Third-Order Nonlinear Optical Properties of CDTE Quantum Dots

被引：2
|
作者：
Ramya, Emusani [1 ]
Rao, D. Narayana [2 ]
机构：
[1] CMR Inst Technol, Dept Sci & Humanities, Hyderabad 501401, India
[2] Univ Hyderabad, Sch Phys, Hyderabad, India
来源：
INTERNATIONAL JOURNAL OF NANOSCIENCE | 2022年 / 21卷 / 01期
关键词：
Quantum dots; absorption; energy gap; two photon absorption; ABSORPTION; NANOCRYSTALS; ENERGY;
D O I：
10.1142/S0219581X2250003X
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Size-dependent optical properties of semiconductor cadmium tellurite (CdTe) quantum dots (QDs) were examined by UV-Visible absorption, photoluminescence, Transmission electron microscope (TEM) and Z-scan. Red shift in the wavelength was observed in absorption and photoluminescence as the size increased. The size of the CdTe QDs is in the range between 3 nm and 6 nm. Two-photon absorption with reverse saturable absorption varied with size in picosecond region due to exciton oscillator. CdTe QDs can be used as optical limiters in the region of visibility.
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页数：6
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