One-step structure-directing approach to Ce3+-doped CaS luminescent micro-nanocrystals. Issue 45 (23rd October 2015)

• Record Type: Journal Article
• Authors: Qiu, Zhongxian; Lian, Hongzhou; Luo, Tingting; Fan, Jian; Cai, Xuechao; Cheng, Ziyong; Shang, Mengmeng; Lian, Shixun; Lin, Jun
• Is Part Of: CrystEngComm. Volume 17:Issue 45(2015)
• Page Start: 8676
• Page End: 8682
• Publication Date: 2015-10-23
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c5ce01800e
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : A non-aqueous, low-temperature, surfactant–ligand co-assisted solvothermal technique is proposed for the synthesis of shape- and size-controlled CaS:Ce 3+ luminescent micro-nanocrystals. Abstract : A one-step surfactant–ligand co-assisted solvothermal technique was proposed for the preparation of CaS-based luminescent materials with ethylenediamine as solvent, and acetylacetone, 1-dodecanethiol and polyvinylpyrrolidone as capping agents. The morphologies of the obtained particles can be adjusted from an octahedron to a hexagonal prism or a cube by changing the solvent volume ratios of ethylenediamine and different capping agent(s), and the mean sizes of the crystals can be changed in a relatively wide range from tens of nanometers to a few micrometers. The growth process and dynamic mechanism were discussed. A series of CaS: x Ce 3+ nanocrystals were prepared and a small red shift of emission positions was observed from green to yellowish-green with increasing Ce 3+ concentration.