Sunscreen for solar cells

Laboratory testing has revealed that some negatively-doped, “n-type” tunnel oxide passivated contact (TOPCon) and heterojunction (HJT) solar modules are susceptible to ultraviolet (UV) light-related damage and degradation. That could mean trouble down the line, if modules in the field begin to show UV-related performance loss. Manufacturers are implementing solutions at cell and module level.

By

Mark Hutchins

04 Oct 2024

HJT module maker Huasun has integrated an encapsulant material that converts UV photons to visible light into its modules, mitigating UV degradation without blocking light from the cell and reducing its performance. | Photo: Huasun

Results from PV testing laboratories in 2024 have raised concern over ultraviolet-induced degradation (UVID) in some n-type TOPCon and HJT panels. The “PV Module Index Report” from the Renewable Energy Test Center (RETC) noted 40% of tested modules exhibited at least 5% performance loss after UV testing.The Kiwa PVEL lab, also in California, carried out …

This article is part of pv+

Subscribe digitally to unlock exclusive investigative reporting, expert insights, in-depth analysis, and premium background coverage. Your subscription also includes full access to the digital edition of our magazine.