NOVELTY - Producing solar cell structure, comprises providing a substrate adhered with electrode on one side and electron-transport layer adhered on the electrode, depositing anodized aluminum structure layer having honeycomb shape containing multiple holes and distributed with precious metal nanoparticles on electron-transport layer, depositing aluminum structure layer on electron-transport layer, and depositing electron-transport layer based on inner periphery of each hole of multiple holes of honeycomb shape, and depositing remaining space of each hole of multiple holes with photoactive layer.    USE - The method is useful for producing solar cell structure (claimed).    ADVANTAGE - The method increases the absorption and reflectivity of the organic solar cells by utilizing the anodized aluminum structure layer distributed with precious gold nanoparticles.    DETAILED DESCRIPTION - Producing solar cell structure, comprises: (i) providing a substrate adhered with an electrode on one side and an electron-transport layer adhered on the electrode; (ii) depositing anodized aluminum structure layer having honeycomb shape containing multiple holes and distributed with precious metal nanoparticles on the electron-transport layer, where the aluminum structure layer is obtained by (a) obtaining aluminum thin films by electrolyzing and grinding high-purity aluminum foil, (b) carrying out primary anodic oxidation treatment on the aluminum thin films in an aqueous solution by applying voltage, (c) forming aluminum thin films having honeycomb shape containing multiple holes by etching the resulting oxide layer, (d) carrying out secondary anodic oxidation treatment on the aluminum thin films in the aqueous solution by applying voltage, (e) depositing the anodized aluminum structure layer with precious metals, and (f) distributing the anodized aluminum structure with the precious metal nanoparticles by heat treatment; (iii) depositing anodized aluminum structure layer having honeycomb shape containing multiple holes and distributed with precious metal nanoparticles on the electron-transport layer; and (iv) depositing the electron-transport layer based on the inner periphery of each hole of the multiple holes of the honeycomb shape, and depositing the remaining space of each hole of the multiple holes with a photoactive layer. INDEPENDENT CLAIMS are also included for an organic solar cell structure, produced by the above mentioned method; and #a solar cell comprising a substrate adhered with an electrode at one side and an electron-transport layer adhered on the electrode, anodized aluminum structure layer having honeycomb shape containing multiple holes deposited on the electron-transport layer, and an upper electrode; where the aluminum structure layer is distributed with the precious metal nanoparticles, the electron-transport layer is formed based on the inner periphery of each hole of the multiple holes of the honeycomb shape, and the remaining space of each hole of the multiple holes is filled with a photoactive layer.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic process flow for producing solar cell structure (Drawing includes non-English language text).