Photoelectric conversion device and its photoelectric conversion element
A technology for photoelectric conversion elements and photoelectric conversion devices, applied in electrical components, photovoltaic power generation, circuits, etc., can solve problems such as process fragmentation and warpage of solar cells, and achieve the effects of reducing impedance, increasing photocurrent, and reducing warpage.
Active Publication Date: 2008-04-23
UNITED RENEWABLE ENERGY CO LTD
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Problems solved by technology
[0005] The existing conventional aluminum (Al) metal layer 14 and the formation of the metal electrode pair 13 must go through a high temperature sintering step, due to the shrinkage of the sintering process, and due to the metal The difference in thermal expansion coefficient between the material and the silicon material will cause the solar cell 1 to warp during the sintering process, and this phenomenon is more significant under the current trend of thinning the silicon substrate, and even leads to the possibility of fragmentation in the subsequent process sex
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[0044] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, Features and their functions are described in detail below.
[0045] Please refer to image 3 As shown, a photoelectric conversion device 2 according to a preferred embodiment of the present invention includes a photoelectric conversion element 21 , a first electrode 22 and a second electrode 23 . In this embodiment, the photoelectric conversion device 2 is a solar cell.
[0046] The photoelectric conversion element 21 has a first semiconductor layer 211 , a second semiconductor layer 212 and a metal layer 213 .
[0047] The first semiconductor layer 211 and the second semiconductor layer 212 are connected to each other to form a junction, which is used as a separation action region for generating electron / hole pairs from light energy. like image 3 As shown, in this embodiment, the first semic...
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Abstract
The phototranslating component is connected to a first electrode and second electrode; said phototranslating component comprises a first semiconductor layer, a second semiconductor layer and a metal layer. Wherein, the second semiconductor layer is connected to the first semiconductor layer; the metal layer is located at one side of the second semiconductor layer; the metal layer comprises at least first trench and a second trench; the first trench is used for portioning the metal layer area into plural numbers of blocks; the second electrode is located at the second trench.
Description
technical field [0001] The invention relates to a conversion device, in particular to a photoelectric conversion device and a photoelectric conversion element thereof. Background technique [0002] With the gradual shortage of energy resources on the earth, the development of new energy has become one of the focuses of the technology industry and industry, and alternative energy products such as solar cells have become one of the targets of development. A solar cell is a photoelectric conversion device that converts light energy into electrical energy by using the photovoltaic effect, that is, using a p-n junction semiconductor to absorb light energy to generate free electrons and holes. Driven by the built-in electric field, the free electrons move to the n-type semiconductor, and the free holes move to the p-type semiconductor, thereby generating a current, and finally drawing the current through the electrodes to form electrical energy that can be used or stored. [0003...
Claims
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Login to View More IPC IPC(8): H01L31/042H01L31/02
CPCY02E10/50
Inventor 洪传献温志中许国强李慧平
Owner UNITED RENEWABLE ENERGY CO LTD