文章信息/Info

Title:

Preparation and Temperature Sensing Performance Study of K3InF6:Er3+,Yb3+ Up-Conversion Uminescent Materials with Double Perovskite Structure

文章編號:

1674-3962(2024)12-1118-07

作者:

李敬遠; 劉欣; 劉勝杰

1中國人民解放軍第一二〇五工廠,北京 100088 2中國人民解放軍第32022部隊,武漢 430079

Author(s):

LI Jingyuan; LIU Xin; LIU Shengjie

1.The 1205 Plant of PLA, Beijing 100088; 2. The Unit 32022 of PLA Beijing Wuhan 430079;

關鍵詞:

上轉換; 雙鈣鈦礦結構; 熒光強度比; 稀土摻雜; 溫度傳感

Keywords:

up-conversion;  double perovskite structure;  fluorescence intensity ratio;  rare earth doping;  temperature sensing

分類號:

TQ422

DOI:

10.7502/j.issn.1674-3962.202306030

文獻標志碼:

A

摘要:

雙鈣鈦礦結構化合物因具有聲子能量低、易于稀土離子摻雜、物理化學性質穩定等優勢而受到廣泛關注。為獲得新型溫敏上轉換材料，通過高溫固相法合成了一系列雙鈣鈦礦結構上轉換發光材料K3InF6:Er3+,Yb3+。此外，采用X射線粉末衍射儀（XRD）、場發射掃描電鏡（FE-SEM）和熒光光譜儀（PL）分別對其成分、結構和發光性能進行了系統表征。結果表明制備的上轉換發光材料均為雙鈣鈦礦結構，在980 nm激光激發下，樣品可發出明亮的綠光。當Er3+和Yb3+摻雜物質的量的比分別為0.05和0.25時，樣品上轉換發光強度最大。同時，通過測量變功率的上轉換發光光譜,詳細討論了樣品中所涉及的上轉換發光機理。基于熒光強度比(FIR)技術還研究了樣品在303～573 K范圍內的溫度傳感性能，當溫度為483 K時，取得的最大絕對靈敏度為9.5×10-3 K-1。所有結果表明，K3InF6:Er3+,Yb3+上轉換發光材料具有較高的靈敏度，在溫度傳感領域具有廣闊的應用前景。

Abstract:

Double perovskite compounds have attracted wide attention due to the advantages of low phonon energy, easy doping with rare earth ions, and stable physicochemical properties. To obtain novel temperature-sensitive up�瞔onversion materials, a series of up-conversion luminescent materials K3InF6:Er3+,Yb3+ with double perovskite structure were synthesized by high�瞭emperature solid-phase method in this paper. In addition, the composition, structure and luminescence properties were systematically characterized by X�瞨ay powder diffractometer (XRD), field emission scanning electron microscope (FE-SEM) and fluorescence spectrometer (PL), respectively. The results show that the prepared up-conversion luminescent materials are all double perovskite structure, and the samples emit bright green light under 980 nm laser excitation, and the up-conversion luminescence intensity of the samples is maximized when the ratio of amounts of Er3+ and Yb3+ are 0.05 and 0.25, respectively. Meanwhile, the up-conversion luminescence mechanism involved in the samples is discussed in detail by measuring the up-conversion luminescence spectra of variable power. The temperature sensing performance of the samples in the range of 303 to 573 K was also investigated based on the fluorescence intensity ratio (FIR) technique, and a maximum absolute sensitivity of 9.5×10-3 K-1 was obtained when the temperature was 483 K. All the results indicate that K3InF6:Er3+,Yb3+ up-conversion luminescent material has high sensitivity and has a promising application in the field of temperature sensing.