Backsheet Of Solar Panel Material

The tedlar polyester tedlar material combination strengthens the material qualities of tedlar and is therefore used as backsheet of solar panels to enhance the longevity of the panels.

Backsheet of solar panel material. A backsheet is a required insulating film in all solar photovoltaic panels. The backsheet is typically a laminate of different polymer materials. It is followed by cell side yellowing and cell side cracking. Its primary purpose is to protect the solar panel components specifically the solar cells and wires from environmental elements such as stress or moisture which can degrade the 20 year life of solar panels.

To insulate and protect the user from shock and provide the most reliable and efficient electrical conductivity possible. Additionally the solar backsheet has dielectric properties to act as an insulator for the power generating modules. Tedlar pvf backsheets maintain low 0 05 defect rates despite being the oldest installations dating back 35 years. Air side cracking on the bottom left occurs on the rear of solar panels and is the most common defect.

To date dupont has surveyed over 4 2 million panels from 275 solar fields and 79 module manufacturers accounting for over 1 04 gw. The pv backsheet material you choose for your solar panel will have a considerable impact on how it withstands the elements and performs over the course of its lifetime. Pvdf and polyamide backsheet defects increased by 51 and 18 since last year. Types of solar panel backsheet defects.

A key sourcing item for solar panel manufacturers. More than half the world s 900 million solar panels have dupont materials in them and dupont materials have been time tested in more than 11 trillion panel hours of outdoor solar field installations globally since 1975. 84 backsheet manufacturers are listed below. A complete list of solar material companies involved in backsheet production for the crystalline panel process.

Tpt is one of the mostly applied polymer multi laminates for solar panels as there are only very few materials with comparably material qualities. Tedlar is the brand name of the american chemical company dupont and refers to polyvinyl fluoride pvf a thermoplastic fluoropolymer material. A reliable backsheet should be able to provide protection from moisture physical damage and uv rays while also minimizing the occurrence of electrical discharge and thermal. Tpt is the acronym of tedlar film pet tedlar film.

The panel s backsheet serves the same function that wire insulation serves in household wiring. The illustrations from the report below show the 5 different categories of backsheet defects and their frequency. Most solar panel manufacturers use tpt for a solar backsheet. For solar pv module backsheets.

Tpt and solar panels.