Enhanced photoluminescence of a CsPbBr3/Al2O3 film heterojunction enabled by coupling of gold nanoparticles
We studied an enhanced photoluminescence (PL) effect of CsPbBr _3 /Al _2 O _3 heterojunction by using gold nanoparticls (NPs). The CsPbBr _3 /Al _2 O _3 heterojunction and CsPbBr _3 /Au/Al _2 O _3 heterojunction were respectively prepared on porous Al _2 O _3 film by using a colloidal self-assembly...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/abc218 |
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| author | Zhongchen Bai Xueqin Wang Zhengping Zhang Shuijie Qin |
| author_facet | Zhongchen Bai Xueqin Wang Zhengping Zhang Shuijie Qin |
| author_sort | Zhongchen Bai |
| collection | DOAJ |
| description | We studied an enhanced photoluminescence (PL) effect of CsPbBr _3 /Al _2 O _3 heterojunction by using gold nanoparticls (NPs). The CsPbBr _3 /Al _2 O _3 heterojunction and CsPbBr _3 /Au/Al _2 O _3 heterojunction were respectively prepared on porous Al _2 O _3 film by using a colloidal self-assembly method. The defect fluorescence of CsPbBr _3 /Al _2 O _3 heterojunction was enhanced up to 40 times due to the transfer of photo-generated carriers from the CsPbBr _3 quantum dots (QDs) to the porous Al _2 O _3 film. To suppress the defect fluorescence of heterojunction, the CsPbBr _3 /Au/Al _2 O _3 heterojunction was prepared by loading the gold NPs between the CsPbBr _3 QDs film and the porous Al _2 O _3 film. The results showed that the gold NPs facilitated the transfer of the photo-generated carriers from the CsPbBr _3 QDs to the surface of porous Al _2 O _3 film. Compared with the porous Al _2 O _3 film and CsPbBr _3 /Al _2 O _3 heterojunction, the peak fluorescence of CsPbBr _3 /Au/Al _2 O _3 heterojunction was enhanced to 6.4 times and 2.8 times, respectively. This method of enhanced fluorescence of QD heterojunction provides a new pathway in the applications of photovoltaic, photodetector, LED, image sensor, photocatalysis. |
| first_indexed | 2024-03-12T15:42:51Z |
| format | Article |
| id | doaj.art-2057ecf24c0e4bbc97f4b0db2f28ccf8 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:42:51Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-2057ecf24c0e4bbc97f4b0db2f28ccf82023-08-09T15:52:00ZengIOP PublishingMaterials Research Express2053-15912020-01-0171010620110.1088/2053-1591/abc218Enhanced photoluminescence of a CsPbBr3/Al2O3 film heterojunction enabled by coupling of gold nanoparticlesZhongchen Bai0https://orcid.org/0000-0002-0286-4246Xueqin Wang1Zhengping Zhang2Shuijie Qin3https://orcid.org/0000-0003-3209-4067College of Medicine, Guizhou University , Guiyang City, 550025, People’s Republic of China; Guizhou Province Key Lab. for Photoelectric Technology and Application, Guizhou University , Guiyang City, 550025, People’s Republic of ChinaCollege of Medicine, Guizhou University , Guiyang City, 550025, People’s Republic of China; Guizhou Province Key Lab. for Photoelectric Technology and Application, Guizhou University , Guiyang City, 550025, People’s Republic of ChinaGuizhou Province Key Lab. for Photoelectric Technology and Application, Guizhou University , Guiyang City, 550025, People’s Republic of ChinaGuizhou Province Key Lab. for Photoelectric Technology and Application, Guizhou University , Guiyang City, 550025, People’s Republic of ChinaWe studied an enhanced photoluminescence (PL) effect of CsPbBr _3 /Al _2 O _3 heterojunction by using gold nanoparticls (NPs). The CsPbBr _3 /Al _2 O _3 heterojunction and CsPbBr _3 /Au/Al _2 O _3 heterojunction were respectively prepared on porous Al _2 O _3 film by using a colloidal self-assembly method. The defect fluorescence of CsPbBr _3 /Al _2 O _3 heterojunction was enhanced up to 40 times due to the transfer of photo-generated carriers from the CsPbBr _3 quantum dots (QDs) to the porous Al _2 O _3 film. To suppress the defect fluorescence of heterojunction, the CsPbBr _3 /Au/Al _2 O _3 heterojunction was prepared by loading the gold NPs between the CsPbBr _3 QDs film and the porous Al _2 O _3 film. The results showed that the gold NPs facilitated the transfer of the photo-generated carriers from the CsPbBr _3 QDs to the surface of porous Al _2 O _3 film. Compared with the porous Al _2 O _3 film and CsPbBr _3 /Al _2 O _3 heterojunction, the peak fluorescence of CsPbBr _3 /Au/Al _2 O _3 heterojunction was enhanced to 6.4 times and 2.8 times, respectively. This method of enhanced fluorescence of QD heterojunction provides a new pathway in the applications of photovoltaic, photodetector, LED, image sensor, photocatalysis.https://doi.org/10.1088/2053-1591/abc218surface enhanced fluorescencequantum dot heterojunctionporous Al2O3 filmCsPbBr3 quantum dotgold nanoparteilces (NPs) |
| spellingShingle | Zhongchen Bai Xueqin Wang Zhengping Zhang Shuijie Qin Enhanced photoluminescence of a CsPbBr3/Al2O3 film heterojunction enabled by coupling of gold nanoparticles Materials Research Express surface enhanced fluorescence quantum dot heterojunction porous Al2O3 film CsPbBr3 quantum dot gold nanoparteilces (NPs) |
| title | Enhanced photoluminescence of a CsPbBr3/Al2O3 film heterojunction enabled by coupling of gold nanoparticles |
| title_full | Enhanced photoluminescence of a CsPbBr3/Al2O3 film heterojunction enabled by coupling of gold nanoparticles |
| title_fullStr | Enhanced photoluminescence of a CsPbBr3/Al2O3 film heterojunction enabled by coupling of gold nanoparticles |
| title_full_unstemmed | Enhanced photoluminescence of a CsPbBr3/Al2O3 film heterojunction enabled by coupling of gold nanoparticles |
| title_short | Enhanced photoluminescence of a CsPbBr3/Al2O3 film heterojunction enabled by coupling of gold nanoparticles |
| title_sort | enhanced photoluminescence of a cspbbr3 al2o3 film heterojunction enabled by coupling of gold nanoparticles |
| topic | surface enhanced fluorescence quantum dot heterojunction porous Al2O3 film CsPbBr3 quantum dot gold nanoparteilces (NPs) |
| url | https://doi.org/10.1088/2053-1591/abc218 |
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