top of page

BERT THIN FILMS

Plug and Play Copper Pastes

Home: Welcome

ABOUT OUR TECHNOLOGY

Revolutionizing the Solar Industry

The team at Bert Thin Films believes that solar energy should be affordable for everyone.

Challenge

A solar cell includes a metal pattern to collect and conduct the electricity generated from the silicon. This metal is silver, which is expensive and in high demand. 

The silver is printed using simple screen printing processes and fired in high speed belt furnaces, processes that have been implemented for decades.

Others have attempted to replace the silver conductor with copper, which is far more abundant and less expensive, but their solutions have required introducing additional steps to the manufacturing processes and thus added expenses that offset the benefits of their copper paste. 

Bert Thin Film's Solution

The team at Bert Thin Films has invented and patented a unique copper paste, CuBert™, which is used as a direct substitute for the silver paste in the manufacturing process.

CuBert™ is printed and fired in the same manner as the silver paste; using the same screen-printing equipment and belt furnaces in use today by solar panel manufacturers.

CuBert™ is a direct plug-and-play replacement for the silver paste in the existing manufacturing process, so the cost benefits of the copper conductor can be fully and immediately realized by the manufacturers. And there is plenty to supply the expected industry growth.

Home: Technology
Powder_Rev.jpg

COPPER

FORMULATING

DSC03554.JPG

COPPER PASTE

Far cheaper than silver

Same methods as silver pastes

Simple plug and play

Filling paste jar

Front Side Copper Metallization Paste

  • Screen printable using industry standard screens and printers

  • Fired in air using industry standard belt furnaces 

  • Does not require an inert atmosphere

  • Demonstrated on several architectures

  • Can be formulated for specific design

CuBert™ is a lower cost paste requiring no process changes

Group Rev.jpg

BERT THIN FILMS TEAM

Home: Team
Thad2_edited_edited.jpg

THAD DRUFFEL, PHD, PE

Founder & CEO

Rav_edited.jpg

RUVINI DHARMADASA, PHD

Founder & CTO

NEWS

Bottle.JPG
viscometer.JPG
Modern Digital Watch

SILICON WORKSHOP

2023 July

Bert Thin Films, LLC presented results of their copper-based pastes at the 30th Silicon Workshop in Breckenridge, CO: “Screen print metallization using Cu-based pastes”. The workshop promotes an exchange of technical and scientific information between international researchers.

METALLIZATION WORKSHOP

2023 May

Bert Thin Films, LLC presented results of their copper-based pastes at the Metallization Workshop in Neuchatel, Switzerland.  

Data from the past year was presented that demonstrates the applicability of the BTF copper-based paste as well as demonstrating durability.

DURAMAT
FUNDING

2023 April

BTF has been awarded a $500K grant from the DuraMAT Consortium. The project solidifies the team with expertise from the National Lab and University researchers to develop accelerated aging tests that explore the impact of diffusion, oxidation, and encapsulant degradation mechanisms.

NEWS ARCHIVES

2024 - 2014

Bert Thin Films, LLC was formed by Dr. Ruvini Dharmadasa and Dr. Thad Druffel to commercialize a copper paste for the solar energy industry that replaces silver paste.

 

To access more news stories related to Bert Thin Films, LLC click Archives below.

Home: News
action.png

CONTACT US

625 Myrtle St.
Louisville, KY 40208

502-738-7001

Home: Contact
bottom of page