Figure 7
From: Tunability Limit of Photoluminescence in Colloidal Silicon Nanocrystals
In the large size regime the large driving force and large availability of the accepting states result in a large electron transfer rate.In contrast, a small rate of electron transfer is expected due to decreased energy difference and availability of accepting states. In a critical case that the conduction band edge of Si NCs approaches to the Y-band, the rate of electron transfer to Si NCs significantly decreases and nonradiative trapping becomes dominant.
