Ultrasensitive optical thermometer based on abnormal thermal quenching Stark transitions operating beyond 1500nm

doi:10.1111/jace.17981

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	Ultrasensitive optical thermometer based on abnormal thermal quenching Stark transitions operating beyond 1500nm
	G. Xiang; M. Yang; Q. Xia; S. Jiang; Y. Wang; X. Zhou; L. Li; L. Ma; X. Wang and J. Zhang
刊名	Journal of the American Ceramic Society
	2021
卷号	104 期号:11 页码:5784-5793
ISSN号	27820
DOI	10.1111/jace.17981
英文摘要	Light with wavelength longer than 1500nm has great potential to afford deep bio-tissue penetration due to its extremely weak photon scattering and undetectable autofluorescence in vivo. Here, in order to satisfy the requirements for thermometry during the tumor hyperthermia process, an ultrasensitive optical thermometer operating beyond 1500nm is developed by employing the thermally coupled Stark sublevels of Er3+: 4I13/24I15/2 transition based on fluorescence intensity ratio (FIR) technology in Yb3+ and Er3+ codoped BaY2O4. Compared with the typical upconversion (UC) material -NaYF4: Yb3+/Er3+ and Y2O3: Yb3+/Er3+, BaY2O4: Yb3+/Er3+ shows more intense red Er3+: 4F9/24I15/2 transition and 1.5m near-infrared (NIR) Er3+: 4I13/24I15/2 transition induced by its larger phonon energy and higher quenching concentration of Er3+. An equivalent four-level model is proposed to investigate the temperature characteristics of the NIR emission, from which four Stark transitions are separated from the raw spectra, named , , , and respectively. Then, the NIR thermal sensing performance have been developed by utilizing the FIR of I to I and I to I. More importantly, an ultra-high sensitivity for optical thermometry has been obtained through the combination of transition and , especially in the physiological temperature region. Furthermore, the detection depth of NIR light in bio-tissues is assessed by an ex vivo test, demonstrating that the maximal detection depth of NIR emission can reach to 8mm without any influence on optical thermometry. These findings indicate that Yb3+ and Er3+ codoped BaY2O4 is a remarkable contender for optical thermometry in deep tissue with ultra-high sensitivity. 2021 The American Ceramic Society
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内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/65732]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	G. Xiang,M. Yang,Q. Xia,et al. Ultrasensitive optical thermometer based on abnormal thermal quenching Stark transitions operating beyond 1500nm[J]. Journal of the American Ceramic Society,2021,104(11):5784-5793.
APA	G. Xiang.,M. Yang.,Q. Xia.,S. Jiang.,Y. Wang.,...&X. Wang and J. Zhang.(2021).Ultrasensitive optical thermometer based on abnormal thermal quenching Stark transitions operating beyond 1500nm.Journal of the American Ceramic Society,104(11),5784-5793.
MLA	G. Xiang,et al."Ultrasensitive optical thermometer based on abnormal thermal quenching Stark transitions operating beyond 1500nm".Journal of the American Ceramic Society 104.11(2021):5784-5793.