Abstract:
A solar cell having an improved structure of rear surface includes a p-type doped region, a dense metal layer, a loose metal layer, at least one bus bar opening, and solderable material on or within the bus bar opening. The solderable material contacts with the dense aluminum layer. The improved structure in rear surface increases the light converting efficiency, and provides a good adhesion between copper ribbon and solar cell layer thereby providing cost advantages and reducing the complexity in manufacturing. A solar module and solar system composed of such solar cell are also disclosed.
Abstract:
A solar cell having an improved structure of rear surface includes a p-type doped region, a dense metal layer, a loose metal layer, at least one bus bar opening, and solderable material on or within the bus bar opening. The solderable material contacts with the dense aluminum layer. The improved structure in rear surface increases the light converting efficiency, and provides a good adhesion between copper ribbon and solar cell layer thereby providing cost advantages and reducing the complexity in manufacturing. A solar module and solar system composed of such solar cell are also disclosed.
Abstract:
A solar cell substrate with thin film polysilicon. The solar cell substrate includes a substrate; a transparent conductive layer, formed on the substrate; a thermal isolation layer having inlaid conductive layers, formed on the transparent conductive layer; and a polysilicon layer, formed on the thermal isolation layer.
Abstract:
This invention discloses a novel method for fabricating solar cells. Using the existing screen-printing, masking or photolithography techniques, a P-type or N-type diffusion source is coated on the sites of an N-type or P-type silicon wafer desired for forming electrodes. Then, a low dose P-type or N-type diffusion source is in situ diffused into the N-type or P-type silicon wafer together with the P-type or N-type diffusion source coated on the N-type or P-type silicon wafer in the furnace. Thereafter, a P−/P+ or N−/N+ diffusion region is formed within the N-type or P-type silicon wafer. Finally, electrodes aligned to the P+ or N+ diffusion region are formed by means of screen-printing. Then, a solar cell with high photocurrent and low series resistance can be obtained.
Abstract translation:本发明公开了一种制造太阳能电池的新方法。 使用现有的丝网印刷,掩模或光刻技术,在形成电极所需的N型或P型硅晶片的位置上涂覆P型或N型扩散源。 然后,将低剂量P型或N型扩散源原位扩散到N型或P型硅晶片以及涂覆在N型或P-型硅晶片上的P型或N型扩散源, 在炉中形成硅晶片。 此后,在N型或P型硅晶片内形成P- / P +或N- / N +扩散区。 最后,通过丝网印刷形成与P +或N +扩散区对准的电极。 然后,可以获得具有高光电流和低串联电阻的太阳能电池。
Abstract:
A solar cell having an improved structure of rear surface includes a p-type doped region, a dense metal layer, a loose metal layer, at least one bus bar opening, and solderable material on or within the bus bar opening. The solderable material contacts with the dense aluminum layer. The improved structure in rear surface increases the light converting efficiency, and provides a good adhesion between copper ribbon and solar cell layer thereby providing cost advantages and reducing the complexity in manufacturing. A solar module and solar system composed of such solar cell are also disclosed.