Schottky solar cells based on colloidal nanocrystal films.
We describe here a simple, all-inorganic metal/NC/metal sandwich photovoltaic (PV) cell that produces an exceptionally large short-circuit photocurrent (>21 mA cm(-2)) by way of a Schottky junction at the negative electrode. The PV cell consists of a PbSe NC film, deposited via layer-by-layer (LbL) dip coating that yields an EQE of 55-65% in the visible and up to 25% in the infrared region of the solar spectrum, with a spectrally corrected AM1.5G power conversion efficiency of 2.1%. This NC device produces one of the largest short-circuit currents of any nanostructured solar cell, without the need for sintering, superlattice order or separate phases for electron and hole transport.
Luther
Joseph M
JM
National Renewable Energy Laboratory, Golden, Colorado 80401, USA.
Law
Matt
M
Beard
Matthew C
MC
Song
Qing
Q
Reese
Matthew O
MO
Ellingson
Randy J
RJ
Nozik
Arthur J
AJ