Engineering Perovskite Emissions via Optical Quasi-Bound-States-in-the-Continuum

Metal halide perovskite quantum dots (PQDs) have emerged as promising materials due to their exceptional photoluminescence (PL) properties. A wide range of applications could benefit from adjustable luminescence properties, while preserving the physical and chemical properties of the PQDs. Therefore...

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Published inarXiv.org
Main Authors Csányi, Evelin, Liu, Yan, Rezaei, Soroosh Daqiqeh, Henry Yit Loong Lee, Tjiptoharsono, Febiana, Mahfoud, Zackaria, Gorelik, Sergey, Zhao, Xiaofei, Li Jun Lim, Zhu, Di, Wu, Jing, Kuan Eng Johnson Goh, Gao, Weibo, Zhi-Kuang Tan, Leggett, Graham, Cheng-Wei, Qiu, Dong, Zhaogang
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 25.06.2023
Subjects
Chemical properties
Electric fields
Emitters
External pressure
Ion exchange
Luminescence
Metal halides
Nanoantennas
Optical properties
Optoelectronic devices
Perovskites
Photoluminescence
Polarization
Quantum dots
Spectral emittance
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Summary:Metal halide perovskite quantum dots (PQDs) have emerged as promising materials due to their exceptional photoluminescence (PL) properties. A wide range of applications could benefit from adjustable luminescence properties, while preserving the physical and chemical properties of the PQDs. Therefore, post-synthesis engineering has gained attention recently, involving the use of ion-exchange or external stimuli, such as extreme pressure, magnetic and electric fields. Nevertheless, these methods typically suffer from spectrum broadening, intensity quenching or yield multiple bands. Alternatively, photonic antennas can modify the radiative decay channel of perovskites via the Purcell effect, with the largest wavelength shift being 8 nm to date, at an expense of 5-fold intensity loss. Here, we present an optical nanoantenna array with polarization-controlled quasi-bound-states-in-the-continuum (q-BIC) resonances, which can engineer and shift the photoluminescence wavelength over a ~39 nm range and confers a 21-fold emission enhancement of FAPbI3 perovskite QDs. The spectrum is engineered in a non-invasive manner via lithographically defined antennas and the pump laser polarization at ambient conditions. Our research provides a path towards advanced optoelectronic devices, such as spectrally tailored quantum emitters and lasers.
ISSN:2331-8422