A facile microwave-assisted synthesis of bismuth copper oxytelluride for optoelectronic and photodetection applications

Laser power and high-temperature dependent Raman studies of layered bismuth and copper-based oxytellurides for optoelectronic applications

“…The XRD patterns observed earlier for bismuth-based oxytelluride samples prepared using the MW method showed that rapid MW heating at the appropriate power and exposure time can cause the formation of good crystalline phases. 38,39 This helped us choose optimized conditions for synthesizing the samples in this work. As a result, distinctive XRD peaks of higher intensities that matched well with the existing phases were observed for all the prepared samples.…”

“…It can be observed from the PL spectra that peaks are centered around the 570–700 nm region. 38,39 PL spectra of semiconductor materials are observed due to the production of electron–hole recombination pairs by the incoming light. A lower PL intensity often denotes a slower recombination rate of these electron–hole pairs.…”

“…Still, there is hardly any literature available showing the temperature-dependent Raman studies of such materials. 38,39 This is the motivational factor behind performing such an interesting temperature-dependent Raman behavior study of these materials, which can provide detailed insights into various properties of these materials. Here, all the measurements are taken from RT (303 K) to 500 °C (773 K), the results of which are shown below individually for each sample.…”

“…37 Results obtained from previous works paved the path for further continued research on these materials. 38,39 Employing our prior experiences in preparing such materials using the MW method to obtain good results, the sample preparation was done here at 540 watts MW power for an irradiation time of 15 minutes. Confirmation of the presence of various constituent elements has been made through various characterization studies.…”

Rapid microwave-assisted synthesis and characterization of a novel CuCoTe nanocomposite material for optoelectronic and dielectric applications

“…1 To produce nanomaterials, several physical as well as chemical methods have been employed recently, such as hydrothermal, solvothermal, sol–gel, microwave, and wet chemical. 2–7 However, microwave synthesis has been used for many applications in materials science due to increased reaction rates and, consequently, rapid volumetric heating. 8 Moreover, the microwave-assisted method is energy coherent and a faster process that optimizes the physical properties of the nanostructures and can also produce sizable quantities of products.…”