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ShanghaiTech University Knowledge Management System
MoTe2 Photodetector for Integrated Lithium Niobate Photonics | |
2025 | |
发表期刊 | NANOMATERIALS (IF:4.4[JCR-2023],4.7[5-Year]) |
ISSN | 2079-4991 |
EISSN | 2079-4991 |
卷号 | 15期号:1 |
发表状态 | 已发表 |
DOI | 10.3390/nano15010072 |
摘要 | The integration of a photodetector that converts optical signals into electrical signals is essential for scalable integrated lithium niobate photonics. Two-dimensional materials provide a potential high-efficiency on-chip detection capability. Here, we demonstrate an efficient on-chip photodetector based on a few layers of MoTe2 on a thin film lithium niobate waveguide and integrate it with a microresonator operating in an optical telecommunication band. The lithium-niobate-on-insulator waveguides and micro-ring resonator are fabricated using the femtosecond laser photolithography-assisted chemical-mechanical etching method. The lithium niobate waveguide-integrated MoTe2 presents an absorption coefficient of 72% and a transmission loss of 0.27 dB mu m(-1) at 1550 nm. The on-chip photodetector exhibits a responsivity of 1 mA W-1 at a bias voltage of 20 V, a low dark current of 1.6 nA, and a photo-dark current ratio of 108 W-1. Due to effective waveguide coupling and interaction with MoTe2, the generated photocurrent is approximately 160 times higher than that of free-space light irradiation. Furthermore, we demonstrate a wavelength-selective photonic device by integrating the photodetector and micro-ring resonator with a quality factor of 10(4) on the same chip, suggesting potential applications in the field of on-chip spectrometers and biosensors. |
关键词 | on-chip photodetectors MoTe2 microresonator lithium niobate photonics photolithography-assisted chemical-mechanical etching |
URL | 查看原文 |
收录类别 | SCI |
语种 | 英语 |
资助项目 | National Key R&D Program of China[ |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
WOS类目 | Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
WOS记录号 | WOS:001395081500001 |
出版者 | MDPI |
文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/483908 |
专题 | 物质科学与技术学院 物质科学与技术学院_博士生 |
通讯作者 | Sun, Xinxing; Cheng, Ya |
作者单位 | 1.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech SIOM, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech SIOM, CAS Ctr Excellence Ultraintense Laser Sci, Shanghai 201800, Peoples R China 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China 4.East China Normal Univ, Sch Phys & Elect Sci, Extreme Optoelectromechan Lab XXL, Shanghai 200241, Peoples R China |
第一作者单位 | 物质科学与技术学院 |
推荐引用方式 GB/T 7714 | Dong, Qiaonan,Sun, Xinxing,Gao, Lang,et al. MoTe2 Photodetector for Integrated Lithium Niobate Photonics[J]. NANOMATERIALS,2025,15(1). |
APA | Dong, Qiaonan,Sun, Xinxing,Gao, Lang,Zheng, Yong,Wu, Rongbo,&Cheng, Ya.(2025).MoTe2 Photodetector for Integrated Lithium Niobate Photonics.NANOMATERIALS,15(1). |
MLA | Dong, Qiaonan,et al."MoTe2 Photodetector for Integrated Lithium Niobate Photonics".NANOMATERIALS 15.1(2025). |
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