TY - JOUR
KW - General Materials Science
AU - Curtis Beimborn II
AU - Luke Walther
AU - Kenneth Wilson
AU - J. Mathias Weber
AB - We report the size-dependent pressure response for CsPbBr3 perovskite nanocrystals in the size range 5.7–10.9 nm using photoluminescence spectroscopy in a diamond anvil cell. As the nanocrystal size decreases below ca. 7.5 nm, we observe a decrease in the transition pressure at which there is a change in the mode of deformation concomitant with an isostructural phase transition. We hypothesize that surface fluctuations regarding the tilt and distortion of surface PbBr6 octahedra facilitate the change in the mode of deformation and phase transition at lower pressures for smaller nanocrystals.
BT - The Journal of Physical Chemistry Letters
DA - 2020-02
DO - 10.1021/acs.jpclett.0c00174
IS - 5
N2 - We report the size-dependent pressure response for CsPbBr3 perovskite nanocrystals in the size range 5.7–10.9 nm using photoluminescence spectroscopy in a diamond anvil cell. As the nanocrystal size decreases below ca. 7.5 nm, we observe a decrease in the transition pressure at which there is a change in the mode of deformation concomitant with an isostructural phase transition. We hypothesize that surface fluctuations regarding the tilt and distortion of surface PbBr6 octahedra facilitate the change in the mode of deformation and phase transition at lower pressures for smaller nanocrystals.
PB - American Chemical Society (ACS)
PY - 2020
SP - 1975
EP - 1980
T2 - The Journal of Physical Chemistry Letters
TI - Size-Dependent Pressure-Response of the Photoluminescence of CsPbBr3 Nanocrystals
VL - 11
SN - 1948-7185, 1948-7185
ER -