Nanostructured SnSe: hydrothermal synthesis and disorder-induced enhancement of thermoelectric properties at medium temperatures
Source abstract
Abstract
Nanostructured SnSe was fabricated using hydrothermal methods followed by sintering in an evacuated-and-encapsulated ampoule. The effects of reaction temperature (150–170 °C), duration (6–12 h) and sintering temperature (450–580 °C) on the electronic transport are investigated. It is found that both the electrical conductivity and thermopower of hydrothermally synthesized and nanostructured SnSe increase with temperature and follow the variable range hopping process. As a result, disorder-induced improvement of electronic transport combined with low thermal conductivity on the pressed sample face perpendicular to the pressed direction leads to zT = 0.54 at 550 K for the sample sintered at 500 °C, demonstrating a significant improvement of zT value in the intermediate temperature range for the SnSe system.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Chalcogenide Semiconductor Thin Films · Perovskite Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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