Xuezhu Sha, Xin Chen, Duan Gao, Li Wang, Yanqiu Zhang, Xizhen Zhang, Jinsu Zhang, Sai Xu, Yongze Cao, Yichao Wang, Xiangping Li, Hongquan Yu, Baojiu Chen and Wei Chen
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引用次数: 0
Abstract
McCumber theory describes the relationship between the absorption and emission cross-sections of ionic luminescence centers and is frequently used for determining absorption and emission cross-sections. However, the present application method of this theory seems complicated and exposes some faultiness. In this work, we proposed a simple and reliable procedure for determining the absorption and emission cross-sections based on McCumber theory with the assistance of Einstein's A/B coefficient relationship. The route we proposed was applied to confirm the absorption cross-sections of the transitions from 4I15/2 to 2H11/2, 4S3/2, 4F9/2, 4I11/2, and 4I13/2 of Er3+ in the NaY(WO4)2 compound. The absorption cross-sections determined from our proposed route were compared with those derived from a traditional approach, and it was found that the results derived from our route are reliable. Moreover, the corresponding parameters in the McCumber theoretical expression are referenced for other Er3+-doped luminescent materials.
期刊介绍:
The Journal of Materials Chemistry is divided into three distinct sections, A, B, and C, each catering to specific applications of the materials under study:
Journal of Materials Chemistry A focuses primarily on materials intended for applications in energy and sustainability.
Journal of Materials Chemistry B specializes in materials designed for applications in biology and medicine.
Journal of Materials Chemistry C is dedicated to materials suitable for applications in optical, magnetic, and electronic devices.
Example topic areas within the scope of Journal of Materials Chemistry C are listed below. This list is neither exhaustive nor exclusive.
Bioelectronics
Conductors
Detectors
Dielectrics
Displays
Ferroelectrics
Lasers
LEDs
Lighting
Liquid crystals
Memory
Metamaterials
Multiferroics
Photonics
Photovoltaics
Semiconductors
Sensors
Single molecule conductors
Spintronics
Superconductors
Thermoelectrics
Topological insulators
Transistors