%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