TY - JOUR
T1 - State-Resolved Mobility of 1 cm2/(Vs) with HgSe Quantum Dot Films
AU - Chen, Menglu
AU - Shen, Guohua
AU - Guyot-Sionnest, Philippe
N1 - Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/3/19
Y1 - 2020/3/19
N2 - HgSe colloidal quantum dot films are made by using a hybrid ligand exchange (HgSe/hybrid) in polar inks and compared with the solid-state ligand exchange using ethanedithiol (HgSe/EDT). In both systems, the conductance shows a peak at one-electron filling of the 1Se state and a dip at 2 electrons before filling the 1Pe state. The HgSe/hybrid films show a ∼100-fold increased mobility, reaching up to ∼1 cm2/Vs for 7.5 nm diameter particles. While field effect transistor and Hall measurements give similar carrier density and mobility, the temperature dependence of the mobility is consistent with hopping transport.
AB - HgSe colloidal quantum dot films are made by using a hybrid ligand exchange (HgSe/hybrid) in polar inks and compared with the solid-state ligand exchange using ethanedithiol (HgSe/EDT). In both systems, the conductance shows a peak at one-electron filling of the 1Se state and a dip at 2 electrons before filling the 1Pe state. The HgSe/hybrid films show a ∼100-fold increased mobility, reaching up to ∼1 cm2/Vs for 7.5 nm diameter particles. While field effect transistor and Hall measurements give similar carrier density and mobility, the temperature dependence of the mobility is consistent with hopping transport.
UR - https://www.scopus.com/pages/publications/85081675556
U2 - 10.1021/acs.jpclett.0c00587
DO - 10.1021/acs.jpclett.0c00587
M3 - Article
C2 - 32102543
AN - SCOPUS:85081675556
SN - 1948-7185
VL - 11
SP - 2303
EP - 2307
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 6
ER -