Low-temperature, solution-processed MoO(x) for efficient and stable organic solar cells.
Sol-gel processed MoO(x) (sMoO(x)) hole-extraction layers for organic solar cells are reported. A Bis(2,4-pentanedionato)molybdenum(VI)dioxide/isopropanol solution is used and only a moderate thermal post deposition treatment at 150 °C in N(2) ambient is required to achieve sMoO(x) layers with a high work-function of 5.3 eV. We demonstrate that in P3HT:PC(60)BM organic solar cells (OSCs) our sMoO(x) layers lead to a high filling factor of about 65% and an efficiency of 3.3% comparable to that of reference devices with thermally evaporated MoO(3) layers (eMoO(3)). At the same time, a substantially improved stability of the OSCs compared to devices using a PEDOT:PSS hole extraction layer is evidenced.
Institute of Electronic Devices, University of Wuppertal, Rainer-Gruenter-Strasse 21, 42119 Wuppertal, Germany.
Kirill
K
Zilberberg
Houssem
H
Gharbi
Andreas
A
Behrendt
Sara
S
Trost
Thomas
T
Riedl