Fabrication and Comprehensive Characterization of Cr2O3-Doped Polypyrrole Thin Films for Enhanced Ethanol Gas Sensing Applications. Iraqi Journal of Applied Physics, [S. l.], v. 22, n. 2, p. 305–312, 2026. DOI: 10.2025/c171bx98. Disponível em: https://ijap-iq.com/index.php/ijap/article/view/541. Acesso em: 9 apr. 2026.