Influence of yttrium doping on the nonlinear optical limiting properties of cadmium molybdate nanostructures

被引:19
作者
Binish, B. [1 ]
Rahulan, K. Mani [1 ]
Dhanusha, A. [2 ]
Girisun, T. C. Sabari [2 ]
Laskar, Junaid Masud [1 ]
机构
[1] SRM Inst Sci & Technol, Dept Phys & Nanotechnol, Nanophoton Res Lab, Kattankulathur 603203, Tamil Nadu, India
[2] Bharathidasan Univ, Dept Phys, Nanophoton Lab, Tiruchirappalli 620024, India
关键词
PHOTOCATALYTIC PERFORMANCE; HYDROTHERMAL SYNTHESIS; ELECTRONIC-STRUCTURE; CDMOO4; ABSORPTION; PHOTOLUMINESCENCE; NANOPARTICLES; FABRICATION; ENHANCEMENT; COMPOSITE;
D O I
10.1039/d2ra04687c
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The emerging demand for the production of nonlinear optical materials with high optical limiting performance has an apparent impact in the field of nonlinear optics owing to their wide application in photonic devices. In this regard, transition metal molybdates have received attention owing to their remarkable optical and luminescence characteristics, leading to their extensive use in next generation optoelectronics devices. Herein, we report the nonlinear optical response of yttrium (Y3+) doped cadmium molybdate (CdMoO4) nanostructures synthesized via a co-precipitation technique. The X-ray diffraction and Raman spectroscopy results confirm the formation of CdMoO4 nanostructures with a tetragonal structure having the I4(1)/a space group. High resolution scanning electron microscopy (HRSEM) of the pristine CdMoO4 exposed the cubic flat edged nature of the nanostructures and that doping results in particle size reduction due to lattice contraction. X-ray photo electron spectroscopy confirmed the chemical state of the elements present in Y(3+)doped CdMoO4. The optical properties of the samples were studied using UV-Vis Spectroscopy and the bandgap was found to increase upon Y3+ doping. The NLO response measured using the open aperture z-scan technique with a Nd: YAG pulsed laser (532 nm, 7 ns, 10 Hz) exhibited a reverse saturable absorption arising from a two photon absorption (2PA) process. An increase in the 2PA coefficient and simultaneous decrease in the onset of the optical limiting threshold clearly suggests the great potential of the yttrium-doped CdMoO4 nanoparticles for good optical limiting applications.
引用
收藏
页码:27145 / 27153
页数:9
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