Title: Solar cell with doped groove regions separated by ridges

Abstract

Solar cells with doped groove regions separated by ridges and methods of fabricating solar cells are described. In an example, a solar cell includes a substrate having a surface with a plurality of grooves and ridges. A first doped region of a first conductivity type is disposed in a first of the grooves. A second doped region of a second conductivity type, opposite the first conductivity type, is disposed in a second of the grooves. The first and second grooves are separated by one of the ridges.

Inventors:

Molesa, Steven Edward; Pass, Thomas; Kraft, Steve

Issue Date:

2017-01-31

Research Org.:

SunPower Corporation, San Jose, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1341835

Patent Number(s):

9559228

Application Number:

13/250,988

Assignee:

SunPower Corporation (San Jose, CA)

Patent Classifications (CPCs):

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

H01L31/022441 - {Electrode arrangements specially adapted for back-contact solar cells}
H01L31/02363 - {of the semiconductor body itself, e.g. textured active layers}
H01L31/0352 - characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
H01L31/0682 - {back-junction, i.e. rearside emitter, solar cells, e.g. interdigitated base-emitter regions back-junction cells}
H01L31/1804 - {comprising only elements of Group IV of the Periodic System}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E10/50 - Photovoltaic [PV] energy
Y02E10/547 - Monocrystalline silicon PV cells

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P70/50 - Manufacturing or production processes characterised by the final manufactured product

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DOE Contract Number:  

FC36-07GO17043

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 Sep 30

Country of Publication:

United States

Language:

English

Subject:

14 SOLAR ENERGY; 42 ENGINEERING