Room temperature exciton-polaritons in high-quality 2D Ruddlesden–Popper perovskites (BA)2(MA)n-1PbnI3n+1 (n = 3, 4)
| Autor: | Tingge Gao, Xiao Wang, Siman Liu, Xianwei Fu, Lanyu Huang, Chenxing Ouyang, Yao Li, Anlian Pan, Zhouxiaosong Zeng |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Range (particle radiation) Pl spectroscopy Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Oscillator strength Binding energy 02 engineering and technology Exciton-polaritons 021001 nanoscience & nanotechnology 01 natural sciences Quality (physics) 0103 physical sciences Polariton 0210 nano-technology |
| Zdroj: | Applied Physics Letters. 117:221107 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/5.0029624 |
| Popis: | Due to large binding energy and oscillator strength, 2D Ruddlesden–Popper perovskites are promising materials for the realization of room temperature coupled exciton-polaritons. Here, we demonstrate room temperature exciton-polaritons in high-quality exfoliated 2D RPP (BA)2(MA)n−1PbnI3n+1 (n = 3, 4) flakes without the use of external Distributed Bragg Reflectors. By angle-resolved PL spectroscopy, we obtain multi-mode low polariton branches and the Rabi splitting in the range of about 160 meV–180 meV for n = 3 and n = 4 flakes. The realization of room temperature exciton-polaritons in 2D RPPs with a large n value provides a potential platform for polaritonic device applications. |
| Databáze: | OpenAIRE |
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