Optitune Oy

Jianhui Wang

Ari Kärkkäinen

Milja Hannu-Kuure

Jarkko Leivo

Admir Hadzic

Henna Järvitalo

Paul Williams

A method of passivating a silicon substrate for use in a photovoltaic device, comprising providing a silicon substrate having a bulk and exhibiting a front surface and a rear surface, and forming by liquid phase application a dielectric layer on at least said rear surface. The dielectric layer formed at the rear surface is capable of acting as a reflector to enhance reflection of light into the bulk of the silicon substrate, and the dielectric layer is capable of releasing hydrogen into the bulk as well as onto a surface of the silicon substrate in order to provide hydrogenation and passivation. The present invention provides an inexpensive, low cost method of improving the electrical and/or optical performance of photovoltaic devices through the application of coating chemicals onto the backside of the silicon substrate.

Growing community of inventors

Singapore, Singapore

Jianhui Wang