Semitransparent organic photovoltaics with a bilayer heterojunction structure was prepared using the wide bandgap p-type inorganic semiconductor donor copper(Ⅰ)thiocyanate(CuSCN)and macromolecular acceptor material Y6.The device performance of the active layer prepared using CuSCN and Y6 is relatively low.Therefore,1,8-diiodooctane(DIO)was introduced into the active layer in the form of surface treatment and additives to improve hole mobility of CuSCN,optimize morphology of Y6 and thereby enhance the performance of the semitransparent organic photovoltaics.Finally,the semitransparent organic photovoltaics based on the active layer with DIO exhibit a maximum short-circuit current density of 7.48 mA/cm2 and power conversion efficiency of 3.37％,significantly higher than the device based on CuSCN/Y6(5.40 mA/cm2,2.62％).
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