Abstract:
PURPOSE: A method for manufacturing a chalcogenide solar cell with a double texture structure formed on the surface of a back electrode, and the chalcogenide solar cell manufactured by the same are provided to increase light capturing performance conversion efficiency, thereby improving photoelectric conversion efficiency. CONSTITUTION: A back electrode (30) is formed on the substrate. A light absorption layer (40) of a chalcogenide semiconductor material is formed on the back electrode. A buffer layer (50) is formed on the light absorption layer. A transparent electrode is formed on the buffer layer. A front texture (62) is formed on the surface of the transparent electrode.
Abstract:
PURPOSE: A method for preparing a CIGS-based thin film solar cell using a Na-free substrate and a solar cell prepared by the same are provided to improve the efficiency of the solar cell by forming a thin film solar cell module. CONSTITUTION: A molybdenum electrode is formed on a Na-free substrate (S1). An Na source thin film is formed on a part of the surface of the substrate including the molybdenum electrode (S2). A CIGS-based precursor thin film is formed on the substrate including the Na source thin film (S3). The Na of an Na source is diffused into the CIGS-based thin film (S4) by a thermal selenization process. [Reference numerals] (AA) Start; (BB) Form a molybdenum electrode on the surface of an Na-free substrate; (CC) S1 step; (DD) Form an Na source thin film on a part of the surface of the substrate including the molybdenum electrode; (EE) S2 step; (FF) Form a CIGS-based precursor thin film; (GG) S3 step; (HH) Diffuse Na of an Na source into the CIGS-based thin film through selenide heat treating; (II) S4 step; (JJ) End
Abstract:
PURPOSE: A CIS/CIGS based solar cell including a rear TCO(Transparent Conducting Oxide) layer is provided to maximize the amount of incident light by removing a disturbance to reduce the amount of incident light. CONSTITUTION: A first molybdenum electrode and a second molybdenum electrode are separated on a substrate with a preset space. The first molybdenum electrode and the second molybdenum electrode are arranged on the substrate in parallel. A TCO layer(30) is arranged on the upper side and the lateral side of the second molybdenum electrode. A buffer layer(40) is arranged on the upper side and the lateral side of the TCO layer. A light absorption layer(50) is arranged on the buffer layer and the first molybdenum electrode.