Investigation of thermoelectric effect in low-dimensional nano-crystals with electric field effect and organic synthesis

2023 Fiscal Year Final Research Report

• Project/Area Number: 20KK0318
• Research Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research (A))
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
• Research Institution: Toyama Prefectural University (2023); Central Research Institute of Electric Power Industry (2020-2022)
• Principal Investigator: Shimizu Sunao 富山県立大学, 工学部, 准教授 (60595932)
• Project Period (FY): 2021 – 2023
• Keywords: 熱電効果 / ナノ材料 / ナノ結晶 / 電界効果 / 有機合成

Outline of Final Research Achievements

In this research subject, we have fabricate the field effect transistors based on nano-crystals thin films as an international collaboration research. The principal investigator and the foreign collaborator have expertises of nano-device fabrication and organic synthesis, respectively. We fabricated the solutions of CdSe and CuZnInSe nano-crystals with organic synthesis technique. The thin films of CdSe and CuZnInSe nano-crystals were prepared with a spin-coating method, where the thickness of the films were less than 100 nm. Using those thin films, the field effect transistors were fabricated and the transistor operations were successfully demonstrated. Moreover, we have constructed an international research network based on the current project between Japan and Germany, we are going to pursue further collaboration in the future.

Free Research Field

材料科学

Academic Significance and Societal Importance of the Research Achievements

近年、環境（熱・光・振動）から微小エネルギーを取り出すエナジーハーベスティング技術の開発が重要な課題の一つとなっており、「物質中の温度勾配を電圧に変換する古典的な物理現象」である熱電効果による発電が、有力なエネルギー源の一つとして改めて注目を集めている。本研究のような基盤的な材料研究の継続が、優れた熱電特性を示す材料の開発に繋がると考えられる。