Preliminary Amendment
`
`1-20
`
`(canceled)
`
`AMENDMENTSTO THE CLAIMS
`
`21.
`
`(New) A solar cell, the solar cell comprising:
`
`a N-type silicon substrate having a front surface and a back surface, wherein the
`
`front surface comprises a textured surface;
`
`an antireflective layer over the front surface of the N-type silicon substrate;
`
`a doped region in the front surface of the N-type silicon substrate;
`
`an oxide region disposed on the back surface of the N-type silicon substrate;
`
`a polysilicon emitter disposed on the oxide region;
`
`a first metal contact disposed on the front surface of the N-type silicon substrate,
`
`wherein the first metal contactis in electrical contact with the doped region; and
`
`a second metal contact disposed on the polysilicon emitter.
`
`22.
`
`(New) Thesolar cell of claim 21, wherein the antireflective layer comprises a
`
`layer ofsilicon nitride.
`
`23.
`
`(New) Thesolar cell of claim 21, wherein the polysilicon emitter comprises a P-
`
`type doped polysilicon.
`
`24.
`
`(New)Thesolar cell of claim 21, further comprising a dielectric layer over the
`
`polysilicon emitter.
`
`25.
`
`(New) Thesolar cell of claim 24, wherein the dielectric layer comprisessilicon
`
`dioxide.
`
`26.
`
`(New) Thesolar cell of claim 24, further comprising a trench cutting through the
`
`dielectric layer and the polysilicon emitter and into a portion of the N-type silicon
`
`substrate on the backside ofthe solarcell.
`
`

`

`Preliminary Amendment
`
`27.
`
`(New) Thesolar cell of claim 21, wherein the second metal contact comprises a
`
`metal forming an infrared reflecting layer with a dielectric layer.
`
`28.
`
`(New) Thesolar cell of claim 21, wherein the second metal contact comprises a
`
`metal formed in a plurality of contact holes to the polysilicon emitter.
`
`29.
`
`(New) Thesolar cell of claim 21, wherein the first and second metal contacts
`
`comprise a metal selected from the group consisting ofsilver or aluminum.
`
`30.
`
`(New) A solar cell, the solar cell comprising:
`
`a substrate having a front surface and a back surface, wherein the front surface
`
`comprises a textured surface;
`
`an antireflective layer over the front surface of the substrate;
`
`a doped region in the front surface of the substrate;
`
`an oxide region disposed on the back surface ofthe substrate;
`
`a polysilicon emitter disposed on the oxide region;
`
`a first bus bar disposed on the front surface of the substrate;
`
`a first metal contact disposed on the front surface of the substrate, wherein the
`
`first metal contactis in electrical contact with, and perpendicularto, the first bus bar; and
`
`a second metal contact disposed on the polysilicon emitter.
`
`31.
`
`(New) Thesolarcell of claim 30, further comprising a second bus bar disposed on
`
`the front surface of the substrate, wherein the second busbaris parallel to the first bus bar.
`
`32.
`
`(New) Thesolar cell of claim 31, wherein the first metal contact is in electrical
`
`contact with, and perpendicularto, the first bus bar and the second busbar.
`
`33.
`
`(New) The solar cell of claim 31, further comprising a third bus bar disposed on
`
`the back surface of the substrate.
`
`

`

`Preliminary Amendment
`
`34.
`
`(New) Thesolarcell of claim 33, further comprising a fourth bus bar disposed on
`
`the back surface of the substrate, wherein the fourth busbaris parallel to the third busbar.
`
`35.
`
`(New) Thesolar cell of claim 31, wherein the polysilicon emitter comprises a P-
`
`type dopedpolysilicon.
`
`36.
`
`(New) A solar cell array, the solar cell array comprising:
`
`a first solar cell, the first solar cell comprising:
`
`a substrate having a front surface and a back surface, wherein the front surface
`
`comprises a textured surface;
`
`an antireflective layer over the front surface of the substrate;
`
`a doped regionin the front surface of the substrate;
`
`an oxide region disposed on the back surface ofthe substrate;
`a polysilicon emitter disposed on the oxide region;
`a first bus bar disposed on the front surface of the substrate, wherein the first bus
`
`bar is electrically connected to a corresponding busbar of anothersolar cell;
`
`a first metal contact disposed on the front surface of the N-typesilicon substrate,
`
`wherein the first metal contactis in electrical contact with, and perpendicularto, the first
`
`busbar; and
`
`a second metal contact , disposed on the polysilicon emitter.
`
`37.
`
`(New) Thesolar cell array of claim 36, further comprising a second bus bar
`
`disposed on the front surface of the first solar cell, wherein the second busbaris parallel
`
`to the first bus bar.
`
`38.
`
`(New) Thesolar cell of claim 37, wherein the first metal contactis in electrical
`
`contact with and perpendicular to the first bus bar and the second busbarofthefirst solar
`
`cell.
`
`

`

`Preliminary Amendment
`
`39.
`
`(New) Thesolar cell of claim 37, further comprising a third bus bar disposed on
`
`the back surface of the first solar cell, wherein the third busbaris electrically connected
`
`to a corresponding bus bar of another solar cell.
`
`40.
`
`(New) The solar cell of claim 39, further comprising a fourth bus bar disposed on
`
`the back surface of the first solar cell, wherein the fourth busbar is parallel to the third
`
`bus bar.
`
`

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