Abstract: Disclosed are a p-doped conjugated polymer electrolyte and an organic electronic device using the same. The p-doped conjugated polymer electrolyte according to the present invention not only has an outstanding hole-transport capability but can also act as an electron-blocking layer and hence can be used in organic electronic devices, such as organic light-emitting devices or organic solar cells, in order to improve the light-emitting efficiency of the organic light-emitting device or the energy-conversion efficiency of the organic solar cell. Also, because the charge on the p-doped conjugated polymer electrolyte is almost completely neutral, the present invention can solve the problem of anode corrosion and make a positive contribution to increased life-cycle of the device.

Abstract: Provided is a parallel-type tandem organic solar cell. The parallel-type tandem organic solar cell includes: a first electrode; a first photoactive layer formed on the first electrode; a conductive polymer electrode formed on the first photoactive layer; a second photoactive layer formed on the conductive polymer electrode; a second electrode formed on the second photoactive layer; and a connection unit oriented in the direction ranging from the second electrode toward the first electrode so as to electrically connect the first electrode and the second electrode. According to the present invention, the energy conversion efficiency of the cell is improved by the increased photocurrent. Further, the solar cell of the present invention is advantageous in that an intermediate electrode can be made from solution-processable conductive polymers, and each element of the solar cell has a parallel structure, thereby simplifying manufacturing processes and reducing manufacturing costs.

Abstract: The invention relates to a tandem organic solar cell using a polyelectrolyte layer and a method for manufacturing same. The tandem organic solar cell comprises a first electrode, a first organic photoactive layer, a recombination layer, a second organic photoactive layer, and a second electrode. The recombination layer includes an n-type semiconductor material layer and a conjugated polyelectrolyte layer.

Abstract: A light emitting device may include a first electrode on a substrate, a first emission layer on the first electrode, a buffer layer on the first emission layer, a middle electrode on the buffer layer, a second emission layer on the middle electrode, and a second electrode on the second emission layer. The buffer layer may include a material selected from the group consisting of a metal oxide, a polyelectrolyte, and a combination thereof. The first emission layer, buffer layer, middle electrode, and second emission layer may be fabricated using a wet process.

Abstract: A method of preparing a wet-processible metal oxide solution and a method of fabricating a film using the same are provided. A metal oxide that has been widely used as a photocatalyst is improved and a metal oxide solution having new functionality is formed. The metal oxide solution is transparent, wet-processible, and facilitates electron transfer. The metal oxide solution can be applied in various ways to an electronic device and is well-suited for application to an electronic device using organic materials. Also, a titanium oxide solution functions to remove and block oxygen and moisture. Thus, when it is applied to an electronic device using organic materials that are vulnerable to oxygen and moisture, the lifetime of the device can be increased.

Abstract: Provided are an organic-inorganic hybrid junction device in which organic and inorganic materials are connected by junction, and a depletion layer is formed at a junction interface, and an organic photovoltaic cell using the same. A basic metal oxide solution is applied to a top surface of a P-doped organic layer. The basic metal oxide solution has N-type characteristics. An oxidation-reduction reaction occurs in response to the application of the basic metal oxide solution at a junction interface of the organic layer, and the metal oxide layer is simultaneously gelated. A free charge is removed from a surface region of the P-doped organic layer by the oxidation-reduction reaction at the interface, which is converted into a depletion region. According to the introduction of the depletion region, P-N junction occurs, and thus the device has a diode characteristic in an electrical aspect. Also, an organic photovoltaic cell including the organic layer, the depletion layer and the metal oxide layer is fabricated.