Efficient and thermally stable broadband near-infrared emission from near zero thermal expansion AlP3O9:Cr3+phosphors

Huang, Decai; He, Xiaoxiao; Zhang, Jingrong; Hu, J. F.; Liang, Sisi; Chen, Dejian; Xu, Kunyuan

doi:10.1039/d2qi00046f

Cited by 29 publications

(21 citation statements)

References 47 publications

(49 reference statements)

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“…Very recently, Zhu's group reported a new Cr 3+ ‐doped metaphosphate AlP 3 O 9 phosphor with a zero thermal expansion (ZTE) property. [ 61 ] This phosphor shows a good PL thermal stability (≈91%@150 °C). This ZTE property is beneficial for small PL TQ property.…”

Section: Different Types For Cr3+‐doped Phosphor Materialsmentioning

confidence: 99%

Recent Advances in Chromium‐Doped Near‐Infrared Luminescent Materials: Fundamentals, Optimization Strategies, and Applications

Dang

Wei

Liu

et al. 2022

Advanced Optical Materials

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Development of chromium-doped luminescent materials is pertinent to many emerging applications, ranging from agriculture, food industry to noninvasive health monitoring. The fundamental importance of chromium-activated luminescent materials in the field of optics and biomedicine makes the rapid development of novel materials and relevant applications. Herein, the recent advances on the luminescence principle and photoluminescence (PL) optimization for Cr 3+ -activated luminescent materials together with their potential applications are reviewed. The different types of most recently developed Cr 3+ -doped luminescent materials and the design principles are systematically summarized. The associations between crystal structure and nearinfrared (NIR) PL properties, as well as performance-evaluating parameters are introduced with the examples of known NIR emitting phosphors, which will be helpful to explore future NIR luminescent materials. Based on crystal field control, site engineering, and electron-phonon coupling, several efficient strategies for optimizing luminescence performances including bandwidth, thermal stability, and quantum efficiency of Cr 3+ -doped NIR luminescent materials are proposed. Then, potential applications in the fields of food analysis, night vision, information encryption, and optical sensors are surveyed. Finally, the challenges of promising Cr 3+ -doped luminescent materials are proposed.

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Section: Different Types For Cr3+‐doped Phosphor Materialsmentioning

confidence: 99%

Recent Advances in Chromium‐Doped Near‐Infrared Luminescent Materials: Fundamentals, Optimization Strategies, and Applications

Dang

Wei

Liu

et al. 2022

Advanced Optical Materials

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“…In recent years, the NIR spectroscopy technology has received great attention due to its broad applications in food detection, environmental monitoring, solar cells, and medical treatment. − NIR pc-LEDs, combining blue LED chips with NIR-emitting phosphors, are excellent candidates for such applications and superior to their counterparts, such as tungsten halogen lamps, as they have super-broad emission spectra, longer service life, lower cost, and smaller size. , As a key component in NIR pc-LEDs, NIR phosphors play an important role in regulating the spectrum, efficiency, and sensitivity of devices. , Recently, searching for highly efficient and broadband NIR phosphors has become a hot topic, and a variety of NIR phosphors have been reported. − …”

Section: Introductionmentioning

confidence: 99%

Screening of Broadband Near-Infrared Cr³⁺-Activated Phosphors Using Ce³⁺ as a Probe

et al. 2023

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Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) are ideal miniaturized NIR light sources, but it is still difficult to find broadband-emitting NIR phosphors due to the lack of appropriate material design principles. In this work, we propose a method to find hosts yielding broadband NIR Cr3+ emission by screening Ce3+-doped phosphor hosts for which both Ce3+ and Cr3+ can occupy the same crystallographic site. A NIR phosphor Ba3Sc4O9:Cr3+ (BSO:Cr3+) with an emission peak at 835 nm and a full width at half-maximum (FWHM) of 188 nm is obtained, where Ce3+ or Cr3+ is accommodated at the same Sc3+ site. The BSO:Cr3+ ceramic is demonstrated to produce a NIR emitter with an output power of 14.56 mW when driven by a blue laser diode at 5.0 V/100 mA. By following the proposed method, two broadband NIR phosphors composed of Li3Sc2(PO4)3:Cr3+ (λem = 1000 nm, FWHM = 223 nm) and Na3Sc2(PO4)3:Cr3+ (λem = 895 nm, FWHM = 184 nm) are further discovered.

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“…[ 14 ] In Lu 2 CaAl 4 SiO 12 :0.04Cr 3+ , the lifetime of the Cr 3+ ‐emission at 706 nm is 0.287 ms, which is close to these of the reports on the transition from the 4 T 2g . [ 15 ] However, the lifetime was extended by an order of magnitude (Figure 2d) when the Ca 2+ is replaced by Sr 2+ . The significant change in lifetime denotes that the transition of the Cr 3+ emission is different in the Lu 2 SrAl 4 SiO 12 :0.04Cr 3+ and Lu 2 CaAl 4 SiO 12 :0.04Cr 3+ .…”

Section: Resultsmentioning

confidence: 99%

“…The above results denote that the NIR‐LED prepared with Cr 3+ ‐doped Lu 2 SrAl 4 SiO 12 phosphor can be applied in imaging. [ 15b,27 ]…”

Section: Resultsmentioning

confidence: 99%

Enhanced Thermal Stability and Energy Transfer by Crystal‐Field Engineering in a Garnet Phosphor for Thermometry and NIR‐LED

Zhou

Lyu

Sun

et al. 2022

Advanced Optical Materials

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It is of significant importance to tailor the luminescent properties of Cr3+ ions as efficient near‐infrared (NIR) emitter for extended optical applications. Here, crystal field engineering is explored to tailor the luminescent properties of a Cr3+‐doped garnet, Lu2Ca1 ‐ xSrxAl4SiO12 (x = 0–1). As Ca2+ is substituted by Sr2+, the emission of Cr3+ becomes sharper with longer lifetime, indicating that the 2Eg→4A2g transition becomes dominant. More importantly, the thermal stability is greatly improved, as the emission intensity at 480 K increases from 83% to 111% of that at 300 K. Moreover, the efficiency of the energy transfer from the Cr3+ to Yb3+/Nd3+ increases from 60–70% to 80–90%. The intensity ratio of I810/I706 from the Lu2SrAl4SiO12:Cr3+,Nd3+ can be applied to thermometry, with the maximum relative sensitivity value of 1.43% K–1 at 303 K. Compared with the blue emission from light‐emitting diode (LED) chip, a clearer and more accurate imaging is established with NIR emission from Cr3+. Furthermore, the intensity ratio of the emissions from the Cr3+ and Yb3+ ions is applied to differentiate pork, chicken, and beef. These findings provide an avenue to optimize the thermal stability and energy transfer of Cr3+‐activated NIR emitters for the applications in thermometry and NIR‐LED.

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Efficient and thermally stable broadband near-infrared emission from near zero thermal expansion AlP₃O₉:Cr³⁺phosphors

Abstract: A near zero thermal expansion NIR phosphor, AlP3O9:Cr3+, with high emission efficiency and excellent thermal stability is synthesized. A compact NIR pc-LED is fabricated and has a promising application in advanced nondestructive analysis technology.

Cited by 29 publications

References 47 publications

Recent Advances in Chromium‐Doped Near‐Infrared Luminescent Materials: Fundamentals, Optimization Strategies, and Applications

Recent Advances in Chromium‐Doped Near‐Infrared Luminescent Materials: Fundamentals, Optimization Strategies, and Applications

Screening of Broadband Near-Infrared Cr³⁺-Activated Phosphors Using Ce³⁺ as a Probe

Enhanced Thermal Stability and Energy Transfer by Crystal‐Field Engineering in a Garnet Phosphor for Thermometry and NIR‐LED

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Efficient and thermally stable broadband near-infrared emission from near zero thermal expansion AlP3O9:Cr3+phosphors

Abstract: A near zero thermal expansion NIR phosphor, AlP3O9:Cr3+, with high emission efficiency and excellent thermal stability is synthesized. A compact NIR pc-LED is fabricated and has a promising application in advanced nondestructive analysis technology.

Cited by 29 publications

References 47 publications

Recent Advances in Chromium‐Doped Near‐Infrared Luminescent Materials: Fundamentals, Optimization Strategies, and Applications

Recent Advances in Chromium‐Doped Near‐Infrared Luminescent Materials: Fundamentals, Optimization Strategies, and Applications

Screening of Broadband Near-Infrared Cr3+-Activated Phosphors Using Ce3+ as a Probe

Enhanced Thermal Stability and Energy Transfer by Crystal‐Field Engineering in a Garnet Phosphor for Thermometry and NIR‐LED

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Product

Resources

About

Efficient and thermally stable broadband near-infrared emission from near zero thermal expansion AlP₃O₉:Cr³⁺phosphors

Screening of Broadband Near-Infrared Cr³⁺-Activated Phosphors Using Ce³⁺ as a Probe