title: Comment on 'Temperature dependent optical properties of PbS nanocrystals'.
abstract: We address erroneous statements made by Nordin et al (2012 Nanotechnology 23 275701) claiming the inadequacy of an expression we, Ullrich et al (2011 Appl. Phys. Lett. 99 081901), used to fit the temperature dependence of the photoluminescence and the absorption of PbS quantum dots. We further correct a quote by Nordin et al, who, when referring to our work, mistakenly claimed temperature invariance of the Stokes shift.
authors.affiliation: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright Patterson AFB, OH 45433-7707, USA. bruno@fis.unam.mx
authors.forename: B
authors.initials: B
authors.lastname: Ullrich
authors.forename: J S
authors.initials: JS
authors.lastname: Wang
authors.forename: G J
authors.initials: GJ
authors.lastname: Brown
mesh_terms: D003460:Crystallization / Q000379:methods*; D007854:Lead / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D012031:Refractometry / Q000379:methods*; D018036:Selenium Compounds / Q000737:chemistry*
chemical_list: D018036:Selenium Compounds; D007854:Lead