Fabrication method for quantum dot sensitized solar cell using supercritical fluid or subcritical fluid and quantum dot sensitized solar cell prepared thereby

Abstract

A method of fabricating a transparent electrode for use in a quantum dot sensitized solar cell, and a quantum dot sensitized solar cell fabricated according to the method are provided. According to the fabrication method, (S1) quantum dot precursor is introduced into a high pressure storage vessel and a quantum dot precursor is dissolved using subcritical fluid or supercritical fluid; (S2) the quantum dot precursor fluid prepared at (S1) is transported to contact with a conductive thin layer substrate comprised of a metal oxide placed in a high pressure reaction vessel, thereby causing the quantum dot precursor to be adsorbed in the metal oxide thin layer; (S3) non-adsorbed quantum dot precursor fluid of (S2) is transported and thus recovered to the high pressure storage vessel together with the subcritical fluid or supercritical fluid; and (S4) the subcritical fluid or supercritical fluid is removed from the high pressure reaction vessel, and the quantum dot precursor, adsorbed at (S2), is reacted with a second element which constitutes the quantum dot or a compound comprising the second element.