Thermally stable and tunable broadband near-infrared emission from NIR-I to NIR-II in Bi-doped germanate glass for smart light sources

Chen, Weiwei; Huang, Xiongjian; Qi-wu, Dong; Zhou, Zhihao; Xiong, Puxian; Le, Yakun; Song, Enhai; Qiu, Jianrong; Yang, Zhongmin; Dong, Guoping

doi:10.1039/d2tc04890f

Cited by 8 publications

(3 citation statements)

References 61 publications

(80 reference statements)

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“…The collected NIR photons gradually weaken as the thickness of the chicken breast increases because O─H and C─H in meat tissue have strong absorption in the 960, 1200, and 1400 nm regions. [ 22 ] The detailed experimental process and results are presented in the Supporting Information. These results not only show that the simple NIR light source devices constructed using the fabricated Te cluster‐activated photonic material facilitates imaging in night vision and shallow tissues but also provides a new opportunity for the development of a new generation of white light pumpable NIR light sources.…”

Section: Resultsmentioning

confidence: 99%

Subnano Te Cluster in Glass for Efficient Full‐Spectrum Conversion

Dong,

Zhang,

Huang

et al. 2023

Advanced Science

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Broadband near‐infrared (NIR) photonic materials have wide applications. Although extensive studies on rare‐earth, transition‐metal, and even semiconductor‐activated materials have enabled the development of a rich NIR material pool, developing broadband and efficient photonic candidates covering the NIR I and II regions from 750 to 1500 nm has been met with limited success. Here, it is reported that a subnano Te cluster with a characteristic configuration different from that of the ion state may fill the aforementioned gap. Further, a strategy is proposed for the in situ generation and stabilization of Te clusters by tuning the cluster evolution in glass. A novel active photonic glass embedded with a Te cluster is fabricated; it exhibits intense and broadband short‐wave NIR luminescence with a central wavelength at 1030 nm and a bandwidth exceeding 330 nm. Interestingly, the glass exhibited a full visible‐spectrum conversion ability from 300 to 800 nm. The application of this unique broadband excitation feature for night vision and tissue penetration is demonstrated using a smartphone as the excitation source. These findings demonstrate a fundamental principle of cluster design in glass for creating new properties and provide a new direction for developing novel cluster‐derived functional composite materials.

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Section: Resultsmentioning

confidence: 99%

Subnano Te Cluster in Glass for Efficient Full‐Spectrum Conversion

Dong,

Zhang,

Huang

et al. 2023

Advanced Science

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“…Due to the intense optical response of CCD in the NIR region, it is widely used in the NIR imaging field including night vision and medical imaging diagnosis. [12][13]15,[149][150][151][152] NIR luminescent materials initially used for night vision were mainly semiconductor chips. However, due to their sharp emission spectra (FWHM < 50 nm), it was difficult to meet the increasingly high imaging resolution requirements.…”

Section: Nir Imagingmentioning

confidence: 99%

Main Group Elements Activated Near‐Infrared Photonic Materials

Dong,

Feng,

Qiu

et al. 2024

Laser & Photonics Reviews

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Near‐infrared (NIR) photonic materials find extensive applications across important fields such as telecommunications, laser radar, and atmospheric remote sensing. In particular, photonic materials activated by main group elements, which exhibit unique spectral features including ultra‐broadband tunable luminescence and long lifetime, have become rising stars in NIR emitting dopants. In this review, the energy level characteristics of the p‐electrons to gain insight into the fundamentals of the NIR optical response from the main group elements are first introduced. Next, the NIR luminescence properties of the main group elements are discussed. Then, the strategy for the design of main group elements activated materials with the desired properties based on local chemical environment engineering is proposed. In addition, recent advances in the applications of main group element (excluding bismuth) activated materials are highlighted. Furthermore, the key scientific issues that urgently need to be solved for such materials, such as the detailed luminescence mechanism are highlighted. Anticipation also extends to the future research trends in this exciting field, including the ways for enhancing luminescence efficiency and extending spectral region, and the efforts for implementing these advancements in novel cutting‐edge technologies like photovoltaics and biomedicine.

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“…Persistent luminescence (PersL) refers to the phenomenon where a material continues to emit light after the excitation source has been removed [1]. PersL is applied in many fields, such as anti-counterfeiting [2,3], information storage [4][5][6][7][8], thermal sensors [9], lighting [10][11][12][13][14][15] and imaging [16][17][18][19]. In terms of imaging, the development of nanoprobes that can emit deep-red or near-infrared (NIR) light has attracted the attention of the scientific community [20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Elaboration Method on Structural and Optical Properties of Zn1.33Ga1.335Sn0.33O4:0.5%Cr3+ Persistent Luminescent Nanomaterials

et al. 2023

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Near-infrared (NIR) persistent luminescence (PersL) materials have demonstrated promising developments for applications in many advanced fields due to their unique optical properties. Both high-temperature solid-state (SS) or hydrothermal (HT) methods can successfully be used to prepare PersL materials. In this work, Zn1.33Ga1.34Sn0.33O4:0.5%Cr3+ (ZGSO:0.5%Cr3+), a newly proposed nanomaterial for bioimaging, was prepared using SS and HT methods. The results show the crystal structure, morphology and optical properties of the samples that were prepared using both methods. Briefly, the crystallite size of the ZGSO:0.5%Cr3+ prepared using the SS method is ~3 µm, and as expected, is larger than materials prepared using the HT method. However, the growth process used in the hydrothermal environment promotes the formation of ZGSO:0.5%Cr3+ with more uniform shapes and smaller sizes (less than 500 nm). Different diameter ranges of nanoparticles were obtained using HT and ball milling (BM) methods (ranging from 25–50 nm) and by using SS and BM methods (25–200 nm) as well. In addition, the SS-prepared microstructure material has stronger PersL than HT-prepared particles before they go through ball milling to create nanomaterials. On the contrary, after BM treatment, ZGSO:0.5%Cr3+ HT and BM NPs present higher PersL and photoluminescence (PL) properties than ZGSO:0.5%Cr3+ SS and BM NPs, even though both kinds of NPs present worse PersL and PL compared to the original particles before BM. To summarize: preparation methods, whether by SS or HT, with additional grinding as a second step, can have a significant impact on the morphological and luminescent features of ZGSO:0.5%Cr3+ PersL materials.

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Thermally stable and tunable broadband near-infrared emission from NIR-I to NIR-II in Bi-doped germanate glass for smart light sources

Abstract: The rapid development of near-infrared (NIR) spectroscopic techniques has greatly facilitated the exploration of novel broadband NIR-emitting materials as advanced smart NIR light sources. However, the pursuit of high-efficiency and...

Cited by 8 publications

References 61 publications

Subnano Te Cluster in Glass for Efficient Full‐Spectrum Conversion

Subnano Te Cluster in Glass for Efficient Full‐Spectrum Conversion

Main Group Elements Activated Near‐Infrared Photonic Materials

Effect of the Elaboration Method on Structural and Optical Properties of Zn1.33Ga1.335Sn0.33O4:0.5%Cr3+ Persistent Luminescent Nanomaterials

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