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Mechanochemical Synthesis and Temperature‐Dependent Optical Properties of Thermochromic (Ag 1− x Cu x ) 2 HgI 4
Author(s) -
Maji Krishnendu,
Acharyya Paribesh,
Satapathy Pragnya,
Prasad S. Krishna,
Biswas Kanishka
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201900716
Subject(s) - thermochromism , photoluminescence , materials science , absorption spectroscopy , transition temperature , analytical chemistry (journal) , spectroscopy , melting temperature , solid solution , crystallography , chemistry , optics , optoelectronics , metallurgy , condensed matter physics , organic chemistry , superconductivity , quantum mechanics , composite material , physics
Thermochromic materials are generally synthesized via high‐temperature melting reaction or solution‐based synthesis. Herein, all‐inorganic thermochromic compounds of (Ag 1− x Cu x ) 2 HgI 4 were synthesized by solvent‐free simple and scalable mechanochemical grinding at room temperature. Temperature‐dependent electronic absorption spectroscopy along with DSC analysis confirmed the thermochromic events within these materials, and the phase transition temperature varied with solid solution compositions. The photoluminescence (PL) spectra is red‐shifted with the increase in the Cu content in (Ag 1− x Cu x ) 2 HgI 4 ( x= 0–1).