Figure 4.

Relative intensity change $\Delta I/I$ corresponding to a voltage sweep of an AP calculated for 4-nm (blue-square), 8-nm (red-circle), and 12-nm (green-triangle)-long NRs. (A–C) Type-I CdSe NRs. (D–I) Type-II ZnSe-CdS heterostructure NRs. (D–F) Red-shifting geometry. (G–I) Blue-shifting geometry. The $k_t$-values are adjusted such that QY at $\Delta V=0$ are 0.9 (A, D, and G), 0.5 (B, E, and H), and 0.1 (C, F, and I). All subplots (A–I): x ticks are α-values. To see this figure in color, go online.