Strong red up-conversion in Er3+ doped zinc oxide powder prepared by fluoride salt decomposition method

Xiao, Siguo; Yang, Xiaoliang; Liu, Zhengwei; Yan, Xiaohong

doi:10.1016/j.optmat.2004.12.016

Cited by 13 publications

(11 citation statements)

References 17 publications

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“…The percentage of the red emission in whole emission intensity is equal to 67.65% in A13 and 99.23% in H13, respectively. The value of H13 is higher than the Yb 3+ undoped red UC materials reported in the literature (<95.3%) [15]. Fig.…”

Section: Methodsmentioning

confidence: 53%

“…It must be pointed out for H13 that the violet emission was not detected under our detection limit, while the green emission was detected to be very weak (the inten- sity ratio of green to red emission: 1/129). The single red-band emission has been reported in ZnO:Er 3+ powder [15]. But, the mechanism leading to the single red-band emission in the heattreated Er 3+ /Yb 3+ codoped ZnF 2 -PbF 2 -B 2 O 3 should be different from that in ZnO:Er 3+ , due to a fact that Yb 3+ ion involved in the upconversion process in the heat-treated Er 3+ /Yb 3+ codoped ZnF 2 -PbF 2 -B 2 O 3 crystallites.…”

Section: Methodsmentioning

confidence: 96%

“…Recently, Er 3+ doped materials emitting single-band red UC light under the excitation of infrared 980 nm laser received much attention [13][14][15], which have high thermal and mechanical stability, narrow emission band, and high fluorescence intensity. On the other hand, it is well known to chemists that the excitation photons leading to the photochemical reaction have the energy between 1.5 and 3.5 eV.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the reported Er 3+ doped materials emitting singleband red UC light are single-phase crystallites [13][14][15], while the multi-phase configurations were considered to be less sta- ble than the single-phase. However, a series of our trivial experiments confirmed that the complex multi-phase configurations provide a more expansive range for improving the UC intensity and adjusting the bandwidth of the red UC light than the simple single-phase configuration.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Relationship between microstructure and the achieving of the single-band red upconversion fluorescence of Er3+/Yb3+ codoped crystallites

Liu¹,

Yang²,

Ren³

et al. 2009

Journal of Alloys and Compounds

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Section: Methodsmentioning

confidence: 53%

Section: Methodsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Relationship between microstructure and the achieving of the single-band red upconversion fluorescence of Er3+/Yb3+ codoped crystallites

Liu¹,

Yang²,

Ren³

et al. 2009

Journal of Alloys and Compounds

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“…Therefore, it is very important to improve their upconversion efficiency. There are many factors affecting the upconversion efficiency, such as the local environment, the dopant concentration, and the distribution of active ions in host materials [18] . A recent study has reported that the luminescence intensity can be enhanced by changing the local environment of luminescent centers, which can be performed by doping some suitable inactive ions in the host.…”

mentioning

confidence: 99%

Enhancement of upconversion luminescence of YAlO3: Er3+ by Gd3+ doping

Li¹,

Bao-shu²,

Xing³

et al. 2012

中国光学快报

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The upconversion luminescences of YAlO3:Er 3+ phosphor co-doping with different Gd 3+ concentrations are investigated under the excitation of 980-and 532-nm diode lasers. A near ultraviolet upconversion emission at 410 nm is observed in YAlO3 under 532-nm excitation. Moreover, the inactive Gd 3+ ions can improve the upconversion intensity efficiently in a certain range of concentration. Under 980-nm excitation, the visible upconversion emissions at 546 and 646 nm are enhanced by about 10 and 8 times at the Gd 3+ concentration of 40%, respectively. The upconversion emission at 410 nm under 532-nm excitation is also enhanced by 7 times. The substitution of Gd 3+ ions for Y 3+ sites changes the local symmetry of Er 3+ , leading to the improvement of upconversion efficiency.OCIS codes: 160.5690, 160.4670, 160.4760. doi: 10.3788/COL201210.081602.In the last several decades, the upconversion luminescence of rare-earth-ion-doped materials has been investigated extensively due to their wide applications in solid-state lasers, flat panel displays, biological labeling, and so on [1−3] . Er 3+ has been reported as one of the most popular and efficient ions for upconversion [4−8] . It can provide several intermediate levels with long life time, which can be directly pumped by several diode lights [9−14] . Recently, upconversion phenomena in Er 3+ -doped YAlO 3 crystals have been widely studied because of their high mechanical hardness and considerable thermal conductivity, among others. Several authors have reported upconversion luminescence in Er 3+ -doped YAlO 3 under 518-, 542.4-, 548.9-, 652.2-, and 980-nm excitations [10,15−17] . Therefore, it is very important to improve their upconversion efficiency. There are many factors affecting the upconversion efficiency, such as the local environment, the dopant concentration, and the distribution of active ions in host materials [18] . A recent study has reported that the luminescence intensity can be enhanced by changing the local environment of luminescent centers, which can be performed by doping some suitable inactive ions in the host. , xGd 3+ (x=0, 0.15, 0.25, 0.4, 0.5, and 0.7) was prepared through a solution combustion synthesis procedure. An aqueous solution containing citric acid, Y(NO 3 ) 3 , Er(NO 3 ) 3 , and Gd(NO 3 ) 3 was used to synthesize the Er 3+ and Gd 3+ co-doped YAlO 3 powders. A citric acid-to-metal nitrate molar ratio of 1.5:1 was employed to prepare the precursor solution. After the combustion, the precursor was calcined at 1 100• C for 2 h. The powders were characterized by X-ray diffraction (XRD) on a Bruker D8 advanced equipment (x) using Cu tube with K α radiation of 0.15406 nm in the 2θ range of 20• -60• . The morphology of the prepared powders was observed by scanning electron microscopy (SEM) using JSM-6610. Upconversion luminescence spectra excited by 980-and 532-nm lasers were obtained in the spectrophotometer (R-500, Japan Spectroscopic Co., Japan). All the measurements were performed at room temperature. Figure 1 shows the representat...

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Pure red upconversion emission from Yb3Al5O12 phase doped with high Er3+ concentration

Yang

Ren

et al. 2010

Journal of Alloys and Compounds

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Strong red up-conversion in Er3+ doped zinc oxide powder prepared by fluoride salt decomposition method

Cited by 13 publications

References 17 publications

Relationship between microstructure and the achieving of the single-band red upconversion fluorescence of Er3+/Yb3+ codoped crystallites

Relationship between microstructure and the achieving of the single-band red upconversion fluorescence of Er3+/Yb3+ codoped crystallites

Enhancement of upconversion luminescence of YAlO3: Er3+ by Gd3+ doping

Pure red upconversion emission from Yb3Al5O12 phase doped with high Er3+ concentration

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