Optical response of van der Waals heterointerface by symmetry engineering

通过对称工程研究范德华异质界面的光学响应

• 批准号: 22KJ1096
• 负责人: 董 禹
• 金额: $ 1.6万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2025-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22KJ1096/
• 关键词: 3R MoS2; bulk photovoltaic effect; strain

In the past year, I focused on bulk piezophotovoltaic effect in 3R-MoS2. By straining 3R-MoS2, the rotational symmetry is broken, and we expect an in-plane polarization to arise. Thus, we observed the bulk piezophotovoltaic effect. The bulk photovoltaic (BPV) response is greatly enhanced by strain and the BPV coefficient increases at least two orders by 0.2% of strain. This work was published in Nature Nanotechnology in Nov 2022. Last year, I also carried out a research internship in Xiaodong Xu lab, University of Washington, where I learnt many useful skills in device fabrication and optical set-up construction.

在过去的一年里，我专注于3R-MoS 2的体压电光伏效应。通过使3R-MoS 2应变，旋转对称性被破坏，并且我们期望出现面内偏振。因此，我们观察到了体压电光伏效应。体光伏（BPV）响应大大增强应变和BPV系数增加至少两个数量级的0.2%的应变。这项工作于2022年11月发表在Nature Nanotechnology上。去年，我还在华盛顿大学的Xiaodong Xu实验室进行了研究实习，在那里我学到了许多有用的设备制造和光学设置构建方面的技能。

项目成果

Nonlinear- optical response in strain-engineered 3R MoS2

应变工程 3R MoS2 中的非线性光学响应

• 发表时间: 2022
• 作者: Dong Yu;Yang Ming-Min;Yoshii Mao;Matsuoka Satoshi;Kitamura Sota;Hasegawa Tatsuo;Ogawa Naoki;Morimoto Takahiro;Ideue Toshiya;Iwasa Yoshihiro;Dong Yu;Dong Yu
• 通讯作者: Dong Yu

Giant bulk piezophotovoltaic effect in 3R-MoS2

• DOI: 10.1038/s41565-022-01252-8
• 发表时间: 2022-11-21
• 期刊: NATURE NANOTECHNOLOGY
• 影响因子: 38.3
• 作者: Dong, Yu;Yang, Ming-Min;Iwasa, Yoshihiro
• 通讯作者: Iwasa, Yoshihiro

Symmetry engineering in strained 3R MoS2

应变 3R MoS2 中的对称工程

• 发表时间: 2022
• 作者: Dong Yu;Yang Ming-Min;Yoshii Mao;Matsuoka Satoshi;Kitamura Sota;Hasegawa Tatsuo;Ogawa Naoki;Morimoto Takahiro;Ideue Toshiya;Iwasa Yoshihiro;Dong Yu
• 通讯作者: Dong Yu

Colossal bulk piezophotovoltaic effect of 3R stacking MoS2

3R 堆叠 MoS2 的巨大体压电光伏效应

• 发表时间: 2022
• 作者: Dong Yu;Yang Ming-Min;Yoshii Mao;Matsuoka Satoshi;Kitamura Sota;Hasegawa Tatsuo;Ogawa Naoki;Morimoto Takahiro;Ideue Toshiya;Iwasa Yoshihiro;Dong Yu;Dong Yu;Dong Yu
• 通讯作者: Dong Yu