NOVELTY - The apparatus (100) has an object supporting element (122) placed inside a chamber (110) and on which an object (180) i.e. substrate, is mounted. A chalcogen source (190) is mounted on a microporous part (124) that is arranged to cover the object supporting element, where the microporous part comprises micropores that are configured to provide a fluid path from the chalcogen source to the object. An inner chamber (127) is placed within the chamber and comprises a bottom surface that is defined by the microporous part. A window element (126) is placed on the microporous part.    USE - Apparatus for manufacturing a photovoltaic cell i.e. solar cell.    ADVANTAGE - The apparatus allows reflection preventing layer to reduce reflection loss of incident solar light during manufacturing, so that the reflection preventing layer reflects light that has passed into the solar cell and reflected internally and escaped back out of the cell, thus improving efficiency of the photovoltaic cell. The chalcogen source is utilized in an optimal amount in performing chalcogenation, so that amount of the chalcogen material consumed is minimized, thus providing more efficient chalcogenation process. The apparatus utilizes chalcopyrite-based compound semiconductor material, as a light absorption layer in a compound thin film photovoltaic cell, thus promoting chalcogenation.    DETAILED DESCRIPTION - The microporous part includes graphite with a density of about 1.75 to 1.86 gram per cubic centimeter and with a porosity of about 6 to 11 percentage. The gas liquid or gas portion evaporated from the chalcogen source comprises sulfur and selenium. The object comprises copper, indium, and gallium.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of an apparatus for manufacturing a photovoltaic cell.    Manufacturing apparatus (100)    Chamber (110)    Object supporting element (122)    Microporous part (124)    Window element (126)    Inner chamber (127)    Object (180)    Chalcogen source (190)