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Photoluminescence lifetime engineering via organic resonant films with molecular aggregates
- Title
- Photoluminescence lifetime engineering via organic resonant films with molecular aggregates
- Authors
- Choi; Kyu-Ri; Li; Shilong; Park; Dong Hee; Joo; Bin Chan; Lee; Hojun; Kang; Evan S.H.; Chormaic; Síle Nic; Wu; Jeong Weon; D’Aléo; Anthony; Ui Lee; Yeon
- Ewha Authors
- 우정원
- SCOPUS Author ID
- 우정원
- Issue Date
- 2024
- Journal Title
- Nanophotonics
- ISSN
- 2192-8614
- Citation
- Nanophotonics vol. 13, no. 7, pp. 1033 - 1037
- Keywords
- lifetime engineering; organic ENZ/ENP materials; Purcell effect
- Publisher
- Walter de Gruyter GmbH
- Indexed
- SCOPUS
- Document Type
- Article
- Abstract
- Manipulating the spontaneous emission rate of fluorophores is vital in creating bright incoherent illumination for optical sensing and imaging, as well as fast single-photon sources for quantum technology applications. This can be done via increasing the Purcell effect by using non-monolithic optical nanocavities; however, achieving the desired performance is challenging due to difficulties in fabrication, precise positioning, and frequency tuning of cavity-emitter coupling. Here, we demonstrate a simple approach to achieve a wavelength-dependent photoluminescence (PL) lifetime modification using monolithic organic molecular aggregates films. These single monolithic organic films are designed to have a Lorentzian dispersion, including epsilon-near-zero (ENZ) and epsilon-near-pole (ENP) spectral regions with increased and decreased photonic density of states, respectively. This dispersion leads to enhanced and depressed PL decay rates at different wavelengths. Both time-resolved photoluminescence (TRPL) and fluorescence lifetime imaging microscopy (FLIM) measurements are implemented to verify the validity of this approach. This approach offers a promising way to design dual-functional optical sources for a variety of applications, including bioimaging, sensing, data communications, and quantum photonics applications. © 2023 the author(s), published by De Gruyter.
- DOI
- 10.1515/nanoph-2023-0631
- Appears in Collections:
- 자연과학대학 > 물리학전공 > Journal papers
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