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Monolithic integration of bypass diodes with a thin film solar module

A technology for bypassing diodes and solar modules, which is applied in the direction of diodes, circuits, energy conversion devices, etc., and can solve the problems of increasing the cost of solar modules

Inactive Publication Date: 2011-11-09
DU PONT APOLLO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, externally connected bypass diodes add an undesirable cost to the solar module

Method used

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  • Monolithic integration of bypass diodes with a thin film solar module
  • Monolithic integration of bypass diodes with a thin film solar module
  • Monolithic integration of bypass diodes with a thin film solar module

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Embodiment Construction

[0015] The object of the present invention is to use unused (non-functional) p-n junctions in solar cells of solar modules as bypass diodes. Such as image 3 As shown in, in order to achieve the purpose of the present invention, an electrical connection between the n-doped region under the n-contact in the semiconductor layer 31 and the p-doped region under the p-contact in the semiconductor layer 31 is required to connect it It is represented as a line connecting from the second conductive layer 41 to the first conductive layer 21. Through the connection, figure 2 The configuration shown in where the solar cell string and the bypass diode 34 are connected in an anti-parallel configuration so that the bypass diode 34 is reverse biased when the solar cell is illuminated.

[0016] In order to achieve the purpose of the present invention, a preferred embodiment of a solar module with a bypass diode integrated therein is provided by performing the following manufacturing process.

[0...

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Abstract

A solar module with a bypass diode integrated therein, fabricated on the basis of the standard thin film solar module. By connecting a series of p-n junction to a non-functional p-n junction in anti-parallel, the non-functional p-n junction in the standard thin film solar module is used as the bypass diode. Hence no additional bypass diode is needed in the design.

Description

Technical field [0001] The present invention generally relates to thin film solar modules, and more specifically, to thin film solar modules with bypass diodes integrated therein. Background technique [0002] Solar modules generally consist of many solar cells. Solar cells are typically modeled as diodes that respond to lighting by becoming forward biased and establishing a voltage on the battery. In order to supply greater power, solar cells are usually connected in series. [0003] Figure 1 shows a conventional thin film solar module with solar cell strings. The solar module 70' includes a substrate 10, a first conductive layer 21, a semiconductor layer 31, a second conductive layer 41, and two contacts 51 and 52, wherein the first conductive layer 21 and the second conductive layer 41 respectively serve as the current part. Electrodes and rear electrodes. The solar cell in the solar module 70 ′ includes a semiconductor layer 31, a first conductive layer 21 and a second cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/142H01L31/18
CPCH01L27/1421Y02E10/50H01L27/1423H01L31/042H01L31/046
Inventor 王秋富江获先
Owner DU PONT APOLLO