Mechanoluminescent(ML) smart materials are expected to be used in stress sensors, new displays, and advanced flexible optoelectronic devices, because of their unique mechanical-to-light energy conversion properties. H...Mechanoluminescent(ML) smart materials are expected to be used in stress sensors, new displays, and advanced flexible optoelectronic devices, because of their unique mechanical-to-light energy conversion properties. However,the narrow-range ML emission characteristics of single materials limit their application scope. In this work, we report on the broadband multimodal emission in Sb-doped Ca Zn OS layered semiconductors. A series of Ca Zn OS layer-structured powders with different Sb^(3+) doping concentrations were synthesised using a high-temperature solid-phase method. The Ca Zn OS:Sb^(3+) phosphor achieved a wide range of ML spectra(400–900 nm), adjustable photoluminescence with double luminescent peaks located at 465 and 620 nm, and the X-rayinduced luminescence characteristics were systematically studied. We have also achieved ultra-broad warm white light ML emission of Sb^(3+) and Bi^(3+) co-doped samples. Therefore, it can be expected that these ML phosphors will be used in smart lighting, displays, visible stress sensors, and X-ray imaging and detections.展开更多
基金supported by the National Natural Science Foundation of China (61875136 and 52002246)the Fundamental Research Project of Guangdong Province (2020A1515011315)+2 种基金Shenzhen Fundamental Research Project (JCYJ20190808170601664)the Science and Technology Innovation Project of Shenzhen Excellent Talents (RCBS20200714114919006)the Scientific Research Foundation as Phase II construction of high-level University for the Youth Scholars of Shenzhen University 2019 (000002110223)。
文摘Mechanoluminescent(ML) smart materials are expected to be used in stress sensors, new displays, and advanced flexible optoelectronic devices, because of their unique mechanical-to-light energy conversion properties. However,the narrow-range ML emission characteristics of single materials limit their application scope. In this work, we report on the broadband multimodal emission in Sb-doped Ca Zn OS layered semiconductors. A series of Ca Zn OS layer-structured powders with different Sb^(3+) doping concentrations were synthesised using a high-temperature solid-phase method. The Ca Zn OS:Sb^(3+) phosphor achieved a wide range of ML spectra(400–900 nm), adjustable photoluminescence with double luminescent peaks located at 465 and 620 nm, and the X-rayinduced luminescence characteristics were systematically studied. We have also achieved ultra-broad warm white light ML emission of Sb^(3+) and Bi^(3+) co-doped samples. Therefore, it can be expected that these ML phosphors will be used in smart lighting, displays, visible stress sensors, and X-ray imaging and detections.
