Im, Min Ji Hyeong, Seok-Ki Park, Min Lee, Seoung-Ki Kim, Tae-Wook Jung, Gun Young Bae, Sukang 2024-01-19T15:31:12Z 2024-01-19T15:31:12Z 2021-10-21 2021-02-09 2470-1343 https://pubs.kist.re.kr/handle/201004/117412 Doping is an effective method for controlling the electrical properties and work function of graphene which can improve the power conversion efficiency of graphene-based Schottky junction solar cells (SJSCs). However, in previous approaches, the stability of chemical doping decreased over time due to the decomposition of dopants on the surface of graphene under ambient conditions. Here, we report an efficient and strong p-doping by simple sandwich doping on both the top and bottom surfaces of graphene. We confirmed that the work function of sandwich-doped graphene increased by 0.61 eV and its sheet resistance decreased by 305.8 Omega/sq, compared to those of the pristine graphene. Therefore, the graphene-silicon SJSCs that used sandwich-doped graphene had a power conversion efficiency of 10.02%, which was 334% higher than that (2.998%) of SJSCs that used pristine graphene. The sandwich-doped graphene-based silicon SJSCs had excellent long-term stability over 45 days without additional encapsulation. English AMER CHEMICAL SOC Sandwich-Doping for a Large Schottky Barrier and Long-Term Stability in Graphene/Silicon Schottky Junction Solar Cells Article 10.1021/acsomega.0c05871 1 ACS OMEGA, v.6, no.5, pp.3973 - 3979 ACS OMEGA 6 5 3973 3979 scie scopus 000618860000054 2-s2.0-85101006037 Chemistry, Multidisciplinary Chemistry Article