The high-speed and high-accuracy evaluation of conduction band in semiconductor by visible-light photoemission spectroscopy

2014 Fiscal Year Final Research Report

• Project/Area Number: 26630128
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Electronic materials/Electric materials
• Research Institution: Nagoya University
• Principal Investigator: UJIHARA Toru 名古屋大学, グリーンモビリティ連携研究センター, 教授 (60312641)
• Project Period (FY): 2014-04-01 – 2015-03-31
• Keywords: 光電子分光法 / 半導体 / 太陽電池

Outline of Final Research Achievements

In this study, we evaluated the mini-band structure of superlattice structure with the visible-light photoemission spectroscopy developed by us. In addition, the energy distribution of the conducting electrons in the mini-band was measured, too. In particular, the exciting-light-energy dependence of the electron distribution was investigated. As a result, we successfully measured the energy of electrons conducting in the second mini-band. This means that the part of the electrons in the second mini-band reached to the surface without its relaxing to the first mini-band.

Free Research Field

結晶成長