Yb3+/Er3+ co-doped Dion–Jacobson niobium layered perovskites as NIR-to-green upconversion materials

New Journal of Chemistry v. 44, n. 24, p. 10165-10171, 2020 3.288 10.1039/d0nj00261e Vendruscolo, V. ; Giordano, L. ; Constantino, V. R. L.; Rodrigues, L. C. V. 2020