Excitation-tailored dual-color emission of manganese(II)-doped perovskite nanocrystals
| Autor: | Min Xiao, Hongfei Chen, Lan Chen, Zhengyuan Qin, Chunfeng Zhang, Xiaoyong Wang, Hai Sang, Zhangzhang Chen |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Photoluminescence Physics and Astronomy (miscellaneous) Dopant business.industry Exciton Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences law.invention Condensed Matter::Materials Science Light intensity law 0103 physical sciences Physics::Atomic and Molecular Clusters Optoelectronics Light emission 0210 nano-technology business Luminescence Excitation |
| Zdroj: | Applied Physics Letters. 114:041902 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.5081730 |
| Popis: | Manganese(II)-doped perovskite nanocrystals with superior dual-color light emission properties are promising for optoelectronic applications. Here, we report that the emission color of these nanocrystals can be tailored by continuous-wave excitation because of the saturation of dopant emission at a record low light density (∼10 mW/cm2). By detuning the repetition rates of excitation laser sources, we show that the bottleneck of exciton-manganese(II) energy transfer caused by the imbalanced excitation and deexcitation of 4T1 states is the primary mechanism underlying the emission saturation properties. Such a dual-color luminescence tunable by weak excitation is promising for uses in potential applications such as luminescent solar concentrators, light intensity sensors, anti-counterfeit printing, and photo-switchable image markers. |
| Databáze: | OpenAIRE |
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