Broadening and enhancing emission of Cr3+ simultaneously by co-doping Yb3+ in Ga1.4In0.6SnO5

Zhao, Shuang; Mu, Zhongfei; Lou, Lulu; Yuan, Shuhan; Liao, Min; Lin, Qiuming; Zhu, Daoyun; Wu, Fugen

doi:10.1016/j.jre.2022.10.012

Cited by 11 publications

(3 citation statements)

References 44 publications

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“…The sublevels of 2F 5/2 are due to Stark splitting, which arises from the crystal field and asymmetry surrounding the Yb 3+ ions [99], giving rise to the emission at 1115 nm. The emission and peak broadening potentiality of the Yb 3+ ions in the NIR domain extending between 930 nm and 1300 nm has been reported in the Cr 3+ /Yb 3+ co-doped phosphors [100].…”

Section: Nir Emissionmentioning

confidence: 84%

Structural and optical investigations of RE³⁺: Yb, Er, Sm, Nd, Ce-doped multi-functional silica glasses for photonic applications

Yasmin,

Geetha

2024

J. Phys. D: Appl. Phys.

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The influence of various trivalent lanthanides was investigated in the silica phosphate multi-component glass matrix, synthesized by the sol-gel method. The prepared glasses were analyzed to explore the degree of bandwidth amplification for telecommunication systems, and the potentiality of lasing media and smart glass films. Alkaline earth metal ions of Ca2+ were effectuated as a glass modifier, mediating the formation of non-bridging oxygen with the glass formers, and imputing favorable structural attributes to the glasses for versatile applications. The bonding parameter derived from the average nephelauxetic ratio implies covalency around the rare earth ion sites in the Er3+ and Nd3+ doped systems, while the Sm3+ doped glass exhibits ionicity. In the silica-based glass matrix singly doped with Yb3+, the coexistence of Yb3+/ Yb2+ ions was evidenced. Transitions across 4f14 and 4f135d levels of Yb2+, with an experimental lifetime of 45.8 ns would provide prospective pulsed yellow lasers, for non-invasive therapeutics. Er3+ doped glass evinced a large bandwidth of 93.775 nm at 1477 nm and a high quantum efficiency of 97%, favorable for O+E+S-band telecommunication networks. The transition corresponding to 4G_(5/2)→6H_(7/2) of Sm3+ and 2G_(7/2)→4I_(9/2) of Nd3+ is suggestive that the respective doped glasses could be devised into solid-state red and green laser sources. Novel NIR emission at 1476 nm was also evidenced in the Sm3+ and Nd3+ doped systems. Prominent absorption at 280 nm and complete transparency in the visible region observed in the Ce3+ mono-doped system make it ideal for smart glasses as UVB and UVC shielding films.

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Section: Nir Emissionmentioning

confidence: 84%

Structural and optical investigations of RE³⁺: Yb, Er, Sm, Nd, Ce-doped multi-functional silica glasses for photonic applications

Yasmin,

Geetha

2024

J. Phys. D: Appl. Phys.

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“…One approach to broaden the NIR emission involves co-doping Cr 3+ ions with other rare earth ions. [8] For example, Xiang et al introduced the Yb 3+ in Ca 4 ZrGe 3 O 12 :Cr 3+ phosphor, resulting in a broadened FWHM ranging from 160 to 230 nm through efficient energy transfer (ET) between the two photoluminescent centers. [9] Wang et al introduced Yb 3+ into Sc 2 O 3 phosphors with coexisting Cr 3+ and Cr 4+ to bridge the spectral gap located at 1000 nm, resulting in NIR ultrawideband (UWB) emission from 650 to 1600 nm, however, this approach is still limited by its low efficiency and unstable spectra at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…One approach to broaden the NIR emission involves co‐doping Cr 3+ ions with other rare earth ions. [ 8 ] For example, Xiang et al. introduced the Yb 3+ in Ca 4 ZrGe 3 O 12 :Cr 3+ phosphor, resulting in a broadened FWHM ranging from 160 to 230 nm through efficient energy transfer (ET) between the two photoluminescent centers.…”

Section: Introductionmentioning

confidence: 99%

Cr³⁺‐Cr³⁺ Ion Pair Induced Fast Energy Migration in Cr³⁺ Doped Na‐β‐Al₂O₃ Ultra‐Wide Near‐Infrared Phosphors for NIR Spectroscopy Application

Pang,

Wang,

Yan

et al. 2023

Laser & Photonics Reviews

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Technological progress has promoted the development of ultra‐wide near‐infrared (NIR) luminescent materials as a new NIR light source. The ultra‐wide near‐infrared (NIR) emission in Na(Al,Ga)11O17:xCr3+(NAGO:xCr3+) phosphors is achieved by constructing unique Cr3+‐Cr3+ion pair confined structure. The Cr3+‐Cr3+ ion pairs can be observed at a low concentration of Cr3+ ions(x = 0.04), the increase of Ga3+ ion would promote the formation of Cr3+‐Cr3+ ion pairs, thereby effectively enhancing the energy migration process from high‐energy Cr3+ ions to low‐energy Cr3+ ones. Herein, the full width at half maximum can be finely adjusted in a wide range from 17 to 223 nm, while the emission peaks can shift from 704 to 860 nm. NAGO:xCr3+ exhibits the longest‐wavelength emission in the known Cr3+‐doped galliates and aluminates phosphors. The study further reveals the inherent mechanism of affect on the photoluminescence properties for Cr3+‐Cr3+ ion pairs. The quantum efficiency of optimal NaAl11O17:0.004Cr3+ (sharp emission) and NaGa11O17:0.02Cr3+(ultra‐wide emission) samples reaches 87.6% and 46.6% with high thermal stability (84.47% and 67.52%@150 °C), respectively. The comprehensive properties are excellent among known phosphors with similar property. Multifunctional applications of NAGO:xCr3+ in agricultural production, quality inspection, and imaging fields are also demonstrated.

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Super Broadband Emission Across NIR‐I and NIR‐II Under Blue Light Excitation of Cr³⁺, Ni²⁺ Co‐Doped Sr₂GaTaO₆ Phosphor Achieved by Two‐Site Occupation and Effective Energy Transfer

Zhuo,

Wu,

Niu

et al. 2024

Laser & Photonics Reviews

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The performance of the near‐infrared phosphor‐converted light‐emitting diodes (NIR pc‐LEDs) mainly depends on the NIR emitting phosphors used. Cr3+ doped materials can be excited by blue light chips, but their emission is located in the NIR‐I region (650–1000 nm). Ni2+ doped materials are mainly located in the NIR‐II region (1000–1700 nm), but they cannot be effectively excited by blue light chips. Herein, Cr3+, Ni2+ mono‐doped, and co‐doped Sr2GaTaO6 NIR emitting phosphors are prepared and investigated. Cr3+ and Ni2+ ions occupy two octahedral sites of Ga3+ and Ta5+. The co‐doping of Cr3+ ions has achieved two breakthroughs. One is to shift the optimal excitation wavelength from violet light to blue light due to the energy transfer (efficiency up to 70%) from Cr3+ to Ni2+. The other is to achieve the broadband and continuous emission across NIR‐I and NIR‐II regions (650–1700 nm, with a full width at half maximum (FWHM) of 410 nm (173 nm + 237 nm)). The prepared Sr2GaTaO6: 0.02Cr3+, 0.01Ni2+ phosphor is combined with a commercial 460 nm blue chip to realize its application in organic compounds identification, night vision, and biological imaging. This work points out a direction for the future development of efficient super broadband NIR‐emitting phosphors.

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Broadening and enhancing emission of Cr3+ simultaneously by co-doping Yb3+ in Ga1.4In0.6SnO5

Cited by 11 publications

References 44 publications

Structural and optical investigations of RE³⁺: Yb, Er, Sm, Nd, Ce-doped multi-functional silica glasses for photonic applications

Structural and optical investigations of RE³⁺: Yb, Er, Sm, Nd, Ce-doped multi-functional silica glasses for photonic applications

Cr³⁺‐Cr³⁺ Ion Pair Induced Fast Energy Migration in Cr³⁺ Doped Na‐β‐Al₂O₃ Ultra‐Wide Near‐Infrared Phosphors for NIR Spectroscopy Application

Super Broadband Emission Across NIR‐I and NIR‐II Under Blue Light Excitation of Cr³⁺, Ni²⁺ Co‐Doped Sr₂GaTaO₆ Phosphor Achieved by Two‐Site Occupation and Effective Energy Transfer

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Broadening and enhancing emission of Cr3+ simultaneously by co-doping Yb3+ in Ga1.4In0.6SnO5

Cited by 11 publications

References 44 publications

Structural and optical investigations of RE3+: Yb, Er, Sm, Nd, Ce-doped multi-functional silica glasses for photonic applications

Structural and optical investigations of RE3+: Yb, Er, Sm, Nd, Ce-doped multi-functional silica glasses for photonic applications

Cr3+‐Cr3+ Ion Pair Induced Fast Energy Migration in Cr3+ Doped Na‐β‐Al2O3 Ultra‐Wide Near‐Infrared Phosphors for NIR Spectroscopy Application

Super Broadband Emission Across NIR‐I and NIR‐II Under Blue Light Excitation of Cr3+, Ni2+ Co‐Doped Sr2GaTaO6 Phosphor Achieved by Two‐Site Occupation and Effective Energy Transfer

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Structural and optical investigations of RE³⁺: Yb, Er, Sm, Nd, Ce-doped multi-functional silica glasses for photonic applications

Structural and optical investigations of RE³⁺: Yb, Er, Sm, Nd, Ce-doped multi-functional silica glasses for photonic applications

Cr³⁺‐Cr³⁺ Ion Pair Induced Fast Energy Migration in Cr³⁺ Doped Na‐β‐Al₂O₃ Ultra‐Wide Near‐Infrared Phosphors for NIR Spectroscopy Application

Super Broadband Emission Across NIR‐I and NIR‐II Under Blue Light Excitation of Cr³⁺, Ni²⁺ Co‐Doped Sr₂GaTaO₆ Phosphor Achieved by Two‐Site Occupation and Effective Energy Transfer