Stable organic photovoltaic with PEDOT:PSS and MoOX mixture anode interfacial layer without encapsulation

Herein, we report about an efficient and stable organic photovoltaic that uses a poly(3,4-ethylenedioxythiophene): poly(styrene-sulfonate) (PEDOT: PSS) and molybdenum oxide (MoOX) mixture for the anode interfacial layer, and that can reach 4.43% power conversion efficiency (PCE) under AM1.5 conditions. Utilizing PEDOT: PSS: MoOX (1: 1), the shelf lifetime of poly(3-hexylthiophene) (P3HT), and indene-C-60 bisadduct (ICBA)-based solar cells without encapsulation, can be realized with only a 25% deterioration after 672 h of storage in air. Furthermore, we compare the photovoltaic performance of the P3HT: ICBA-based organic photovoltaic with PEDOT: PSS, and PEDOT: PSS: MoOX, in which PEDOT: PSS: MoOX has outperformed the others. In addition, the water vapor transmission rate of PEDOT: PSS: MoOX is 0.17 gm/(m(2) day), which is much less than that of PEDOT: PSS. (C) 2015 Elsevier B.V. All rights reserved.