TY - JOUR
T1 - Tunability of the optical band edge in thin PbS films chemically deposited on GaAs(100)
AU - Osherov, Anna
AU - Makai, Janos P.
AU - Balazs, Janos
AU - Horvath, Zsolt J.
AU - Gutman, Nadav
AU - Saár, Amir
AU - Golan, Yuval
PY - 2010/7/7
Y1 - 2010/7/7
N2 - The optical properties of chemical-solution-deposited thin films of lead sulfide (PbS) were investigated using infrared transmission and photoluminescence spectroscopies. The synthesized films are characterized by a wide range of microstructures, from 15 nm nanocrystals up to monocrystals. Energy bandgap values for bulk and nanostructured layers varied from 0.41 eV up to 0.48 eV, respectively. Blueshifts in both absorbance and emission peaks of the nanostructured layers were obtained due to quantum size effects. The optical properties of the films are shown to be size-dependent, with the band edge increasing with temperature.
AB - The optical properties of chemical-solution-deposited thin films of lead sulfide (PbS) were investigated using infrared transmission and photoluminescence spectroscopies. The synthesized films are characterized by a wide range of microstructures, from 15 nm nanocrystals up to monocrystals. Energy bandgap values for bulk and nanostructured layers varied from 0.41 eV up to 0.48 eV, respectively. Blueshifts in both absorbance and emission peaks of the nanostructured layers were obtained due to quantum size effects. The optical properties of the films are shown to be size-dependent, with the band edge increasing with temperature.
UR - http://www.scopus.com/inward/record.url?scp=77955971188&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/22/26/262002
DO - 10.1088/0953-8984/22/26/262002
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C2 - 21386454
AN - SCOPUS:77955971188
SN - 0953-8984
VL - 22
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 26
M1 - 262002
ER -