First-principles investigation on N/C co-doped CeO
2
Ren Rong-Kang
1, 2
, Zhang Ming-Ju
1, 2
, Peng Jian
1, 2
, Niu Meng
1, 2
, Li Jian-Ning
1, 2
, Zheng Shu-Kai
1, 2, 3, †
(color online) Absorption spectra of pure CeO
2
, N-doped CeO
2
, C-doped CeO
2
, N/C co-doped CeO
2
.