Solar cell device and manufacturing method thereof
A technology of solar cells and manufacturing methods, which is applied in semiconductor/solid-state device manufacturing, electrical solid-state devices, electrical components, etc., can solve the problems of uneven film layers and uneven surface protrusions, achieve high collection efficiency, easy operation, and reduce The effect of resistance
Pending Publication Date: 2022-05-10
HUANENG NEW ENERGY CO LTD +1
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Problems solved by technology
Due to the high height of the grid line (much greater than the thickness of the subsequent film layer), obvious protrusions will be formed on the surface of the substrate, and the shadow effect on the edge of the grid line will cause the film layer to be uneven at the edge of the grid line and the rest of the position. In addition, the taller grid line will cause The surface is bumpy and uneven, and it is difficult to prepare related film layers such as transmission layer and absorption layer by coating
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[0035] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings.
[0036] In the following description, a lot of specific details are set forth in order to fully understand the application, but the application can also be implemented in other ways different from those described here, and those skilled in the art can do it without violating the content of the application. By analogy, the present application is therefore not limited by the specific embodiments disclosed below.
[0037] Secondly, the present application is described in detail in combination with schematic diagrams. When describing the embodiments of the present application in detail, for the convenience of explanation, the cross-sectional view showing the device structure will not be partially enlarged...
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Abstract
According to the solar cell device and the manufacturing method thereof, the transparent conductive film layer can be formed on the substrate, the etching groove can be obtained by etching the transparent conductive film layer, the metal structure can be formed in the etching groove, and the transparent conductive film layer and the metal structure can be used as a lower electrode. A functional layer and an upper electrode can be sequentially formed on the transparent conductive film layer, and the functional layer is used for generating and transmitting photon-generated carriers. In the embodiment of the invention, the resistance of the lower electrode is reduced due to the existence of the metal structure, so that the lower electrode has higher carrier collection efficiency, and the metal structure is arranged in the etching groove, so that the formed lower electrode has a smoother upper surface, a more uniform functional layer and an upper electrode can be obtained through simple operation, and the yield of the device is improved. Therefore, a high-performance device can be obtained by simple operation.
Description
technical field [0001] The present application relates to the field of energy technology, in particular to a solar cell device and a manufacturing method thereof. Background technique [0002] Solar thin-film battery, also known as solar chip or photovoltaic cell, is a photoelectric device that uses sunlight to generate electricity directly. The solar cell includes a first electrode, an electron transport layer, a light absorption layer, a hole transport layer and a second electrode. Electron-hole pairs can be generated under light, and electrons can be transported to the first electrode through the electron transport layer, and holes can be transported to the second electrode through the hole transport layer, thereby generating electric current. The electron transport layer, light absorbing layer, hole transport layer, etc. may be referred to as functional layers. [0003] In particular, for solar thin-film cells with a reverse structure, the first electrode layer is the l...
Claims
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IPC IPC(8): H01L51/48H01L51/44
CPCH10K71/12H10K71/621H10K30/81H10K30/82Y02E10/549
Inventor 肖平李新连丁坤赵志国张赟夏渊李梦洁秦校军冯笑丹文军
Owner HUANENG NEW ENERGY CO LTD