Determining the energy levels in a semiconductor nanoparticle dispersed in organic semiconductors

2015 Fiscal Year Final Research Report

• Project/Area Number: 24655012
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: Chiba University (2015); Kyoto University (2012-2014)
• Principal Investigator: Yoshida Hiroyuki 千葉大学, 融合科学研究科(研究院), 教授 (00283664)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: ナノ粒子 / 光電子収量分光法 / 電子準位

Outline of Final Research Achievements

Determining the energy levels of semiconductor nanoparticle is important to its application to optoelectronic devices. However, nanoparticle is usually coated with thick organic layer　leading to difficulty to apply ultraviolet photoemission spectroscopy due to accumulation of charges in the nanoparticle and the limited proving depth. In this work, we demonstrated that photoemission yield spectroscopy, which has a larger proving depth and is little affected by charging of the sample, is a suitable tool to examine the energy levels of nanoparticles with an insulating organic layer.

Free Research Field

物理化学