Thermoelectric properties of organic/inorganic hybrid nano-junctions

2015 Fiscal Year Final Research Report

• Project/Area Number: 25620058
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Functional solid state chemistry
• Research Institution: Osaka University
• Principal Investigator: Yamada Ryo 大阪大学, 基礎工学研究科, 准教授 (20343741)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 熱電変換 / 単分子接合 / 走査型プローブ顕微鏡

Outline of Final Research Achievements

This study aimed at understanding mechanisms of thermoelectricity in metal/single molecule/metal junctions. For this purpose, a device to measure Seebeck coefficient (S) was developed. Measurements on various molecular junctions revealed useful principles to control the sign of S such as using spin-splitting of molecular orbitals induced by coupling with ferromagnetic electrodes and heteroconjugation anchors. The largest power factor was found in metal-encapsulated C82 in which energy levels of conducting molecular orbital is altered by metal ions inside.

Free Research Field

分子エレクトロニクス