[18a-A41-1~11] 12.5 有機・ハイブリッド太陽電池

11:30 〜 11:45英語発表

[18a-A41-10] Plasmonic Behavior of Silver Nanoparticle Embedded in TiO₂ Layer of MAPbI₃ Solar

〇(DC)Joseph Baki Kaore¹, Sachiko Jonai¹, Akira Baba¹, Kazunari Shinbo¹, Keizo Kato¹ (1.Niigata University)

キーワード：

Plasmonics

In this study a two-dimensional finite difference time domain (2D-FDTD) simulation was performed to study the localized surface plasmon resonance (LSPR) behavior of a silver nanoparticle (AgNP) embedded in the titanium dioxide layer (TiO₂) of a standard perovskite solar cell structure having methylammonium lead iodide (MAPbI₃) as the active layer. The simulation seems to reveal the near-field orientation of the LSPR excitation at shorter wavelengths along the direction of the incident optical light as can be seen in fig.1 a) and b). The polarization-orientation of the near-fields at shorter wavelength seem to couple well and extend into the ITO and as such may not be beneficial for effective charge carrier extraction from the MAPbI₃ layer towards the TiO₂ layer. However, as the wavelengths shift towards longer wavelengths, the near-fields of the LSPR result in a polarization-orientation parallel to the TiO₂ layer with a dipole resonance as can be observed in fig. 1 c) and d). Although there is sufficient extension of the near-fields into the MAPbI₃ active layer at longer wavelengths, the absorption range of the MAPbI₃ usually recedes at such wavelengths with not enough charge carrier generations for injection into the TiO₂ layer. And, as such this system may not be suitable for plasmonic utilization of AgNPs.