摘要:
A photovoltaic element is provided which has a high conversion efficiency, a low-cost producibility, a light weight and good overall characteristics in a final product form with a transparent protective member. The photovoltaic element comprises a first pin junction comprising an i-type amorphous semiconductor, a second pin junction comprising an i-type microcrystalline semiconductor, and a third pin junction comprising an i-type microcrystalline semiconductor provided in the mentioned order from a light incidence side, wherein at least a transparent protective member and a transparent electrode layer are provided on the light incidence side of the first pin junction, and wherein of the photocurrents generated at the plurality of pin junctions, the photocurrent generated at the third pin junction is the smallest.
摘要:
A multijunction solar cell comprising a silicon solar cell with a germanium solar cell formed on the backside of the silicon solar cell. The silicon solar cell and germanium solar cell are directly coupled via a p-p junction to inactivate interface dislocations. Preferably, the silicon solar cell comprises a p++ type silicon layer; an intrinsic silicon layer formed on the p++ type silicon layer; an n++ type silicon layer formed on the intrinsic type silicon layer; and a p-type silicon layer formed on the n++ type silicon layer. The germanium solar cell preferably comprises an n-type germanium layer; and a p-type germanium layer form on the n-type germanium layer. The p-type germanium layer is coupled to the p++ type silicon layer.
摘要:
A thin-film solar cell comprises a set of a transparent conductive layer and a photoelectric conversion layer laminated in this order on a substrate, wherein the photoelectric conversion layer is made of a p-i-n junction, the i-layer is made of a crystalline layer and the transparent conductive layer is provided with a plurality of holes at its surface of the side of the photoelectric conversion layer, each of said holes having irregularities formed on its surface.
摘要:
In a method of manufacturing a silicon-based thin film photoelectric converter, a crystalline photoelectric conversion layer included in the photoelectric converter is deposited by plasma CVD under the following conditions: the temperature of the underlying film is at most 550° C.; a gas introduced into a plasma reaction chamber has a silane-based gas and a hydrogen gas where the flow rate of the hydrogen gas relative to the silane-based gas is at least 50 times; the pressure in the plasma reaction chamber is set to 3 Torr; and the deposition speed is 17 nm/min in the thickness-wise direction.
摘要:
A solar cell includes a first conductivity type silicon substrate, a second conductivity type layer of microcrystalline or amorphous silicon deposited on the substrate in a plasma process and consuming an oxide film no more than 2 nanometers thick formed on the substrate before depositing the second conductivity type layer, a transparent electrode layer disposed on the second conductivity type layer, a grid electrode disposed on the transparent electrode layer, and an electrode disposed on the substrate. A method for producing a solar cell includes forming a silicon oxide film on a first conductivity type silicon substrate to a thickness not exceeding 2 nanometers by immersing the substrate in heated nitric acid, depositing a second conductivity type layer of microcrystalline or amorphous silicon on the silicon oxide film in a plasma, the silicon oxide film being consumed during deposition of the second conductivity type layer, and forming respective electrodes on the substrate and the second conductivity type layer.
摘要:
A photovoltaic device has a crystalline layer of a first conductivity type formed of crystalline silicon semiconductor material, an amorphous layer of an opposite conductivity type formed of amorphous silicon semiconductor material, and a microcrystalline layer formed of substantially intrinsic microcrystalline silicon semiconductor material provided between the crystalline layer and the amorphous layer.
摘要:
A heterojunction solar cell and a preparation method therefor. The heterojunction solar cell comprises: a semiconductor substrate layer; and a back composite transparent conductive film located on one side of the semiconductor substrate layer. The back surface composite transparent conductive film comprises: a first back surface transparent conductive film; and a second back transparent conductive film located on the side surface of the first back transparent conductive film facing away from the semiconductor substrate layer. Both the first back transparent conductive film and the second back transparent conductive film are doped with group III heavy atoms, and the concentration of the group III heavy atoms in the second back transparent conductive film is less than that of the group III heavy atoms in the first back transparent conductive film.
摘要:
Embodiments of the present disclosure provide a solar cell and a solar cell module. The solar cell includes a first region and a second region, and further includes a substrate having a first surface and a second surface; a tunneling layer covering the second surface; a first emitter formed on part of the tunneling layer in the first region; and a second emitter formed on part of the tunneling layer in the second region and on the first emitter, a conductivity type of the second emitter being different from a conductivity type of the first emitter. The solar cell further includes a first electrode configured to electrically connect with the first emitter by penetrating through the second emitter; and a second electrode formed in the second region and configured to electrically connect with the second emitter.
摘要:
The present disclosure pertains to the field of back contact heterojunction cell technologies, and particularly relates to a mask-layer-free hybrid passivation back contact cell and a fabrication method thereof; the method includes: S101: providing a silicon wafer substrate; S102: sequentially forming a first semiconductor layer and a mask layer on a back surface of the silicon wafer substrate, wherein the first semiconductor layer includes a tunneling oxide layer and a first doped polycrystalline layer; S103: performing first etching on the first semiconductor layer on the obtained back surface to form first opening regions W1; S104: forming a textured surface in the first opening region W1 on the back surface by texturing and cleaning; S105: removing the mask layer; S106: forming a second semiconductor layer on the obtained back surface; and S107: performing second etching on a polished region of the obtained back surface.
摘要:
Embodiments of the present disclosure provide a solar cell and a solar cell module. The solar cell includes a first region and a second region, and further includes a substrate having a first surface and a second surface; a tunneling layer covering the second surface; a first emitter disposed on part of the tunneling layer in the first region; and a second emitter disposed on part of the tunneling layer in the second region and on the first emitter, a conductivity type of the second emitter being different from a conductivity type of the first emitter. The solar cell further includes a first electrode disposed in the first region and configured to electrically connect with the first emitter by penetrating through the second emitter; and a second electrode disposed in the second region and configured to electrically connect with the second emitter.