TY - JOUR
T1 - Cooperative charging in a nanocrystal assembly gated by ionic liquid
AU - Chen, Tianran
AU - Skinner, Brian
AU - Shklovskii, B. I.
PY - 2011/12/9
Y1 - 2011/12/9
N2 - In order to make a densely packed assembly of undoped semiconductor nanocrystals conductive, it is usually gated by a room-temperature ionic liquid. The ionic liquid enters the pores of the supercrystal assembly under the influence of an applied voltage. We study the capacitance of such a device as a function of the gate voltage. We show that, counterintuitively, the capacitance of the system is the sum of δ-functions located at a sequence of critical gate voltages. At each critical voltage, every nanocrystal acquires one additional electron.
AB - In order to make a densely packed assembly of undoped semiconductor nanocrystals conductive, it is usually gated by a room-temperature ionic liquid. The ionic liquid enters the pores of the supercrystal assembly under the influence of an applied voltage. We study the capacitance of such a device as a function of the gate voltage. We show that, counterintuitively, the capacitance of the system is the sum of δ-functions located at a sequence of critical gate voltages. At each critical voltage, every nanocrystal acquires one additional electron.
UR - http://www.scopus.com/inward/record.url?scp=84855458230&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855458230&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.84.245304
DO - 10.1103/PhysRevB.84.245304
M3 - Article
AN - SCOPUS:84855458230
SN - 1098-0121
VL - 84
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 24
M1 - 245304
ER -