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