Geometry modulated upconversion photoluminescence of individual NaYF4: Yb3+, Er3+ microcrystals
Upconversion (UC) photoluminescence (PL) properties of individual β-NaYF4: Yb3+, Er3+ microcrystals are investigated on their crystal orientation and size by a confocal micro-photoluminescence (μ-PL) system. The UC PL intensities including red and green bands of individual microcrystals change nearl...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2017-02-01
|
| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4977020 |
| _version_ | 1818129963378802688 |
|---|---|
| author | Bing Wang Jiao Wang Yongfeng Mei |
| author_facet | Bing Wang Jiao Wang Yongfeng Mei |
| author_sort | Bing Wang |
| collection | DOAJ |
| description | Upconversion (UC) photoluminescence (PL) properties of individual β-NaYF4: Yb3+, Er3+ microcrystals are investigated on their crystal orientation and size by a confocal micro-photoluminescence (μ-PL) system. The UC PL intensities including red and green bands of individual microcrystals change nearly lineally with their diameter but in different slopes. The ratio of integrated PL intensities between red and green bands (R/G) of individual microcrystals can be modulated by the crystal geometry, which is attributed to the optical propagation path and optical loss coefficient α. PL emission mapping along the crystal surface reveals a typical characteristic of optical waveguide in our UC microcrystals. Importantly, the variation of anisotropy in (100) and (001) crystal plane influences the UC PL spectra in the single microcrystals. Our finding could help the basic understanding of UC luminescence in micro/nanocrystals and hint their optimized fabrication for enhanced light emission. |
| first_indexed | 2024-12-11T07:57:29Z |
| format | Article |
| id | doaj.art-942d82ae07df4a068bb6ce4d39d1778b |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-11T07:57:29Z |
| publishDate | 2017-02-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-942d82ae07df4a068bb6ce4d39d1778b2022-12-22T01:15:12ZengAIP Publishing LLCAIP Advances2158-32262017-02-0172025009025009-710.1063/1.4977020036702ADVGeometry modulated upconversion photoluminescence of individual NaYF4: Yb3+, Er3+ microcrystalsBing Wang0Jiao Wang1Yongfeng Mei2Department of Materials Science, Fudan University, Shanghai 200433, People’s Republic of ChinaDepartment of Materials Science, Fudan University, Shanghai 200433, People’s Republic of ChinaDepartment of Materials Science, Fudan University, Shanghai 200433, People’s Republic of ChinaUpconversion (UC) photoluminescence (PL) properties of individual β-NaYF4: Yb3+, Er3+ microcrystals are investigated on their crystal orientation and size by a confocal micro-photoluminescence (μ-PL) system. The UC PL intensities including red and green bands of individual microcrystals change nearly lineally with their diameter but in different slopes. The ratio of integrated PL intensities between red and green bands (R/G) of individual microcrystals can be modulated by the crystal geometry, which is attributed to the optical propagation path and optical loss coefficient α. PL emission mapping along the crystal surface reveals a typical characteristic of optical waveguide in our UC microcrystals. Importantly, the variation of anisotropy in (100) and (001) crystal plane influences the UC PL spectra in the single microcrystals. Our finding could help the basic understanding of UC luminescence in micro/nanocrystals and hint their optimized fabrication for enhanced light emission.http://dx.doi.org/10.1063/1.4977020 |
| spellingShingle | Bing Wang Jiao Wang Yongfeng Mei Geometry modulated upconversion photoluminescence of individual NaYF4: Yb3+, Er3+ microcrystals AIP Advances |
| title | Geometry modulated upconversion photoluminescence of individual NaYF4: Yb3+, Er3+ microcrystals |
| title_full | Geometry modulated upconversion photoluminescence of individual NaYF4: Yb3+, Er3+ microcrystals |
| title_fullStr | Geometry modulated upconversion photoluminescence of individual NaYF4: Yb3+, Er3+ microcrystals |
| title_full_unstemmed | Geometry modulated upconversion photoluminescence of individual NaYF4: Yb3+, Er3+ microcrystals |
| title_short | Geometry modulated upconversion photoluminescence of individual NaYF4: Yb3+, Er3+ microcrystals |
| title_sort | geometry modulated upconversion photoluminescence of individual nayf4 yb3 er3 microcrystals |
| url | http://dx.doi.org/10.1063/1.4977020 |
| work_keys_str_mv | AT bingwang geometrymodulatedupconversionphotoluminescenceofindividualnayf4yb3er3microcrystals AT jiaowang geometrymodulatedupconversionphotoluminescenceofindividualnayf4yb3er3microcrystals AT yongfengmei geometrymodulatedupconversionphotoluminescenceofindividualnayf4yb3er3microcrystals |