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2021 Fiscal Year Final Research Report

Room-temperature chiral light sources and lasers of atomically thin transition metal dichalcogenides

Research Project

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Project/Area Number 19K15383
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 28020:Nanostructural physics-related
Research InstitutionNagoya University

Principal Investigator

Pu Jiang  名古屋大学, 工学研究科, 助教 (00805765)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywords遷移金属ダイカルコゲナイド / 円偏光発光 / 電解質 / 発光デバイス / バレー分極
Outline of Final Research Achievements

The purpose of this research is to establish the control method of chiral light at room temperature by ustilizing the unique electronic structures of atomically thin transition metal dichalcogenides (TMDCs), which cloud finnaly yield roome-temperature chiral light sources and lasers. To achieve this goal, first, we focused on the strain-inuduced crystal symmetry breaking, which results in the electrical generation and control chiral EL. Next, we realized room-temperature chiral light-emitting devices using in-plane heterostrcutures. Third, by introducing various cavities, we achieved functional TMDC light-emitting devices that can generate cavity EL and exciton-polariton light emission.

Free Research Field

ナノ構造物理

Academic Significance and Societal Importance of the Research Achievements

本研究は、円偏光光源・レーザー素子に向けた既存手法とは異なる、材料物性・素子構造・機能化によりアプローチしている。特に、遷移金属ダイカルコゲナイド(TMDC)の内因的な自由度であるバレーを発光機能として活かすアイデアは、本材料の物理的特徴を最大限活用した独創的な応用例といえる。これに加え、ヘテロ構造や共振器導入による室温円偏光発光素子及び高機能発光素子の実現は、世界的にみても新規性の高い研究成果であり、基礎的な原理確認に留まっていたTMDCの光物性を、円偏光光源という工学応用展開へ押し上げると期待する。

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Published: 2023-01-30  

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