Advanced Photonics, Volume. 5, Issue 5, 055001(2023)
Perturbation-driven echo-like superfluorescence in perovskite superlattices
Fig. 1. SF effect in perovskite QD superlattice. (a) Sketch of a superlattice sample assembled by
Fig. 2. Echo-like SF behavior under a controllable disturbance. (a)–(c) Time-resolved photoluminescence (PL) spectra at 10 K. The intensities are normalized by the intensity of the first peak. The arrows below the horizontal axis indicate the pulsed excitation times. The pulse densities
Fig. 3. Echo-like SF behavior versus the temperature of crystal lattice. (a) Temperature-dependent cooperation state of the exciton ensemble, which is determined by the competition of two mechanisms, i.e., the cooperative mechanism via the virtual light field (represented by orange/green background) and the dephasing mechanism via phonon scattering (represented by the twisted lattice). The state of the exciton ensemble changes from “cooperative” at 10 K to “partially cooperative” at 50 K and “noncooperative” at 100 K. (b) Radiation response for an exciton ensemble at different temperatures. The data shown by solid lines are excited by
Fig. 4. Echo-like SF behavior versus the disturbance strength. (a) Radiation dynamics for different disturbance amplitudes. Other excitation parameters (
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Qiangqiang Wang, Jiqing Tan, Qi Jie, Hongxing Dong, Yongsheng Hu, Chun Zhou, Saifeng Zhang, Yichi Zhong, Shuang Liang, Long Zhang, Wei Xie, Hongxing Xu, "Perturbation-driven echo-like superfluorescence in perovskite superlattices," Adv. Photon. 5, 055001 (2023)
Category: Letters
Received: Feb. 22, 2023
Accepted: Sep. 11, 2023
Published Online: Oct. 7, 2023
The Author Email: Hongxing Dong (hongxingd@siom.ac.cn), Wei Xie (wxie@phy.ecnu.edu.cn), Hongxing Xu (hxxu@whu.edu.cn)