2Dハイブリッドペロブスカイト(BA)₂ (MA)₂Pb₃l₁₀におけるキャリアの自己捕捉と動的ラシュバ分裂について

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Updated: Feb 26, 2026

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity

Published on: March 6, 2017

Weiyan Qi¹, Stefano Ponzoni¹, Guénolé Huitric¹

¹Laboratoire des Solides Irradiés, CEA/DRF/lRAMIS, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France.

Small (Weinheim an der Bergstrasse, Germany)

|February 25, 2026

Abstract:

Time- and Angle-Resolved Photoelectron Spectroscopy (tr-ARPES) is employed to monitor photoexcited electrons in the 2D hybrid perovskite (BA) $_{2}$ (MA) $_{2} Pb$ $_{2}$ $_{10}$ . Photoelectron intensity maps are in good agreement with ab-initio calculations of the band structure. The effective mass is $_{3} I$ and $0.12 \pm 0.02 m_{0}$ for holes and electrons, respectively. In the photoexcited state, spin-orbit splitting of the conduction band cannot be resolved. This sets the upper bound of photoinduced Rashba coupling to $α_{C} < 2.5$ eVÅ. The correlated electron-hole plasma evolves in Wannier excitons with Bohr radius of 2.8 nm, while no sign of self-trapping in small polarons is found within the investigated time window of up to 120 ps following photoexcitation.

キーワード:

2Dペロブスカイトラシュババンド構造励起子自己捕捉

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Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

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