Tailoring photoluminescence of WS<sub>2</sub>-microcavity coupling devices in broad visible range
نویسندگان
چکیده
Abstract Most of the previous TMDC-photon coupling devices were mainly based on A exciton due to its high oscillator strength and large binding energy. Less effort has been focused modulation emission B Rydberg states in TMDCs, especially monolayer WS 2 . Here, we demonstrate that photoluminescence (PL) -microcavity can be tailored a broad visible wavelength range (490 nm–720 nm). In contrast intrinsic PL , 25-fold enhanced significant from 2s state observed. From transient absorption (TA) measurements, strongly coupled hybrid remarkably fingerprinted. Furthermore, demonstrated increased lower polariton (LP) population internal conversion pathway being blocked strong regime. Besides, remarkable is also revealed confirmed by additional ground bleaching signal TA spectra. These physical mechanisms about tailoring low dimensional TMDCs provide references for constructing highly efficient optoelectronic devices.
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ژورنال
عنوان ژورنال: Nanophotonics
سال: 2023
ISSN: ['2192-8606', '2192-8614']
DOI: https://doi.org/10.1515/nanoph-2022-0705