期刊
LIGHT-SCIENCE & APPLICATIONS
卷 10, 期 1, 页码 -出版社
SPRINGERNATURE
DOI: 10.1038/s41377-021-00501-0
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资金
- National Natural Science Foundation of China [21771114, 91956130]
- Natural Science Foundation of Tianjin [18YFZCGX00580]
- Distinguished Young Scholars of Tianjin [19JCJQJC62000]
Quasi-2D perovskites have superior semiconducting properties and outstanding optical characteristics due to their structural characteristics. The inherent quantum-well structure gives them a large exciton binding energy, resulting in high PLQY.
Quasi-two-dimensional (quasi-2D) perovskites have attracted extraordinary attention due to their superior semiconducting properties and have emerged as one of the most promising materials for next-generation light-emitting diodes (LEDs). The outstanding optical properties originate from their structural characteristics. In particular, the inherent quantum-well structure endows them with a large exciton binding energy due to the strong dielectric and quantum-confinement effects; the corresponding energy transfer among different n-value species thus results in high photoluminescence quantum yields (PLQYs), particularly at low excitation intensities. The review herein presents an overview of the inherent properties of quasi-2D perovskite materials, the corresponding energy transfer and spectral tunability methodologies for thin films, as well as their application in high-performance LEDs. We then summarize the challenges and potential research directions towards developing high-performance and stable quasi 2D PeLEDs. The review thus provides a systematic and timely summary for the community to deepen the understanding of quasi-2D perovskite materials and resulting LED devices.
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