Abstract:
According to an embodiment of the present invention, a tandem solar cell comprises a CIGS solar cell mounted on a lower part; a DSSC solar cell mounted on the upper part of the CIGS solar cell; and an anti-reflection coating (ARC) layer mounted between the CIGS solar cell and the DSSC solar cell, wherein the CIGS solar cell and the DSSC solar cell are electrically connected to each other and stacked. The tandem solar cell according to the embodiment of the present invention can increase the light transmittance and obtain a photo current at low thickness by reducing a light scattering effect due to TiO2 light absorbing layer consisting of TiO2 particles which have less than and equal to 20 nm of a diameter, and the ARC layer.
Abstract:
PURPOSE: A methanoflullerene derivative is provided to obtain high energy conversion efficiency and open circuit voltage of high level through a combination of polymer electron donor because of excellent solubility and high LUMO energy level, and excellent solubility. CONSTITUTION: A methanoflullerene derivative is represented by chemical formula 1. In chemical formula 1, A is C60 or C70 fullerene, R1-R4 is respectively substituted or unsubstituted C1-20 alkyl, a substituted or unsubstituted C6-40 aryl or substituted or unsubstituted C3-40 heteroaryl, where a first added group(R1,R2) and a second added group(R3,R4) are different each other. A substituent of R1-R4 is one or more selected from C1-20 alkyl, C1-20 alkoxy, C6-40 aryl, C6-40 aryl, C6-40 aralkyl, C6-40 alyklaryl, C6-40 aralkoxy, C4-40 heteroaryl, C3-30 cycloalkyl, C1-30 alkylcarbonyl, C1-30 alkoxycarbonyl, C3-30 heterocycloalkyl, hydroxy, carboxy, amino, cyano, nitro, and halogen.
Abstract:
PURPOSE: A flexible photo electrode and a manufacturing method thereof and a dye-sensitized solar cell using the same are provided to improve photoelectric efficiency by using a flexible photo electrode as a semiconductor electrode. CONSTITUTION: A first substrate is formed including a porous film, an adhesion layer, and a flexible transparent substrate(102). A flexible transparent substrate and a second substrate including the adhesion layer and the porous film formed on the flexible transparent substrate are formed by separating a high temperature resistance substrate from the first substrate with a transfer process. A conductive non-metal film(105) is formed on the porous film of the second substrate, the side of the adhesion layer, and the flexible transparent substrate. A third substrate comprises the flexible transparent substrate, the adhesion layer formed on the flexible transparent substrate, the porous film, and the conductive non-metal film. Dye is adsorbed on a surface of the porous film of the third substrate.