Development of Novel Solar Cell Micro Crack Detection Technique

Research output: Contribution to journalArticle

Abstract

This paper presents the development of a solar cell inspection manufacturing execution system (MES). The main objective of the MES is to detect micro cracks in the manufacturing process of solar cells. Hence, to accept or reject a solar cell during the assembling unit. The proposed MES consists of three stages, at first stage, the inspection system will be placed on the manufacturing process of the solar cell. After the solar cell has been manufactured, it will pass under an in-line electroluminescent (EL) system. At this stage, an OR operation between a healthy/no-crack and the inspected solar cell image will be obtained. This OR operation will generate a better calibration for the cracks in the photovoltaic solar cell image. The final calibrated image presents a high quality, and low noise structure, thus easier to identify the micro cracks size, location, and orientation. The last stage evaluates the calibrated image using the plot profile which is well known as the distance in pixels versus the gray level of the image. The plot profile will indicate whether to accept or reject the solar cell, 10% confidence interval for the gray level was used to identify the upper and lower detection limits.

LanguageEnglish
Pages277 -285
Number of pages9
JournalIEEE Transactions on Semiconductor Manufacturing
Volume32
Issue number3
Early online date10 Jun 2019
DOIs
Publication statusPublished - 2 Aug 2019

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Crack detection
Solar cells
cracks
solar cells
manufacturing
Cracks
inspection
plots
Inspection
profiles
assembling
low noise
confidence
Pixels
pixels
Calibration
intervals

Cite this

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title = "Development of Novel Solar Cell Micro Crack Detection Technique",
abstract = "This paper presents the development of a solar cell inspection manufacturing execution system (MES). The main objective of the MES is to detect micro cracks in the manufacturing process of solar cells. Hence, to accept or reject a solar cell during the assembling unit. The proposed MES consists of three stages, at first stage, the inspection system will be placed on the manufacturing process of the solar cell. After the solar cell has been manufactured, it will pass under an in-line electroluminescent (EL) system. At this stage, an OR operation between a healthy/no-crack and the inspected solar cell image will be obtained. This OR operation will generate a better calibration for the cracks in the photovoltaic solar cell image. The final calibrated image presents a high quality, and low noise structure, thus easier to identify the micro cracks size, location, and orientation. The last stage evaluates the calibrated image using the plot profile which is well known as the distance in pixels versus the gray level of the image. The plot profile will indicate whether to accept or reject the solar cell, 10{\%} confidence interval for the gray level was used to identify the upper and lower detection limits.",
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Development of Novel Solar Cell Micro Crack Detection Technique. / Dhimish, Mahmoud; Mather, Peter.

In: IEEE Transactions on Semiconductor Manufacturing, Vol. 32, No. 3, 02.08.2019, p. 277 -285.

Research output: Contribution to journalArticle

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