Revolutionary atmospheric-pressure plasma boosts adhesion of polymer films for roll-to-roll solar-cell production
Wednesday, March 27, 2013 - 07:00
in Physics & Chemistry
Mass manufacture of photovoltaic materials is often achieved inexpensively by screen printing organic solar cells onto plastic sheets. The polymer known as poly(ethylene terephthalate), or PET, is a key part of the technology. Well known as the inexpensive plastic used to make soda bottles, PET has garnered increasing use as an optoelectronic substrate because of its strength and flexibility. But printing conductive solar-cell coatings onto PET is a challenge: it has a non-reactive surface and is frequently contaminated with static electric charges, which makes adhesion to other materials difficult.