Publications by authors named "Shahzada Zulkifal"
MnTe emerges as an enormous potential for medium-temperature thermoelectric applications due to its lead-free nature, high content of Mn in the earth's crust, and superior mechanical properties. Here, it is demonstrate that multiple valence band convergence can be realized through Pb and Ag incorporations, producing large Seebeck coefficient. Furthermore, the carrier concentration can be obviously enhance by Pb and Ag codoping, contributing to significant enhancement of power factor.
View Article and Find Full Text PDFArticle Synopsis
- MnTe is highlighted as a promising lead-free thermoelectric material for clean energy, but its lower performance (peak ZT of 1.4) has limited its broader use.
- Recent advancements achieve a higher ZT of 1.6 at 873 K by optimizing electronic band structure and carrier concentration through Sb-Ge alloying, significantly improving power factor.
- Additionally, the incorporation of MnS nanorods leads to effective phonon scattering, resulting in low thermal conductivity and thus enhancing the material's thermoelectric efficiency for potential applications in waste heat recovery and power generation.
SnSe crystals have gained considerable interest for their outstanding thermoelectric performance. Here, we achieve excellent thermoelectric properties in SnPbZnSe crystals via valence band convergence and point-defect engineering strategies. We demonstrate that Pb and Zn codoping converges the energy offset between multiple valence bands by significantly modifying the band structure, contributing to the enhancement of the Seebeck coefficient.
View Article and Find Full Text PDF