Fluorescence Lifetime-Based Luminescent Thermometry Material with Lifetime Varying over a Factor of 50

Abstract

Recently, the growing demand for temperature detection is pushing forward the flourishing development of noncontact optical thermometry. Herein, a new red phosphor Sr 2 InTa 1−x O 6 :xMn 4+ (SIT:xMn 4+ ) was first constructed and systematically investigated. Based on the fairly rapid decline of the lifetime from 0.403 to 0.008 ms by increasing the temperature from 25 to 450 K, a noncontact optical thermometer can be made from phosphor SIT:0.003Mn 4+ with S r = 1.396% K −1 at 375 K and S a = 0.0012 K −1 at 300 K. Because the luminescence is based on the outermost 3d orbits of Mn 4+ , the lifetime of SIT:xMn 4+ is quite sensitive to the temperature, leading to a rapid decline of the lifetime with the increase in temperature. Moreover, multiple rounds of variable-temperature studies were performed to demonstrate the stability and reversibility of SIT:0.003Mn 4+ . This work suggests that Mn 4+phosphors are promising candidates for application as optical thermometric material.

Structural Transformation and Photoluminescent Property of Manganese-Doped Bismuth-Based Perovskites

“…From Figure f, it can be seen that the S A and S R of CMBC have the same trend of increase and then a decrease. The S A and S R reach the maximum at 120 and 140–160 K with 0.0099 K –1 and 1.7 %K –1 , respectively, which possess higher sensitivity compared with CMBC (Figure S8) and other PL temperature measurement materials (Table S4), suggesting that CMBC has great promise for PL lifetime temperature measurement.…”

Remote temperature sensing in microelectronics: optical thermometry using dual-center phosphors

“…Luminescence thermometry relies on monitoring luminescent characteristics of temperature probes as thermometric indicators [21,22]. To date, emission intensity [23,24], peak position [25,26], bandwidth [27,28], lifetime [29,30], polarization [31,32] as well as luminescence intensity ratio [33,34] have been successfully utilized for reliable temperature detection. Analyzing published studies devoted to luminescent thermometry, one can conclude that the most frequently used thermometric indicator is luminescence intensity ratio due to its robustness to systematic errors associated with changes in excitation power, phosphor quantity or spatial distribution [11,35].…”

A plasmonic fluorescent ratiometric temperature sensor for self-limiting hyperthermic applications utilizing FRET enhancement in the plasmonic field

“…27,28 Other fluorescence properties like fluorescence lifetimes have also been used to follow temperature but are more cumbersome to measure than fluorescence intensity. 29,30 Rare earth dopants in rare earth compounds show transitions that are phonon coupled and change in intensity with a change in local temperature and these can be used to follow temperature. 31,32 Organic fluorophores that have temperature sensitive fluorescence like rhodamine B have also been used to follow temperature.…”