[19p-D903-1~15] 12.2 Characterization and Materials Physics

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)

[19p-D903-1] Angle-resolved low-energy inverse photoelectron spectroscopy apparatus

Yuki Kashimotgo¹, Satoshi Ideta¹, Haruki Sato¹, Hibiki Orio¹, Keita Kawamura¹, Daichi Honma¹, 〇Hiroyuki Yoshida^1,2 (1.Chiba Univ., 2.Chiba Univ. MCRC)

Keywords:

energy band structure,conduction band,organic semiconductor

The energy band structure of the conduction band (energy-momentum relation of electrons) is crucial to understanding the electron transport of crystalline materials. In this presentation, we describe an angle-resolved low-energy inverse photoelectron spectroscopy (AR-LEIPS) apparatus that examines the conduction band structures of materials sensitive to the electron beam, such as organic semiconductors and organic-inorganic hybrid perovskites. The principle of this apparatus is based on angle-resolved inverse photoelectron spectroscopy. To minimize radiation damage and improve energy resolution, we employed our previous approach used in low-energy inverse photoelectron spectroscopy [Yoshida, Chem. Phys. Lett. 539–540, 180 (2012)]. We obtained the overall energy resolution of 0.23 eV with the momentum resolution of 0.9 nm^-1 at the electron kinetic energy of 2 eV or higher.