TOP-HTM-α2: A Hole-transporting Material Enhancing the Conversion Efficiency and Stability of Perovskite Solar Cells

TOP-HTM-α2 is being developed as a hole transport material (HTM) for perovskite solar cells (PSCs).¹⁾ When TOP-HTM-α2 is incorporated into perovskite solar cells with a MAPbI₃ perovskite layer, comparable conversion efficiency to devices using Spiro-OMeTAD, a well-known HTM, have been achieved. Notably, additive-free TOP-HTM-α2 demonstrates high conversion efficiency similar to its additive-containing counterparts in contrast to the Spiro-OMeTAD-based devices, and achieves a good operational stability higher than additive-containing Spiro-OMeTAD devices. In addition, additive-containing TOP-HTM-α2 has recently shown high conversion efficiency in devices using a triple cation perovskite layer. Particularly, when a low-boiling-point solvent dichloromethane is used in spin-coating, TOP-HTM-α2 exhibits a remarkable conversion efficiency of 20.18%, which is higher than 18.85% achieved by Spiro-OMeTAD-based devices. This result is indicated to be related to its more uniform film surfaces.²⁾ Additionally, high conversion efficiency and its stability are reported in additive-free TOP-HTM-α2 devices using FAPbI₃ as a perovskite layer.³⁾ These results highlight the potential of TOP-HTM-α2 as a HTM in various perovskite solar cell devices and is expected to contribute to research and industrialization of perovskite solar cells.

Related Products

T3722

TOP-HTM-α2

T3672

Spiro-OMeTAD

B5672

TOP-HTM-α1

Related Product Category Pages

• Perovskite Solar Cell (PSC) Materials

References

• 1) Additive-free, Cost-Effective Hole-Transporting Materials for Perovskite Solar Cells Based on Vinyl Triarylamines
  • H. Nishimura, I. Okada, T. Tanabe, T. Nakamura, R. Murdey, A. Wakamiya, ACS Appl. Mater. Interfaces 2020, 12, 32994.
• 2) An Alternative to Chlorobenzene as a Hole Transport Materials Solvent for High-Performance Perovskite Solar Cells
  • S. H. Lee, S. B. Lim, J. Y. Kim, S. Lee, S. Y. Oh, G. M. Kim, Crystals 2023, 13, 1667.
• 3) Experimental investigation of additive free-low-cost vinyl triarylamines based hole transport material for FAPbI₃-based perovskite solar cells to enhance efficiency and stability
  • A. Kumar, S. Singh, M. K. A. Mohammed, D. S. Ahmed, Mater. Res. Express 2023, 10, 044003.

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