Preparation method of zinc oxide thin film by irradiation and organic solar cell including the zinc oxide thin film

摘要

The present invention relates to a process for preparing a zinc oxide sol-gel precursor solution and irradiating the zinc oxide sol-gel precursor solution with radiation (step 1); And a step (step 2) of forming a zinc oxide thin film having vertical orientation on the substrate with the zinc oxide sol-gel precursor solution irradiated with the radiation (step 2). The zinc oxide thin film manufacturing method according to the present invention is advantageous in that zinc oxide thin film having vertical orientation at low temperature (300 ° C or less) can be produced by irradiating the zinc oxide sol-gel precursor solution with radiation. The present invention also relates to a zinc oxide thin film having a vertical orientation prepared from a radiation-irradiated zinc oxide sol-gel precursor solution. The zinc oxide thin film according to the present invention is advantageous in charge transfer due to its vertical orientation. Further, the present invention relates to a substrate comprising: a substrate; A first electrode formed on the substrate; An electron transport layer formed on the first electrode; Wherein the electron transport layer comprises the zinc oxide thin film of claim 11, the photoactive layer formed on the electron transport layer, A hole transport layer formed on the photoactive layer; And a second electrode formed on the hole transport layer, and a method of manufacturing the organic solar cell. The organic solar cell according to the present invention can exhibit excellent efficiency by applying a zinc oxide thin film having vertical orientation as an electron transporting layer.