%0 Journal Article
%A Bao, Xichang
%A Zhu, Qianqian
%A Wang, Ting
%A Guo, Jing
%A Yang, Chunpeng
%A Yu, Donghong
%A Wang, Ning
%A Chen, Weichao
%A Yang, Renqiang
%D 2015
%T Simple
O2 Plasma-Processed V2O5 as an Anode
Buffer Layer for High-Performance Polymer
Solar Cells
%U https://acs.figshare.com/articles/journal_contribution/Simple_O_sub_2_sub_Plasma_Processed_V_sub_2_sub_O_sub_5_sub_as_an_Anode_Buffer_Layer_for_High_Performance_Polymer_Solar_Cells/2176297
%R 10.1021/acsami.5b00091.s001
%2 https://ndownloader.figshare.com/files/3810220
%K annealed V 2O
%K V 2O layer
%K O 2 plasma treatment
%K ITO
%K anode buffer layer
%K power conversion efficiencies
%K O 2 plasma
%K PCE
%K indium tin oxide
%K V 2O
%K PEDOT
%K PSC
%K charge transport property
%K Anode Buffer Layer
%K V 2O anode buffer layer
%K 3HT
%K O 2 plasma processing method
%K anode buffer layer show
%K AM
%X A simple
O2 plasma processing method for preparation
of a vanadium oxide (V2O5) anode buffer layer
on indium tin oxide (ITO)-coated glass for polymer solar cells (PSCs)
is reported. The V2O5 layer with high transmittance
and good electrical and interfacial properties was prepared by spin
coating a vanadium(V) triisopropoxide oxide alcohol solution on ITO
and then O2 plasma treatment for 10 min [V2O5 (O2 plasma)]. PSCs based on P3HT:PC61BM and PBDTTT-C:PC71BM using V2O5 (O2 plasma) as an anode buffer layer show high power
conversion efficiencies (PCEs) of 4.47 and 7.54%, respectively, under
the illumination of AM 1.5G (100 mW/cm2). Compared to that
of the control device with PBDTTT-C:PC71BM as the active
layer and PEDOT:PSS (PCE of 6.52%) and thermally annealed V2O5 (PCE of 6.27%) as the anode buffer layer, the PCE was
improved by 15.6 and 20.2%, respectively, after the introduction of
a V2O5 (O2 plasma) anode buffer layer.
The improved PCE is ascribed to the greatly improved fill factor and
enhanced short-circuit current density of the devices, which benefited
from the change in the work function of V2O5, a surface with many dangling bonds for better interfacial contact,
and the excellent charge transport property of the V2O5 (O2 plasma) layer. The results indicate that an
O2 plasma-processed V2O5 film is
an efficient and economical anode buffer layer for high-performance
PSCs. It also provides an attractive choice for low-cost fabrication
of organic electronics.
%I ACS Publications