E.i. Dupont De Nemours and Company

Raj G Rajendran

Kenneth Warren Hang

Kurt Richard Mikeska

Paul Douglas Vernooy

Carmine C Torardi

Yueli Wang

A conductive paste composition contains a source of an electrically conductive metal, a lead-tellurium-based oxide, a discrete oxide of an adhesion promoting element, and an organic vehicle. An article such as a high-efficiency photovoltaic cell is formed by a process of deposition of the paste composition on a semiconductor substrate (e.g., by screen printing) and firing the paste to remove the organic vehicle and sinter the metal and lead-tellurium-based oxide.

Conductive paste composition and semiconductor devices made therefrom

The present invention is directed to a thick film silver paste comprising (i) silver, (ii) copper, and (iii) a Pb&#x2014;Te&#x2014;O all dispersed in an organic medium. The present invention is further directed to an electrode formed from the paste and a semiconductor device and, in particular, a solar cell comprising such an electrode. The electrodes provide good electrical performance.

Thick film silver paste containing copper and lead&#x2014;tellurium&#x2014;oxide and its use in the manufacture of semiconductor devices

Disclosed are aluminum paste compositions, processes to form solar cells using the aluminum paste compositions, and the solar cells so-produced. The aluminum paste compositions comprise 0.003% to 9%, by weight of boron nitride; 27% to 89%, by weight of an aluminum powder, such that the weight ratio of aluminum powder to boron nitride is in the range of 9:1 to 9909:1; and 0.1% to 9%, by weight of an optional glass frit-free additive, the optional glass frit-free additive comprising amorphous silicon dioxide, crystalline calcium oxide organometallic compounds, metal salts, or mixtures thereof; and 10% to 70%, by weight of an organic vehicle, wherein the amounts in % by weight are based on the total weight of the aluminum paste composition.

Aluminum pastes comprising boron nitride and their use in manufacturing solar cells

The present invention is directed to a thick film silver paste comprising (i) silver, (ii) AlO, and (iii) a Pb&#x2014;Te&#x2014;O all dispersed in an organic medium. The present invention is further directed to an electrode formed from the paste and a semiconductor device and, in particular, a solar cell comprising such an electrode. The electrodes provide good adhesion and good electrical performance.

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Hockessin, DE, United States of America

Raj G Rajendran