@article{fa1251cef7e74d6cab4c18c0c6a64949,
title = "Near white light and near-infrared luminescence in perovskite Ga:LaCrO3",
abstract = "We report the realization of near-white light emission (near-WLE) and the selective tuning to the near-infrared (NIR) luminescence from Ga substituted lanthanum chromite perovskite with electron-beam excitation for the first time. The near-WLE in Cathodoluminescence (CL), arises from the combination of 4T1(F)→4A2(blue), 4T1(P)→4A2(green) and 4T2→4A2(red) spin allowed transitions and 2E→4A2 spin forbidden transitions from the Cr3+ ion. The spin allowed transitions from the Cr3+ ions is rare, however can be accomplished by adjusting the Cr3+/Ga3+ ion concentration in the host lattice. The NIR emission originates from the selective 2E→4A2 transition, which increases with the increasing concentration of Ga3+ions. Moreover, the Density Functional Theory (DFT) calculations point out the presence of extra electronic states in the NIR region with Ga substitution, which elucidates the observation of NIR emission in Ga substituted samples.",
keywords = "DFT, Near-white light, Optical properties, Perovskite",
author = "Rajalekshmi, {T. R.} and Vikash Mishra and Tejendra Dixit and Muralidhar Miryala and Rao, {M. S.Ramachandra} and K. Sethupathi",
note = "Funding Information: MSR would like to thank DST for the grant (Grant Nos. SR/NM/NAT/02–2005 and DST/NM/JIIT/01–2016) that led to the establishment of the Nano Functional Materials Technology Center. The paper was supported in part by Japan Student Services Organization (JASSO) for the Advanced Project Based Learning (aPBL), in part by Shibaura Institute of Technology (SIT) under the Top Global University Project, designed by the Ministry of Education, Culture, Sports, and Science and Technology in Japan. The authors are thankful to Prof. P.R.Sagdeo Indian Institute of Technology Indore, India for providing WIEN2k facility. VM sincerely thank to IIT Bombay for providing institute postdoctoral fellowship. Publisher Copyright: {\textcopyright} 2021 Acta Materialia Inc.",
year = "2022",
month = mar,
day = "15",
doi = "10.1016/j.scriptamat.2021.114449",
language = "English",
volume = "210",
journal = "Scripta Materialia",
issn = "1359-6462",
publisher = "Elsevier Limited",
}