%0 Journal Article
%A Shahi, Praveen Kumar
%A Singh, Akhilesh Kumar
%A Singh, Sunil
Kumar
%A Rai, Shyam Bahadur
%A Ullrich, Bruno
%D 2015
%T Revelation
of the Technological Versatility of the Eu(TTA)3Phen Complex
by Demonstrating Energy Harvesting, Ultraviolet Light Detection, Temperature
Sensing, and Laser Applications
%U https://acs.figshare.com/articles/journal_contribution/Revelation_of_the_Technological_Versatility_of_the_Eu_TTA_sub_3_sub_Phen_Complex_by_Demonstrating_Energy_Harvesting_Ultraviolet_Light_Detection_Temperature_Sensing_and_Laser_Applications/2137534
%R 10.1021/acsami.5b06350.s001
%2 https://acs.figshare.com/ndownloader/files/3771370
%K sunlight exposure
%K material choice
%K emission peak
%K TTA
%K emission studies
%K Energy Harvesting
%K Eu
%K poly
%K laser architectures
%K emission intensity changes
%K temperature range
%K emission amplification
%K Laser ApplicationsWe
%K energy transfer
%K Phen ligands
%K Ultraviolet Light Detection
%K UV light
%K Technological Versatility
%K excitation causes
%X We synthesized the Eu(TTA)3Phen complex and present herein a detailed study of its photophysics.
The investigations encompass samples dispersed in poly(vinyl alcohol)
and in ethanol in order to explore the versatile applicability of
these lanthanide-based materials. Details upon the interaction between
Eu, TTA, and the Phen ligands are revealed by Fourier transform infrared
and UV–visible absorption, complemented by steady state and
temporally resolved emission studies, which provide evidence of an
efficient energy transfer from the organic ligands to the central
Eu3+ ion. The material produces efficient emission even
under sunlight exposure, a feature pointing toward suitability for
luminescent solar concentrators and UV light sensing, which is demonstrated
for intensities as low as 200 nW/cm2. The paper further
promotes the complex’s capability to be used as luminescence-based
temperature sensor demonstrated by the considerable emission intensity
changes of ∼4.0% per K in the temperature range of 50–305
K and ∼7% per K in the temeperature range 305–340 K.
Finally, increasing the optical excitation causes both spontaneous
emission amplification and emission peak narrowing in the Eu(TTA)3Phen complex dispersed in poly(vinyl alcohol) - features indicative
of stimulated emission. These findings in conjunction with the fairly
large stimulated emission cross-section of 4.29 × 10–20 cm2 demonstrate that the Eu(TTA)3Phen complex
dispersed in poly(vinyl alcohol) could be a very promising material
choice for lanthanide-polymer based laser architectures.
%I ACS Publications