LIÊN KẾT WEBSITE
Transformation of the structural surface morphology and electronic structure of CdS nanostructured films prepared in glycerol-containing solution, under ultrasonic irradiation
Advances in Natural Sciences: Nanoscience and Nanotechnology Số 1, năm 2010 (Tập 1, trang -)
ISSN: 20436262
ISSN: 20436262
DOI: 10.1088/2043-6254/1/1/015013
Tài liệu thuộc danh mục: Scopus
Article
English
Từ khóa: Cadmium sulfide; Electronic structure; Glycerol; Grain boundaries; II-VI semiconductors; Irradiation; Morphology; Surface morphology; Thin films; X ray diffraction; CdS thin films; Chemical-bath deposition; Conventional surfactants; Crystalline modifications; Crystallographic properties; Nanostructured Films; Scanning electron microscopic; Ultrasound irradiation; Sulfur compounds
Tóm tắt tiếng anh
Chemical bath deposition was improved by using glycerol, a very conventional surfactant, to control cadmium sulfide CdS in various sizes and structures, under ultrasonic irradiation conditions. Consequently, an effective route to prepare CdS thin film that consists of either CdS fibrils with an average diameter of 52 nm or monodispersed CdS grains 35 to 80 nm in size is proposed. X-ray diffraction (XRD) studies revealed that, in the crystallographic properties of the obtained CdS films, CdS may exist in two crystalline modifications-a hexagonal and a cubic phase-that are characterized by several diffraction peaks positioned at 2θ ≈ 23.4̊, 27.1̊ and 47.8̊ Beside this, UV-Vis studies also revealed the positive effect of glycerol at grain boundaries, leading to detrimental reduction of the band bending towards the absorber surface and increasing the population of optical absorptions. © 2010 Vietnam Academy of Science & Technology.
