Origin and tuning of the band gaps in transparent conducting oxides: the example of M2O3 (M = Al, Ga, In) - Sabino, Fernando Pereira; Besse, Rafael; Oliveira, Luiz Nunes de; Wei, S H; Silva, Juarez Lopes Ferreira da (Semana Integrada do Instituto de Física de São Carlos - SIFSC, 2015)