Synthesis of SnO2 for Thermoelectric Applications Using the Hydrothermal, Co-precipitation, and Co-Precipitation Sonication MethodsIzzatunnisa Azzahra, Chusnana Insjaf Yogihati, Alma Nur Roisatul Masruhah, Reza Akbar Pahlevi and Markus DiantoroE3S Web of Conf., 517 (2024) 10004DOI: https://doi.org/10.1051/e3sconf/202451710004