研究目的
Investigating the use of a tetrathiafulvalene derivative with amide hydrogen bonds as a dopant-free hole transport material for perovskite solar cells.
研究成果
Bis-amide-TTF forms electroactive self-assembled nanofibers through intermolecular hydrogen bonding, exhibiting higher conductivity than doped spiro-OMeTAD. When used as a hole transport material in perovskite solar cells, it achieves a power conversion efficiency of 14.5%, comparable to that of doped spiro-OMeTAD, offering a new strategy for designing supramolecular HTMs.
研究不足
The study is limited by the lower short-circuit current density (Jsc) observed in Bis-amide-TTF-based devices compared to spiro-OMeTAD-based devices, which may be due to less efficient hole extraction.
1：Experimental Design and Method Selection:
The study involved the synthesis of Bis-amide-TTF and its application as a hole transport material in perovskite solar cells. The electrical conductivity and hole mobility of Bis-amide-TTF films were compared with those of spiro-OMeTAD films.
2：Sample Selection and Data Sources:
Bis-amide-TTF was synthesized following previously reported methods. Perovskite solar cells were fabricated using Bis-amide-TTF and spiro-OMeTAD as hole transport materials.
3：List of Experimental Equipment and Materials:
Equipment included a spin-coater, UV–vis spectrometer, UPS spectrometer, FE-SEM, AFM, and ellipsometer. Materials included Bis-amide-TTF, spiro-OMeTAD, and perovskite precursors.
4：Experimental Procedures and Operational Workflow:
Bis-amide-TTF was spin-coated onto perovskite layers. The morphology, optical properties, and electrical characteristics of the films were analyzed.
5：Data Analysis Methods:
Conductivity and hole mobility were calculated from J-V measurements. The performance of the solar cells was evaluated based on PCE, Jsc, Voc, and FF.
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