{HEAD ~ The energy difference} between the maximum of the gain and {TAIL ~ the emission maximum} decreases with decreasing size of the nanocrystal 
between
{ HEAD ~ The energy difference } between the maximum of the gain and { TAIL ~ the emission maximum } decreases with decreasing size of the nanocrystal
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH