Abstract: Disclosed is a thin film characteristic measuring apparatus, which is used for measuring the thickness or width of a thin film of an object to be examined. The thin film characteristic measuring apparatus comprises a light source, a first reflecting mirror, a first actuator and a lens assembly. The lens assembly is formed so that the angle formed by an optical axis and a chief ray of the rays transmitted through the lens assembly is less than or equal to the angle formed by the optical axis and a chief ray of the rays incident to the lens assembly. The light source can comprise superluminescent diodes (SLD).

Abstract: Discussed is a tandem solar cell manufacturing method including etching a crystalline silicon substrate, whereby a solar cell can be obtained which does not have a pyramid-shaped defect on a surface of the substrate, inhibits the generation of a shunt through the substrate having excellent surface roughness properties, and can secure fill factor properties, the solar cell being capable of being obtained through the tandem solar cell manufacturing method. The method includes preparing a crystalline silicon substrate; performing an isotropic etching process of the substrate; and removing a saw damage on a surface of the substrate by performing an anisotropic etching process of the isotropically etched substrate.

Abstract: The present disclosure relates to a tandem solar cell and a method of manufacturing the same, and more particularly, to a tandem solar cell having a perovskite solar cell stacked on and bonded to a silicon solar cell and a method of manufacturing the same. According to the present disclosure, a tandem solar cell embodied by using a homojunction silicon solar cell is provided with a first passivation pattern so that a part of an emitter layer under the first passivation pattern is exposed, thereby protecting, by the first passivation pattern, the emitter layer during high temperature firing for forming a second electrode, reducing surface defects of the emitter layer, and reducing a problem in that characteristics of the perovskite solar cell are degraded.

Abstract: The present disclosure relates to a method for manufacturing a monolithic tandem solar cell in which a perovskite solar cell is laminated and bonded on a silicon solar cell. According to the present disclosure, a first microporous precursor thin film is formed through a sputtering method on a substrate having an unevenly structured texture and then a halide thin film is formed on the first microporous precursor thin film to form a perovskite absorption layer, whereby light reflectance can be reduced and a path of light can be increased, and accordingly a light absorption rate can be increased.

Abstract: The present invention relates to a method for manufacturing: a perovskite solar cell in which the laminated shape and the composition of a perovskite absorbing layer are controlled; and a tandem solar cell comprising the perovskite solar cell, and the perovskite absorbing layer is formed through a method for manufacturing a solar cell, comprising the steps of: forming, on a substrate, an inorganic seed layer conformal with the substrate by using a BO source, an A-doped BO source or an AxOy source and the BO source; and supplying organic halides onto the seed layer, and thus a perovskite thin film having a complex composition conformal with the substrate can be formed such that an effect of enabling light absorption to increase can be achieved.

Abstract: The present invention relates to a method for manufacturing: a perovskite solar cell in which the laminated shape and the composition of a perovskite absorbing layer are controlled; and a tandem solar cell comprising the perovskite solar cell, and the perovskite absorbing layer is formed through a method for manufacturing a solar cell, comprising the steps of: forming, on a substrate, an inorganic seed layer conformal with the substrate by using a BO source, an A-doped BO source or an AxOy source and the BO source; and supplying organic halides onto the seed layer, and thus a perovskite thin film having a complex composition conformal with the substrate can be formed such that an effect of enabling light absorption to increase can be achieved.

Abstract: Discussed is a tandem photovoltaic cell and a manufacturing method thereof and, more specifically, to a monolithic tandem photovoltaic cell in which a perovskite photovoltaic cells is laminated and bonded on a silicon photovoltaic cell and a manufacturing method thereof. According to the present disclosure, the tandem photovoltaic cell includes: a substrate on which a texture having both valley and peak portions is formed; and a perovskite adsorption layer formed on the substrate. By providing the tandem photovoltaic cell in which valley and peak portions are rounded and the manufacturing method thereof, the efficiency of the tandem photovoltaic cell may be uniformly improved over the entire panel and avoid a short circuit of an inter-layer.

Abstract: Discussed is a tandem solar cell manufacturing method including etching a crystalline silicon substrate, whereby a solar cell can be obtained which does not have a pyramid-shaped defect on a surface of the substrate, inhibits the generation of a shunt through the substrate having excellent surface roughness properties, and can secure fill factor properties, the solar cell being capable of being obtained through the tandem solar cell manufacturing method. The method includes preparing a crystalline silicon substrate; performing an isotropic etching process of the substrate; and removing a saw damage on a surface of the substrate by performing an anisotropic etching process of the isotropically etched substrate.

Abstract: The present disclosure relates to a method for manufacturing a monolithic tandem solar cell in which a perovskite solar cell is laminated and bonded on a silicon solar cell. According to the present disclosure, a first microporous precursor thin film is formed through a sputtering method on a substrate having an unevenly structured texture and then a halide thin film is formed on the first microporous precursor thin film to form a perovskite absorption layer, whereby light reflectance can be reduced and a path of light can be increased, and accordingly a light absorption rate can be increased.

Abstract: The present invention relates to a perovskite solar battery and a tandem solar battery including the same and, more particularly, to a perovskite solar battery, which can ensure reliability and large area uniformity, and a tandem solar battery. According to the present invention, provided are the perovskite solar battery and the tandem solar battery including the same, the perovskite solar battery facilitating reliability and a band gap control by respectively applying a p-type Si thin film layer and an n-type Si thin film layer to a hole transport layer and an electron transport layer, and thus a lifespan and light conversion efficiency can increase.

Abstract: The present disclosure relates to a tandem solar cell and a method of manufacturing the same, and more particularly, to a tandem solar cell having a perovskite solar cell stacked on and bonded to a silicon solar cell and a method of manufacturing the same. According to the present disclosure, a tandem solar cell embodied by using a homojunction silicon solar cell is provided with a first passivation pattern so that a part of an emitter layer under the first passivation pattern is exposed, thereby protecting, by the first passivation pattern, the emitter layer during high temperature firing for forming a second electrode, reducing surface defects of the emitter layer, and reducing a problem in that characteristics of the perovskite solar cell are degraded.

Abstract: The present disclosure relates to a tandem solar cell, a tandem solar cell module comprising the tandem solar cell, and a method for manufacturing the same. More specifically, the present disclosure relates to a monolithic tandem solar cell comprising a perovskite solar cell laminated on a front surface of a crystalline silicon solar cell, and a method for manufacturing the same. According to the present disclosure, a Nano-electrode structure can be patterned on a front surface of a front transparent electrode of a solar cell in which a crystalline silicon solar cell and a perovskite solar cell are bonded via a junction layer, such that the optical path of the sunlight incident on the solar cell through the Nano-electrode structure can be increased to improve the utilization rate of the light.

Abstract: A thin-film solar cell having a first solar cell layer with a plurality of unit cells including a photoelectric conversion layer that are connected in series; a second solar cell layer with a plurality of unit cells including a photoelectric conversion layer that are connected in series, and that has band gap energy different from the first solar cell layer and a threshold voltage coincident with the first solar cell layer; and an electrode connector, that connects the first solar cell layer with the second solar cell layer in parallel.

Abstract: The present invention relates to a high efficiency solar cell and a manufacturing method thereof. The high efficiency solar cell of the present invention comprises a lower solar cell layer comprising a single crystalline silicon-based pn thin film; an upper solar cell layer stacked on the upper portion of the lower solar cell layer and comprising an amorphous silicon-based pin thin film; and a glass substrate formed on the upper portion of the upper solar cell layer to receive sunlight. According to the present invention, it has an effect that a low-cost high efficiency solar cell can be manufactured.

Abstract: Disclosed are a method for manufacturing a thin-film type solar cell and a thin-film type solar cell obtained thereby that uses a direct printing method and reduces the frequency of a cutting process.

Abstract: A photovoltaic device module and a fabrication method thereof are disclosed. There are provided a solar cell module structure effective to prevent the performance of the overall module from being degraded when photoelectric conversion efficiency of a specific portion cell is degraded in a solar cell module in which solar cells are integrated, and a fabrication method thereof. More particularly, there are provided a module structure having two terminal wirings, in which one of them is formed by selecting and connecting at least two unit cells from a plurality of unit cells electrically connected and the other is formed by selecting and connecting at least two unit cells differentiated from the said selected unit cells., and a fabrication method thereof.

Abstract: The present invention relates to a thin-film solar cell and a fabrication method thereof, the solar cell having a structure that a glass substrate, a transparent conductive oxide, a multi-junction solar cell layer and an electrode layer are stacked, wherein a first solar cell layer and a second solar cell layer, which are in a multi-junction, are electrically connected with each other in parallel, and one or more unit cells connected in parallel are grouped to be electrically connected with each other in series. According to the present invention, a thin-film solar cell having a unit cell in a structure that two solar cell layers having different characteristics are connected with each other in parallel, and having a structure that several unit cells are connected with each other in series, can achieve higher output and efficiency than a thin-film solar cell having a structure that several solar cell layers are connected in series.

Abstract: The present invention relates to a photovoltaic conversion apparatus including a by-pass diode and a manufacturing method thereof. The photovoltaic conversion apparatus of the present invention comprises at least one unit solar cell module configured of at least one unit solar cell; and a by-pass solar cell module including at least one solar cell electrically connected to the unit solar cell to by-pass current. According to the present invention, a photovoltaic conversion apparatus having high photoelectric conversion efficiency can be manufactured. Also, the photovoltaic conversion apparatus will contribute to earths environmental conservation as the next clean energy source and can be directly applied to private facilities, public facilities, military facilities, etc., to create enormous economic value.

Abstract: The present invention discloses a thin-film type solar cell including another upper transparent conductive layer between a silicon semiconductor layer and an upper transparent conductive layer, and a manufacturing method thereof. At this time, the silicon based semiconductor layer used may be formed of at least one amorphous silicon based (p/i/n) thin film or may be formed as a tandem type silicon based semiconductor layer formed of the amorphous silicon based (p/i/n) thin film, an intermediate transparent conductive layer, and a microcrystalline silicon based thin film.

Abstract: A thin-film solar cell of the present invention comprises a first solar cell layer that a plurality of unit cells including a photoelectric conversion layer are connected in series; a second solar cell layer that a plurality of unit cells including a photoelectric conversion layer are connected in series, which has band gap energy being different from the first solar cell layer and a threshold voltage being coincident with the first solar cell layer; and an electrode connector, which connects the first solar cell layer with the second solar cell layer in parallel. The thin-film solar cell of the present invention provides a solar cell structure and a method of manufacturing the same, which is capable of increasing the efficiency by increasing the maximum output of the thin film solar cell formed of both the solar cell layers having the different characteristics.