Water-soluble fluorescent colloidal quantum dots (QDs) have been widely used in some biological and biomedical fields, so the interaction of QDs with biomolecules recently attracts increasing attention. In this paper, CdTe quantum dots modified by a natural biopolymer based on polyacrylamide (PAAm) grafted onto sodium alginate (Alg-g-PAAm) were synthesized in an aqueous solution. Then, the bind...

Cadmium telluride (CdTe) has been recognized as a promising photovoltaic material for thin-film solar cells because of its near optimum bandgap of ~1.5 eV and high absorption coefficient. The energy gap is near optimum for a single junction solar cell and the high absorption coefficient allows films as thin as 2 μm to absorb more than 98% of the above-bandgap radiation. Cells with efficiencies ...

This paper reports a study of photooxidation and photomodification processes of the CdTe/CdS quantum dots embedded in a polymer matrix under ambient condition. During the first few minutes of irradiation, the quasi-inverse increase in photoluminescence intensity has been observed indicating the passivation of the nanocrystal surface traps by water molecules. A prolonged irradiation of the polym...

The edge surfaces of single crystal CdTe play an important role in the electronic properties and performance of this material as an X-ray and γ-ray radiation detector. Edge effects have previously been reported to reduce the spectroscopic performance of the edge pixels in pixelated CdTe radiation detectors without guard bands. A novel Technology Computer Aided Design (TCAD) model based on exper...

Over the last decade, cadmium telluride (CdTe) and cadmium zinc telluride (CdZnTe) wide band gap semiconductors have attracted increasing interest as X-ray and gamma ray detectors. Among the traditional high performance spectrometers based on silicon (Si) and germanium (Ge), CdTe and CdZnTe detectors show high detection efficiency and good room temperature performance and are well suited for th...

Thin film CdTe and CuInSe2 based solar cells have reported efficiencies of over 15% and 17% respectively for small area laboratory devices and over 10% for prototype modules. In the present article, an approach to translate laboratory results to the development of large scale module manufacturing facilities is discussed, and critical issues associated with the development of CuInSe2 and CdTe th...

Glucose, as the major energy source in cellular metabolism, plays an important role in the natural growth of cells. Herein, a simple, rapid and low-cost method for the glucose determination by utilizing glucose oxidase and CdTe/thioglycolic acid (TGA) quantum dots (QDs) on a thin layer chromatography (TLC) plate has been described. The detection was based on the combination of the glucose enzym...

One-dimensional (1D) structures of metal and semiconductor materials, often referred to as nanowires, have become a focus of interdisciplinary research in recent years both as a model system for studies of 1D quantum confinement effects and also because of their potential applications in electronics and photonics. A number of direct synthetic methods for the production of nanowires of controlle...

Cadmium telluride (CdTe) solar cells have achieved efficiencies of over 22%, despite having absorber layer grain sizes less than 10 ?m and hence a very high density boundaries. Recent research has shown that this is possible because partial passivation boundaries during the widely used cadmium chloride treatment, interior defects by selenium alloying CdTe. Here, state-of-the art TEM-based catho...