1. Linear and nonlinear optical characteristics of all-inorganic perovskite CsPbBr3 quantum dots modified by hydrophobic zeolites
- Author
-
Xiaohua Wang, Junzi Li, Zhipeng Wei, Ruxue Li, Xuan Fang, Hongrui Yu, Rui Chen, Dan Fang, Haixia Zhao, and Tingchao He
- Subjects
Materials science ,Nanocomposite ,business.industry ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Optical stability ,Dissociation (chemistry) ,0104 chemical sciences ,Nonlinear optical ,Quantum dot ,Optoelectronics ,General Materials Science ,Quantum efficiency ,Laser illumination ,0210 nano-technology ,Luminescence ,business - Abstract
All-inorganic perovskite quantum dots (QDs) have been considered as outstanding candidates for high-performance optoelectronic device applications. However, the chemical and optical stabilities restrict their device applications. In this paper, hydrophobic zeolites were proposed to modify CsPbBr3 QDs to prevent water influence while achieving good dispersion. These hybrid luminescent materials possess high internal quantum efficiency (IQE, ∼81%@3.52 W cm−2) and low dissociation levels that give rise to improved optical stability in terms of temperature and time. More interesting, it is found that this nanocomposite is able to maintain its optical limiting performance under intensive laser illumination. This paper discusses the linear and nonlinear optical characteristics of CsPbBr3 QDs, which would be of great importance for both fundamental physics investigation and practical multiphoton applications.
- Published
- 2018