One-Step Fabrication of CdS Nanorod Arrays via Solution Chemistry

Abstract

Well-defined hexangularly faced CdS nanorod arrays were fabricated via a facile one-step and nontemplate hydrothermal approach in large scale by using biomolecules of glutathione as capping agents. Structural and morphological evolutions of CdS nanorod arrays were studied by scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. A formation mechanism of CdS nanorod arrays via this one-step synthesis was tentatively studied by investigating the effects of synthesis parameters on the nanorod arrays. The growth process of CdS nanorod arrays was discussed further from the absorption spectra of CdS nanorod arrays obtained at different reaction times.

The role of glutathione on shape control and photoelectrical property of cadmium sulfide nanorod arrays

“…These results suggest that the aligned CdS nanorods should grow from the compact CdS nanocrystal film through the synergetic effect of the thiol and the dicarboxyl group in glutathione. As Chen et al mentioned [29], the thiol and the dicarboxyl group in glutathione may be selectively adsorbed on the low-index faces of CdS nanocrystals like (0 1 0), (1 0 0), (1 1 0), etc., slowing the growth along that side and leading to the formation of CdS nanorods with oriented structure.…”

“…Zhou et al have fabricated CdSe nanowire arrays on ITO (tin-doped indium oxide) by electrochemical approach [28]. Most recently, Chen' group has developed a non-template hydrothermal method to grow CdS nanorod arrays (CdS NRs) on ITO substrate by using glutathione as capping agents [29]. The CdS NRs exhibit a welldefined hexangular morphology with $100 nm diameter and 300 -400 nm length.…”

“…In this article, using FTO (fluorine-doped tin oxide) as substrate and glutathione as capping agents, we fabricated CdS NRs with $100 nm in diameter and $700 nm in length, which is about twice as long as the one reported [29]. The role of glutathione on shape control and photoelectrical property of CdS NRs was studied.…”

Synthesis, characterization and optical properties of cobalt and lanthanide doped CdS nanoparticles

“…For the synthesis of semiconductor nanomaterials, a large number of synthetic methods, like solvo/hydrothermal [33,34], thermal evaporation [35], plasma method [36], solution based chemical methods [37] and sonochemical method [38][39][40] have been employed. Co-precipitation method is most popular technique that is used in industrial applications because of the cheap raw materials, easy handling and large scale production [41].…”

Enhanced photoelectrochemical activity of electro-synthesized CdS–Bi2S3 composite films grown with self-designed cross-linked structure

“…The recent trend is to develop low cost tailor made solar energy materials with selected combinations of these chalcogenide compounds expected to produce the desired level of photoelectrochemical (PEC) properties such as high absorption of solar energy spectrum, compatible band gap energies, high life time of the charge carriers and stable photocurrent during discharge. Among the several other chalcogenides, CdS and Bi 2 S 3 have been studied extensively as individual binary components for thin film applications [8][9][10][11][12][13][14][15], however, studies on their composite film matrices are still rare. In view of the chemical/thermal stability of CdS and potential PEC character of Bi 2 S 3 , the CdS-Bi 2 S 3 composite is expected to be one of the most sensitive semiconductor materials for application in nonlinear optics as well as liquid-junction solar cells [16].…”