Improved Efficiency of Graphene/Si Heterojunction Solar Cells by Optimizing Hydrocarbon Feed Rate
Figure 3
Mechanism for the efficiency improvement by HNO3 treatment. (a) Dark current density-voltage curves of solar cells based on AC-0.01 before (red line) and after HNO3 (black line) treatment. (b) Plots of versus voltage showing diode ideality factors before () and after () HNO3 treatment. ((c), (d)) Linear fit of dV/d() versus shows the of the AC-0.01 solar cell before and after HNO3 treatment: (c) before HNO3 treatment and (d) after HNO3 treatment.
