Vibrational modes and resonant Raman spectra of new B2C nanoribbons

► A characteristic Raman-active RBLM is found to exist in all types of B2C-NRs. ► The RBLM frequency varies linearly with the inverse square root of B2C-NR width. ► The slope depends closely on the types of B2C-NRs. ► RBLM is a very useful Raman mode to identify B2C-NRs width and types.