A First-Principle Study of B- and P-Doped Silicon Quantum Dots

Figure 2

The optimized bond lengths around the impurity site for the undoped Si QDs (black ones, X = Si), B-doped Si QDs (red ones, X = B), and P-doped Si QDs (green ones, X = P). The x-axis measures the distance from the center to the replaced Si atom in undoped QDs. The four different Si–X bond lengths are indicated by ●, ■, ▲, and ▼, respectively.