NOVELTY - The solar cell has an electrode reformed layer and a photoactive layer (601) formed between two transparent electrodes (201, 301). An organic layer is formed with a floor layer. One of the electrodes is faced with the other electrode. The latter electrode is equipped with a substrate (101). A two-layer structure is formed with a metal oxide layer. The electrode reformed layer is arranged with a metal oxide layer (401) and an alkali halides metal layer (501) that are formed with each other. Thickness of the alkali halides metal layer is less than thickness of the metal oxide layer.    USE - Organic solar cell.    ADVANTAGE - The solar cell is formed with the organic layer and the electrodes so as to improve contact feature and reduce charge injection obstacle through an energy barrier modulation unit and prevent recombination of the electric charge unit, thus improving electron transport capability, short circuit electric current density, processing efficiency and charging rate. The low thermal annealing temperature is applied to the substrate of a plastic material so as to effectively manufacture the solar cell and reduce processing cost.    DETAILED DESCRIPTION - A cell body is made of metal oxide. The metal oxide comprises zinc oxide, titanium oxide, nickel oxide, ruthenium tetroxide, vanadium, oxygen, tungsten dioxide, cesium, carbon monoxide, molybdenum dioxide, zirconium hydroxide, tantalum and magnesium oxide. The alkali halides metal layer is made of lithium fluoride, sodium fluoride, potassium fluoride, rubidium fluoride, cesium fluoride, francium fluoride, beryllium fluoride, magnesium fluoride, calcium fluoride, barium fluoride and radium fluoride. The substrate is a flexible printed circuit board. The substrate is made of glass, polymer and metal. An INDEPENDENT CLAIM is also included for a method for manufacturing an organic solar cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of an organic solar cell.    Substrate (101)    Transparent electrodes (201, 301)    Metal oxide layer (401)    Alkali halides metal layer (501)    Photoactive layer (601)