biostudies-literatureJeong HNational Research Foundation of KoreaNational Science FoundationOffice of Naval Research20871-20878https://www.ebi.ac.uk/biostudies/studies/S-EPMC9065771biostudies-literatureUnknown9(36)The demand for large-area, high-quality synthesis of graphene with chemical vapor deposition (CVD) has increased for the realization of next-generation transparent and flexible optoelectronic applications. In conventional CVD processes, various synthesis parameters can strongly affect the quality of the resultant graphene. In particular, surface engineering of a copper catalyst substrate is one of the most promising pathways for achieving high-quality graphene with excellent reproducibility. For this purpose, simple wet chemical etching of a catalyst substrate without toxic fume byproducts or metal ion residues is desired. Here, we suggest a facile method for preparing a pretreated copper catalyst substrate for highly uniform, large-area CVD graphene growth. This pretreatment method involvRSC advancesHighly uniform monolayer graphene synthesis <i>via</i> a facile pretreatment of copper catalyst substrates using an ammonium persulfate solution.PMC9065771N000141612685CBET-1605338NRF-2017R1C1B20023232012026372Hihath JChung SJeong HKim JKKim YLee THwang WTSong YfalseHighly uniform monolayer graphene synthesis <i>via</i> a facile pretreatment of copper catalyst substrates using an ammonium persulfate solution.The demand for large-area, high-quality synthesis of graphene with chemical vapor deposition (CVD) has increased for the realization of next-generation transparent and flexible optoelectronic applications. In conventional CVD processes, various synthesis parameters can strongly affect the quality of the resultant graphene. In particular, surface engineering of a copper catalyst substrate is one of the most promising pathways for achieving high-quality graphene with excellent reproducibility. For this purpose, simple wet chemical etching of a catalyst substrate without toxic fume byproducts or metal ion residues is desired. Here, we suggest a facile method for preparing a pretreated copper catalyst substrate for highly uniform, large-area CVD graphene growth. This pretreatment method involv2019-01-01T00:00:00Z2019 Jul2025-04-18T14:15:10.507Z2025-04-07T00:19:45.096ZS-EPMC90657713551557110.1039/c9ra02689d