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. 2017 Aug 7;4:21. doi: 10.1186/s40580-017-0115-0

Fig. 1.

Fig. 1

a AM 1.5G solar spectrum (from ASTM G173-03 reference spectra), band diagram, and first exciton energy of PbS CQDs with various diameters. b Characteristics of Schottky junction PbS CQD PVs as a function of the first exciton energy (reprinted with permission from ref. 6, Copyright 2013 American Physical Society)