Thermoelectric thin films of group IV layered materials

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K20492
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0402:Nano/micro science, applied condensed matter physics, applied physics and engineering, and related fields
• Research Institution: Tohoku University
• Principal Investigator: Terada Tsukasa 東北大学, 金属材料研究所, 助教 (00963662)
• Project Period (FY): 2022-08-31 – 2024-03-31
• Keywords: 薄膜成長 / 層状物質 / ゲルマネン

Outline of Final Research Achievements

In this research, we focused on controlling the interlayer elements of layered materials containing germanene, a two-dimensional atomic layer of Ge, aiming to manipulate its electrical conduction properties. By controlling the intercalation elements, we developed novel layered materials containing germanene and aimed to achieve high mobility and high thermoelectric properties coming from germanene. We successfully discovered a new layered material containing germanene by controlling the reaction time between the fabricated thin film and hydrochloric acid, and found that electrical properties can be controlled from metallic to semiconducting states.

Free Research Field

薄膜成長

Academic Significance and Societal Importance of the Research Achievements

高移動度を示しうるGe二次元原子層ゲルマネンを結晶構造内に内包する新奇層状物質を発見し、電気伝導特性を制御できることを見出した。本物質はこれまでに報告がなく、ゲルマネンの特異電気伝導特性を利用した半導体デバイスの実現に向けた研究の前進が期待される。