SPINACH AND BEETROOT EXTRACTS AS SENSITIZERS FOR ZnO BASED DSSC. International Journal of Engineering Sciences & Management Research, [S. l.], v. 2, n. 5, p. 37–42, 2015. Disponível em: https://ijesmr.com/index.php/ijesmr/article/view/59. Acesso em: 21 jul. 2026.