Studies on optical absorption and structural properties of Fe doped CdS quantum dots

被引：47
|
作者：
Thambidurai, M. [1 ]
Muthukumarasamy, N. [1 ]
Agilan, S. [1 ]
Murugan, N. [2 ]
Arul, N. Sabari [3 ]
Vasantha, S. [1 ]
Balasundaraprabhu, R. [4 ]
机构：
[1] Coimbatore Inst Technol, Dept Phys, Coimbatore, Tamil Nadu, India
[2] Coimbatore Inst Technol, Dept Mech Engn, Coimbatore, Tamil Nadu, India
[3] Bharathiar Univ, Dept Nanosci & Technol, Coimbatore, Tamil Nadu, India
[4] PSG Coll Technol, Dept Phys, Coimbatore, Tamil Nadu, India
来源：
SOLID STATE SCIENCES | 2010年 / 12卷 / 09期
关键词：
Quantum confinement; HRTEM; Optical absorption; Fe doped CdS; THIN-FILMS; SEMIMAGNETIC SEMICONDUCTORS; SOLAR-CELLS; NANOCRYSTALS; NANOPARTICLES; SPINTRONICS; CLUSTERS; MATRIX; SIZE;
D O I：
10.1016/j.solidstatesciences.2010.06.020
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Fe doped CdS quantum dots have been prepared using simple precursors by chemical precipitation technique. Fe doped CdS quantum dots have been synthesized by mixing cadmium nitrate, sodium sulfide and adding Fe under suitable conditions. X-ray diffraction analysis reveals that undoped and Fe doped CdS crystallizes in hexagonal structure. The lattice constants of Fe doped CdS nanoparticles decreased slightly with incorporation of Fe and no secondary phase was observed. The average grain size of the nanoparticles is found to lie in the range of 2.8-4.2 nm. HRTEM results show that undoped and 3.75% Fe doped CdS nanoparticles exhibit a uniform size distribution and average size of the nanoparticles is about 2-3 nm. Raman spectra show that 1LO and 2LO peaks of the Fe doped CdS samples are slightly red shifted compared with those of undoped CdS. Optical absorption spectra of Fe doped CdS nanoparticles exhibited red shift. (C) 2010 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：1554 / 1559
页数：6
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