Solar energy accounts for more than 99% of the total energy of the earth.As a pollution-free and inexhaustible energy source, solar energy becomes the focus to resolve the energy crisis.Organic solar have attract a great interest because of their abundantly available raw materials, low costs and simple fabrication technologies.However, the main disadvantages associated with organic photovoltaic cells are low efficiency, low stability and low strength compared to inorganic photovoltaic cells.By mixing the inorganic materials, the hybrid solar cells keep both the advantage of the inorganic materials with high carrier mobility and stable chemistry and the merit of the organic materials with good flexibility, available machinability and high absorption coefficient, which makes the hybrid solar cells become one of the hot research topics in photovoltaic field.In this paper, a nano-tree array system with backbone and branches will be designed and produced.Furthermore, the hybrid solar cells with conformal structure from the arrays will be fabrication.The effect of the growth condition of the inorganic nanostructure on the types, quantities and locations of the native defects will be further raveled.In turn, the effect of the type and location of the defects on the properties of the solar cells will be explored.The inorganic nanostructure in the hybrid solar cells will be optimized, thus, the transfers of the electrons with high mobility in the inorganic material and the holes with low mobility in the polymer will be balanced, which will greatly improves the solar photovoltaic conversion efficiency.