• Urbach’s tail in the absorption spectra of Cu2GeSe3 semiconducting compound 

      Rincón, C.; Marcano García, Gustavo José; Wasím, Syed M.; Marín, G.; Villarreal, Manuel; Sánchez Pérez, Gerardo (SaberULA, 2019-05-29)
      In the present work we report on the analysis of the Urbach’s tail in pure and Mn-doped Cu2GeSe3 samples having small deviation from its ideal stoichiometry. It is found that the high values of the phonon energy h?p ...