摘要:
A method of manufacturing a buffer layer for a thin film solar cell includes preparing a reaction solution including an ammonia compound, a zinc source, and a sulfur source at a temperature below 70° C.; and immersing a substrate on which an optical absorption layer is formed in the reaction solution. The concentration of the zinc source in the reaction solution is in the range of about 0.01M to about 0.09M.
摘要:
A composite cathode active material includes: a core including a material capable of intercalation and deintercalation of lithium; and a first coating layer on at least one portion of the core, where the first coating layer includes zirconium oxide. A lithium battery includes a cathode including the composite cathode active material. Methods of preparing the composite cathode active material are also disclosed.
摘要:
A method of recycling a solution, the method including: filtering a solution used in chemical bath deposition; reinflowing the filtered solution to a bath; and inflowing an alkali solution to the bath to maintain a concentration of an alkaline material in the filtered solution in a range of about 1.0 M to about 3.5 M, is disclosed. A solar cell formed by the method and a deposition apparatus are also disclosed. By the method of recycling a solution, a solar cell including a buffer layer formed with a solution which has been used multiple times may be formed to have an efficiency almost the same as that of a solar cell including a buffer layer formed with a solution provided for the first time before filtering.
摘要:
A deposition apparatus and a method for recycling a solution. The deposition apparatus includes a bath in which a solution used in a chemical bath deposition (CBD) method is filled, a tank in which the solution used in the CBD method is temporarily stored, and a filter unit for filtering the solution stored in the tank to be reused in the CBD method again. Thus, when a buffer layer is formed by the CBD method, the number of times of reusing the solution for forming the buffer layer may be increased.
摘要:
A composite cathode active material includes: a core including a material capable of intercalation and deintercalation of lithium; and a first coating layer on at least one portion of the core, where the first coating layer includes zirconium oxide. A lithium battery includes a cathode including the composite cathode active material. Methods of preparing the composite cathode active material are also disclosed.
摘要:
A composite cathode active material including a core comprising a lithium compound, and a coating layer formed on at least one portion of the core and including at least two oxide phases having different structures, a cathode and a lithium battery including the same, and a method of preparing the composite cathode active material.
摘要:
A composite cathode active material including a core comprising a lithium compound, and a coating layer formed on at least one portion of the core and including at least two oxide phases having different structures, a cathode and a lithium battery including the same, and a method of preparing the composite cathode active material.
摘要:
A solar cell including a light absorption layer including a p-type compound semiconductor; and a buffer layer including a first buffer layer and a second buffer layer on the light absorption layer, the second buffer layer being between the first buffer layer and light absorption layer, and a zinc sulfide (ZnS) concentration of the first buffer layer being greater than a ZnS concentration of the second buffer layer is disclosed. Methods of manufacturing the solar cell are also disclosed.
摘要:
The present invention relates to a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive electrode includes: a current collector; and a positive electrode active material positioned on at least one surface of the active material layer current collector. The positive electrode active material layer includes a small particle size active material having an average particle diameter D50 of 2 μm to 4 μm and a first coating layer positioned at a surface thereof, and a large particle size active material having an average particle diameter D50 of 17 μm to 21 μm and a second coating layer positioned at the surface thereof.