Macroscopic electro-optical modulation of solution-processed molybdenum disulfide
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
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2024
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| _version_ | 1866929516475056128 |
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| author | Liu, Songwei Wen, Yingyi Pei, Jingfang Fan, Xiaoyue Zhou, Yongheng Liu, Yang Ng, Ling-Kiu Lin, Yue Ma, Teng Zhang, Panpan Chen, Xiaolong Wang, Gang Hu, Guohua |
| author_facet | Liu, Songwei Wen, Yingyi Pei, Jingfang Fan, Xiaoyue Zhou, Yongheng Liu, Yang Ng, Ling-Kiu Lin, Yue Ma, Teng Zhang, Panpan Chen, Xiaolong Wang, Gang Hu, Guohua |
| contents | Molybdenum disulfide (MoS2) has drawn great interest for tunable photonics and optoelectronics advancement. Its solution processing, though scalable, results in randomly networked ensembles of discrete nanosheets with compromised properties for tunable device fabrication. Here, we show via density-functional theory calculations that the electronic structure of the individual solution-processed nanosheets can be modulated by external electric fields collectively. Particularly, the nanosheets can form Stark ladders, leading to variations in the underlying optical transition processes and thus, tunable macroscopic optical properties of the ensembles. We experimentally confirm the macroscopic electro-optical modulation employing solution-processed thin-films of MoS2 and ferroelectric P(VDF-TrFE), and prove that the localized polarization fields of P(VDF-TrFE) can modulate the optical properties of MoS2, specifically, the optical absorption and photoluminescence on a macroscopic scale. Given the scalability of solution processing, our results underpin the potential of electro-optical modulation of solution-processed MoS2 for scalable tunable photonics and optoelectronics. As an illustrative example, we successfully demonstrate solution-processed electro-absorption modulators. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_16194 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Macroscopic electro-optical modulation of solution-processed molybdenum disulfide Liu, Songwei Wen, Yingyi Pei, Jingfang Fan, Xiaoyue Zhou, Yongheng Liu, Yang Ng, Ling-Kiu Lin, Yue Ma, Teng Zhang, Panpan Chen, Xiaolong Wang, Gang Hu, Guohua Materials Science Molybdenum disulfide (MoS2) has drawn great interest for tunable photonics and optoelectronics advancement. Its solution processing, though scalable, results in randomly networked ensembles of discrete nanosheets with compromised properties for tunable device fabrication. Here, we show via density-functional theory calculations that the electronic structure of the individual solution-processed nanosheets can be modulated by external electric fields collectively. Particularly, the nanosheets can form Stark ladders, leading to variations in the underlying optical transition processes and thus, tunable macroscopic optical properties of the ensembles. We experimentally confirm the macroscopic electro-optical modulation employing solution-processed thin-films of MoS2 and ferroelectric P(VDF-TrFE), and prove that the localized polarization fields of P(VDF-TrFE) can modulate the optical properties of MoS2, specifically, the optical absorption and photoluminescence on a macroscopic scale. Given the scalability of solution processing, our results underpin the potential of electro-optical modulation of solution-processed MoS2 for scalable tunable photonics and optoelectronics. As an illustrative example, we successfully demonstrate solution-processed electro-absorption modulators. |
| title | Macroscopic electro-optical modulation of solution-processed molybdenum disulfide |
| topic | Materials Science |
| url | https://arxiv.org/abs/2401.16194 |