Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.1016/j.isci.2021.102250

Ключевые слова: inorganic chemistry, optical materials, photonics

Аннотация: Near-infrared (NIR) phosphor-converted light-emitting diode (pc-LED) has great potential in non-invasive detection, while the discovery of tunable broadband NIR phosphor still remains a challenge. Here, we report that Cr3+-activated LiIn2SbO6 exhibits a broad emission band ranging from 780 to 1400 nm with a full width at half maximum (FWHM) of 225 nm upon 492 nm excitation. The emission peaks are tuned from 970 to 1020 nm together with considerable broadening of FWHM (∼285 nm) via Li/Na substitution. Depending on Yb3+ co-doping, a stronger NIR fluorescence peak of Yb3+ appears with improved thermal resistance, which is ascribed to efficient energy transfer from Cr3+ to Yb3+. An NIR pc-LED package has been finally designed and demonstrated a remarkable ability to penetrate pork tissues (∼2 cm) so that the insertion depth of a needle can be observed, indicating that the phosphor can be applied in non-destructive monitoring. © 2021 The Author(s)Inorganic Chemistry; Optical Materials; Photonics © 2021 The Author(s)

Журнал: iScience

Выпуск журнала: Vol. 24, Is. 4

Номера страниц: 102250

ISSN журнала: 25890042

Издатель: Elsevier Inc.

• Liu Gaochao (South China Univ Technol, Sch Mat Sci & Engn, Guangdong Engn Technol Res & Dev Ctr Special Opt, State Key Lab Luminescent Mat & Devices,Guangdong, Guangzhou 510641, Guangdong, Peoples R China)
• Hu Tao (South China Univ Technol, Sch Mat Sci & Engn, Guangdong Engn Technol Res & Dev Ctr Special Opt, State Key Lab Luminescent Mat & Devices,Guangdong, Guangzhou 510641, Guangdong, Peoples R China)
• Molokeev Maxim S. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia; Kemerovo State Univ, Res & Dev Dept, Kemerovo 650000, Russia)
• Xia Zhiguo (South China Univ Technol, Sch Mat Sci & Engn, Guangdong Engn Technol Res & Dev Ctr Special Opt, State Key Lab Luminescent Mat & Devices,Guangdong, Guangzhou 510641, Guangdong, Peoples R China)

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