PTAA-based hole transport layer (HTL) for perovskite solar cells

• Develop a novel PTAA -based hole transport layer (HTL ) for perovskite solar cells, incorporating a high-quality electron blocking layer (EBL) material to significantly enhance power conversion efficiency (PCE ).

  
  

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• Novel PTAA Derivative: Explore modifications to the PTAA structure (e.g., side chain engineering, polymer architecture) to optimize its hole-transporting properties and compatibility with the perovskite layer.

  High-Quality EBL: Identify an EBL material with excellent electron-blocking capabilities, minimizing charge recombination and improving device efficiency.

  Interface Engineering: Investigate strategies to optimize the interfacial properties between the PTAA-based HTL, EBL, and perovskite layer, reducing energy barriers and enhancing charge transfer.

  Characterization and Optimization: Employ advanced characterization techniques (e.g., UV-Vis spectroscopy, cyclic voltammetry, impedance spectroscopy) to evaluate the performance of the developed HTL and EBL materials and optimize device fabrication parameters.

  The goal is to create a PTAA-based HTL and EBL combination that significantly boosts the PCE of perovskite solar cells , paving the way for more efficient and sustainable energy solutions.

  
  

• Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine (PTAA), CAS number 1333317-99-9, one of the family members of poly(triaryl)amine, is an excellent hole-transporting and electron-blocking semiconducting material due to its electron-rich components. It is a popular choice for perovskite solar cell devices, due to its:

  > Easy processibility

  > Good hole transport and electron blocking qualities

  > High thermal stability

  > Use in both regular and inverted devices

• Literature and Reviews

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  1. Efficient inorganic–organic hybrid heterojunction solar cells containing perovskite compound and polymeric hole conductors, J. Heo et al., Nat. Photonics 7, 486–491 (2013) doi:10.1038/nphoton.2013.80.
  2. Compositional engineering of perovskite materials for high-performance solar cells, N. Jeon et al., Nature 517, 476–480 (2015), doi:10.1038/nature14133.
  3. High-performance photovoltaic perovskite layers fabricated through intramolecular exchange, W-S. Yang et al., Science, 348 (6240), 1234-1237 (2015). DOI: 10.1126/science.aaa9272.

  4. High-efficient solid-state perovskite solar cells without lithium salt in the hole transport material, NANO 09, 1440001 (2014). DOI: 10.1142/S1793292014400013.
  5. Chemical Management for Colorful, Efficient, and Stable Inorganic−Organic Hybrid Nanostructured Solar Cells, J. Noh et al., Nano Lett., 13, 1764−1769 (2013), dx.doi.org/10.1021/nl400349b.
  6. Achieving a stable time response in polymeric radiation sensors under charge injection by X-rays, A. Intaniwet et al., ACS Appl Mater Interfaces. 2(6), 1692-9 (2010). doi: 10.1021/am100220y.
  7. Enhanced Charge Separation in Ternary P3HT/PCBM/CuInS2 Nanocrystals Hybrid Solar Cells, A. Lefrançois et al., Sci Rep. 2015; 5: 7768. doi: 10.1038/srep07768.
  8. Dopant-Free Spiro-Triphenylamine/Fluorene as Hole-Transporting Material for Perovskite Solar Cells with Enhanced Efficiency and Stability, Y. Wang et al., Adv. Funct. Mater., 26, 1375–1381 (2016); DOI: 10.1002/adfm.201504245.
  9. Multiply charged conjugated polyelectrolytes as a multifunctional interlayer for efficient and scalable perovskite solar cellsJung, E.D. et al. Advanced Materials, 32(30). (2020). doi: 10.1002/adma.202002333.
  10. Li, Z. et al. (2022b) 'Organometallic-functionalized interfaces for highly efficient inverted perovskite solar cells,' Science, 376(6591), pp. 416–420. https://doi.org/10.1126/science.abm8566.