Hidayat Y, Rahmawati F, Heraldy E, Nugrahaningtyas K, Nurcahyo I. The Effect Of Sulphur (S) Doping and K+ Adsorption To The Electronic Properties Of Graphene: A Study By DFTB Method. J.Ris.Kim. [Internet]. 2022 Sep. 30 [cited 2024 Apr. 25];13(2):130-7. Available from: http://jrk.fmipa.unand.ac.id/index.php/jrk/article/view/485