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Heterojunction solar cell and preparation method thereof

A technology of solar cells and heterojunctions, applied in the field of solar cells

Inactive Publication Date: 2017-02-15
SUZHOU GCLSI SCI & TECH IND APPL RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a new type of heterojunction solar cell instead of the silver grid wire for the problems caused by the silver grid wire electrode in the existing heterojunction solar cell

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  • Heterojunction solar cell and preparation method thereof

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0025] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

[0026] Unless otherwise defined, all technical and scientific terms u...

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Abstract

The present invention relates to the solar cell field, and concretely discloses a heterojunction solar cell. The solar cell comprises a crystal wafer; a first intrinsic layer, a first doping amorphous silicon layer, a first transparent conducting layer and a front grid line electrode which are located at one side of the crystal wafer in order; and a back electrode located at the other side of the crystal wafer, wherein the front grid line electrode is a copper nanowire electrode. The heterojunction solar cell solves the problems about the sliver grid line electrode because the sliver grid line electrode is not employed. Besides, the copper nanowire electrode is helpful for reducing the cost and satisfying the conductivity requirement. The copper nanowire electrode has a certain transmission of light to enhance the quantity of illumination into the silicon. The copper nanowire electrode basically has no the problem of the grid line widening so as to reduce the grid shielding area and further enhance the quantity of illumination into the silicon layer. The flexibility of the copper nanowire electrode is good to facilitate the flexibility development of the heterojunction solar cell. The present invention further discloses the preparation method of the heterojunction solar cell.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a heterojunction solar cell and a preparation method thereof. Background technique [0002] Heterojunction solar cells (HIT cells) are constructed by adding an intrinsic layer between a layer of doped amorphous silicon and a crystalline silicon substrate. Heterojunction solar cells not only have the high efficiency and high stability of crystalline silicon solar cells, but also have high output at high temperatures due to low energy consumption, relatively simple process, and better temperature characteristics. In recent years, it has attracted much attention and has become one of the main development directions of solar cells. [0003] In heterojunction solar cells, the front electrodes are generally screen-printed silver grid electrodes. In recent years, the global price of silver has increased year by year, and the price of conductive silver paste used in heterojunction solar cells...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0747H01L31/0224H01L31/18
CPCH01L31/022425H01L31/0747H01L31/1804Y02E10/547Y02P70/50
Inventor 闫丽张闻斌王琪顾凯陆军威
Owner SUZHOU GCLSI SCI & TECH IND APPL RES INST CO LTD
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