Micro-fractures, also known as micro-cracks, represent a form of solar cell degradation. The silicon used in the solar cells is very thin, and expands and contracts as a result of thermal cycling. Among them, PID effect and hot spots usually appear after installation and operation of PV panels for a period of time. Micro-cracks are a common problem. . A number of years ago, cell microcracks, hot spots, and PID effects used to be three important factors affecting the performance of crystalline silicon PV modules. Also, some climate proceedings such as snow loads, strong winds and hailstor when the first crack (which had reduced dimensions) was formed.
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