E.i. Dupont De Nemours and Company

Hideki Akimoto

Takuya Konno

Richard John Sheffield Young

Jerome David Smith

Giovanna Laudisio

Michael Rose

Patricia J Ollivier

Chieko Kikuchi

Michael F Barker

Embodiments of the invention relate to a silicon semiconductor device, and a conductive paste for use in the front side of a solar cell device.

Conductive compositions and processes for use in the manufacture of semiconductor devices&#x2014;organic medium components

A method for manufacturing a solar cell, comprising steps of: a) providing a semiconductor substrate having a light-receiving side and a back side, wherein a passivation layer is formed on the back side; b) forming a silver conductor pattern on the back side of the semiconductor substrate; c) forming an aluminum conductor pattern on the back side of the semiconductor substrate, at least part of the aluminum conductor pattern being superimposed on at least part of the silver conductor pattern; and d) firing the silver conductor pattern and the aluminum conductor pattern at the same time, thereby forming an electric contact between the semiconductor substrate and the aluminum conductor pattern by way of fire through in a region where the silver conductor pattern and the aluminum conductor pattern are superimposed.

Solar cell and manufacturing method of the same

The present invention relates to a method of manufacturing a solar cell electrode, comprising: preparing a semiconductor substrate having a preformed electrode on a front side, a back side, or both of the front and the back side of the semiconductor substrate; applying a conductive paste onto the preformed electrode, wherein the conductive paste comprises a conductive powder, an amorphous saturated polyester resin with glass transitional temperature (Tg) of 50&#xb0; C. or lower, and an organic solvent; drying the applied conductive paste; putting a tab electrode on the dried conductive paste; and soldering the tab electrode.

Method of manufacturing solar cell electrode and conductive paste

This invention relates to an electrode used in a solar cell that exhibits good conductivity at the N layer and P layer and to a conductive paste used for producing such an electrode.

Solar cell electrode

A method for producing a solar cell electrode, comprising the steps of: applying on at least part of a light-receiving surface of a semiconductor substrate a conductive paste comprising conductive component, glass frit, and resin binder, wherein the conductive component comprises alloy particles comprising silver and a metal selected from the group consisting of Pd, Ir, Pt, Ru, Ti, and Co; and firing the conductive paste.

Conductive paste and grid electrode for silicon solar cells

Disclosed is a back contact-type solar cell wherein both of n-type layer and p-type layer are formed in the opposite side from a sunlight receiving side, wherein an electrode formed on the opposite side comprises a conductive component comprising silver and an added metal selected from the group consisting of Mo, Tc, Ru, Rh, Pd, W, Re, Os, Ir and Pt.

Paste for back contact-type solar cell

A method for producing a solar cell electrode, comprising the steps of: applying on at least part of a light-receiving surface of a semiconductor substrate a conductive paste comprising conductive component, glass frit, and resin binder, wherein the conductive component comprises silver particles and core-shell particles in which a metal selected from the group consisting of Pd, Ir, Pt, Ru, Ti, and Co is coated on a surface of silver or copper; and firing the conductive paste.

Disclosed is a method for producing a solar cell electrode, comprising the steps of: (1) applying a paste comprising (a) electrically conductive particles containing silver particle having a particle size of 0.1 to 10 microns and an added particle comprising particles loaded with metal particles selected from the group consisting of Mo, Tc, Ru, Rh, Pd, W, Re, Os, Ir and Pt particles onto the opposite side from the light receiving side of a back contact-type solar cell substrate, wherein content of the silver particle is 40 to 90 wt %, and content of the added particle is 0.01 to 10 wt % based on the weight of the paste; and (2) firing the applied paste.

Disclosed is a method for producing a solar cell electrode, comprising the steps of: (1) applying a paste comprising (a) electrically conductive particles containing silver particle having a particle size of 0.1 to 10 microns and an added particle comprising a metal alloy comprising metal particles selected from the group consisting of Mo, Tc, Ru, Rh, Pd, W, Re, Os, Ir and Pt particles onto the opposite side from the light receiving side of a back contact-type solar cell substrate, wherein content of the silver particle is 40 to 90 wt %, and content of the added particle is 0.01 to 10 wt % based on the weight of the paste; and (2) firing the applied paste.

A p-type electrode on player of solar cell comprising, prior to firing; (a) Electrically conductive particles comprising silver particle having a particle size of 0.1 to 10 microns and added particle composed of silver particle coated with a metal selected from the group consisting of Mo, Tc, Ru, Rh, Pd, W, Re, Os, Ir and Pt, (b) Glass frit, and (c) A resin binder, wherein the electrode is made from a fired conductive paste which is comprised of 40 to 90 wt % of the silver particle and 0.01 to 10 wt % of the added particle based on the weight of the paste.

A p-type electrode on player of solar cell comprising, prior to firing; (a) Electrically conductive particles comprising silver particle having a particle size of 0.1 to 10 microns and added particle composed of a metal particle supported by carbon particles, wherein the metal particle is selected from the group consisting of Mo, Tc, Ru, Rh, Pd, W, Re, Os, Ir and Pt particle, (b) Glass frit, and (c) A resin binder, wherein the electrode is made from a fired conductive paste which is comprised of 40 to 90 wt % of the silver particle and 0.01 to 10 wt % of the added particle based on the weight of the paste.

A p-type electrode on p+ layer of solar cell comprising, prior to firing; (a) Electrically conductive particles comprising silver particle having a particle size of 0.1 to 10 microns and added particle composed of a metal alloy containing a metal selected from the group consisting of Mo, Tc, Ru, Rh, Pd, W, Re, Os, Ir and Pt, (b) Glass frit, and (c) A resin binder, wherein the electrode is made from a fired conductive paste which is comprised of 40 to 90 wt % of the silver particle and 0.01 to 10 wt % of the added particle based on the weight of the paste.

A conductive paste for grid electrodes in solar cells includes a conductive component, glass frit, and resin binder, wherein the conductive component is selected from the group consisting of (i) silver particles and metal particles selected from the group consisting of Pd, Ir, Pt, Ru, Ti, and Co, (ii) alloy particles comprising silver and metal selected from the group consisting of Pd, Ir, Pt, Ru, Ti, and Co, and (iii) silver particles and core-shell particles in which a metal selected from the group consisting of Pd, Ir, Pt, Ru, Ti, and Co is coated on the surface of silver or copper.

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Kanagawa, Japan

Hideki Akimoto