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Solar cell and manufacturing method thereof

A solar cell and electrode technology, applied in the direction of final product manufacturing, sustainable manufacturing/processing, circuits, etc., can solve problems affecting solar cell efficiency, solar cell efficiency degradation, element ratio changes, etc.

Inactive Publication Date: 2015-05-06
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, when forming a compound semiconductor, the ratio of each element in the photoactive layer and on the surface of the photoactive layer changes greatly due to the difference in reactivity between the elements.
[0007] In this case, the resulting photoactive layer is formed as a thin film having largely different constituent elements based on their positions, and thus degrades the efficiency of the solar cell
[0008] In addition, when soda lime glass is used as a substrate, sodium (Na) included in the substrate diffuses into the photoactive layer, thereby affecting the efficiency of the solar cell

Method used

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  • Solar cell and manufacturing method thereof
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  • Solar cell and manufacturing method thereof

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Embodiment Construction

[0042] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.

[0043] As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

[0044] In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity.

[0045] Like reference numerals refer to like elements throughout the specification.

[0046] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

[0047] In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.

[0048] Additionally, the use of "may" when describing an emb...

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Abstract

A solar cell according to embodiments of the present invention includes: a substrate; a first electrode formed on the substrate; a photoactive layer formed on the first electrode and including group I and III elements; and a second electrode formed on the photoactive layer. The first electrode includes first and second parts respectively having different resistivity, and group I to group III element composition ratios of the photoactive layer respectively corresponding to the first and second parts are different from each other.

Description

technical field [0001] Aspects of embodiments of the described technology relate to a solar cell including a CIS / CIGS based semiconductor and a method of manufacturing the same. Background technique [0002] A solar cell, which is a photoelectric conversion element that converts solar energy into electrical energy, has recently attracted attention as a substantially unlimited, non-polluting next-generation energy source. [0003] Solar cells generally include p-type semiconductors and n-type semiconductors, and can be used as an external electrical energy source, which absorbs sunlight energy into a photoactive layer to generate electron-hole pairs (EHP) in the semiconductor, so that the generated electrons and The holes move to the n-type semiconductor and the p-type semiconductor respectively to be collected in the electrodes. [0004] Compound semiconductors including group I-III-VI elements can be used as the photoactive layer. [0005] Compound semiconductors can have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/04H01L31/18
CPCH01L31/022425H01L31/0322H01L31/0749H01L31/18Y02E10/541Y02P70/50H01L31/04
Inventor 郑胜在
Owner SAMSUNG SDI CO LTD