A promising temperature sensor based on all-quantum-dot multilayer via layer-by-layer self-assembled method
文献类型：期刊论文
| 作者 | Liu, Ni2,3; Li, Shuxin1,4 ; Chen, Ligang2,3; Zheng, Wen2,3
|
| 刊名 | OPTICAL MATERIALS
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 108 |
| 关键词 | Surface modification LBL self-assembly Temperature-dependent PL Luminescence sensor |
| ISSN号 | 0925-3467 |
| DOI | 10.1016/j.optmat.2020.110460 |
| 通讯作者 | Liu, Ni(liuni106@bzu.edu.cn) |
| 英文摘要 | This study describes the fabrication, performance and characterization of a luminescence temperature sensor based on ordered all-quantum-dot (QD) multilayers. Highly photoluminescent and stable CdSe/ZnS core-shell QDs modified with two types of surface functional groups (-NH2 and -COOH) were prepared via aqueous route. Ordered thin films (film-A), based on alternate assembly of CdSe/ZnS-COOH (negatively charged) and CdSe/ZnS-NH2 (positively charged), were fabricated through electrostatic layer-by-layer (LBL) self-assembly technique. The temperature-dependent fluorescent properties of film-A (temperature-dependent photoluminescence; transient spectroscopy) were compared with that of a QD-polymer film (PDDA-CdSe/ZnS-COOH films; film-B) also prepared using electrostatic LBL self -assembly. Compared with film-B, film-A showed significant temperature sensitivity and fluorescence lifetime over the range 50-300 K. In addition, structural characterization of CdSe/ZnS-COOH and CdSe/ZnS-NH2 QDs were symmetrically characterized by transmission electron microscope (TEM) and the average diameters of the two QDs were both around 4.2 nm. The two functional groups (-COOH and -NH2) were confirmed by X-ray photoelectron spectroscopy (XPS). The results suggested that ordered all-QD multilayer films may have good potential in applications requiring sensors for optical thermometry. |
| WOS关键词 | DEPENDENT PHOTOLUMINESCENCE ; OPTICAL-PROPERTIES ; LUMINESCENCE ; FILMS ; CDTE |
| 资助项目 | National Natural Science Foundation of China[U1731121] ; Scientific Research Foundation of Bin Zhou University[BZXYLG1901] |
| WOS研究方向 | Materials Science ; Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:000585260600007 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Scientific Research Foundation of Bin Zhou University |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/105188]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Liu, Ni |
| 作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Technol, Hefei 230031, Peoples R China 2.Binzhou Univ, Coll Aeronaut Engn, Binzhou 256603, Shandong, Peoples R China 3.Shandong Engn Res Ctr Aeronaut Mat & Devices, Qingdao, Peoples R China 4.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Ni,Li, Shuxin,Chen, Ligang,et al. A promising temperature sensor based on all-quantum-dot multilayer via layer-by-layer self-assembled method[J]. OPTICAL MATERIALS,2020,108. |
| APA | Liu, Ni,Li, Shuxin,Chen, Ligang,&Zheng, Wen.(2020).A promising temperature sensor based on all-quantum-dot multilayer via layer-by-layer self-assembled method.OPTICAL MATERIALS,108. |
| MLA | Liu, Ni,et al."A promising temperature sensor based on all-quantum-dot multilayer via layer-by-layer self-assembled method".OPTICAL MATERIALS 108(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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