE10 as a narrow-bandgap mediator into the PBDB-T:IDTT-T binary blend system significantly enhances the photovoltaic performance of ternary solar cells, achieving a champion PCE of 10.73% with a high VOC of 1.03 V. The study demonstrates that ternary systems with properly aligned energy levels and overlapping absorption amongst components can further improve the performance of corresponding binary systems.
研究不足
The study focuses on a specific binary system (PBDB-T:IDTT-T) and the role of PCE10 as the third component. The generalizability of the findings to other ternary systems may require further investigation. Additionally, the study does not explore the long-term stability and scalability of the ternary solar cells.
1：Experimental Design and Method Selection:
Ternary blend solar cells were fabricated by adding PCE10 into the PBDB-T:IDTT-T binary blend system. The methodology involved studying the effect of the third component on the photophysical processes, film morphology, and photo-electric conversion process.
2：Sample Selection and Data Sources:
The samples included thin films of PBDB-T, IDTT-T, and PCE10, and their ternary blends. Data was collected through absorption spectra, photoluminescence (PL) spectroscopic studies, and device performance measurements.
3：List of Experimental Equipment and Materials:
Instruments used included transmission electron microscopy (TEM) for morphology studies, grazing incidence wide angle X-ray scattering (GIWAXS) for crystallinity analysis, and space charge limited current (SCLC) method for carrier transport property investigation.
4：Experimental Procedures and Operational Workflow:
The process involved fabricating OSCs devices based on an inverted structure of ITO/sol-gel ZnO/active materials/MoO3/Al, measuring current density-voltage (J-V) curves under one standard sun illumination, and analyzing external quantum efficiency (EQE) spectra.
5：Data Analysis Methods:
Data analysis included calculating the saturation photocurrent density (Jsat) and charge separation probabilities P(E,T), and determining the maximum exciton generation rate (Gmax).
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
