Solar cell device and manufacturing method thereof
A technology for solar cells and devices, which is used in the manufacture of semiconductor/solid-state devices, electric solid-state devices, electrical components, etc., can solve the problems of devices with stable performance, affect the electron collection efficiency of perovskite solar cells, and affect the perovskite solar cells. Photoelectric conversion efficiency and other issues, to achieve the effects of high electron mobility, improved photostability, and high photoelectric conversion efficiency
Inactive Publication Date: 2021-12-10
HUANENG NEW ENERGY CO LTD +1
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[0004] Currently, TiO 2 It is the most commonly used electron transport material in perovskite solar cells, but its electron mobility is 0.1-1cm 2 V -1 the s -1 , smaller than perovskite (CH 3 NH 3 PB 3 ) mobility (20~30cm 2 V -1 the s -1 ), affect the electron collection efficiency in perovskite solar cells, and then affect the photoelectric conversion efficiency of perovskite solar cells, while TiO 2 It has photocatalytic properties, which reduces the stability of perovskite solar devices under light conditions, which is not conducive to obtaining devices with stable performance
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[0033] 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.
[0034] 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.
[0035] Secondly, the present application is described in detail in conjunction 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
The invention provides a solar cell device and a manufacturing method thereof. The solar cell device can comprise a first electrode, an electron transmission layer, a perovskite light absorption layer, a hole transmission layer and a second electrode which are sequentially stacked in the longitudinal direction, wherein the electron transport layer is made of cadmium sulfide. According to the invention, due to the fact that cadmium sulfide has an energy band better matched with a perovskite material and higher electron mobility, the device can have higher photoelectric conversion efficiency; and compared with titanium dioxide, cadmium sulfide does not have the photocatalytic property while can absorb light wave bands with higher energy, so that the light stability of perovskite can be improved.
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] Organic-inorganic hybrid perovskite is a bipolar semiconductor material with low cost, easy film formation, suitable band gap, large molar extinction coefficient, high carrier mobility and long life. Perovskite solar cell devices have the advantages of high open circuit voltage, low cost and large-scale preparation, and simple structure. In 2012, Nam-Gyu Park et al. used Spiro-OMeTAD as a solid-state hole transport material to prepare all-solid-state perovskite solar cells for the first time. The stability of perovskite solar cells was greatly improved, and then perovskite solar cells were obtained. More and more scientific researchers and commercial personnel are paying attention. After years of development, the battery efficiency has repeatedly hit new highs, and the battery structu...
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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K30/15H10K2102/00Y02E10/549
Inventor 李梦洁李卫东赵志国秦校军李新连熊继光刘家梁夏渊文军丁坤冯笑丹
Owner HUANENG NEW ENERGY CO LTD