BACK JUNCTION SOLAR CELL WITH SELECTIVE FRONT SURFACE FIELD

SOLAR CELLS (5) AND METHODS FOR THEIR MANUFACTURE ARE DISCLOSED. AN EXAMPLE METHOD MAY INCLUDE FABRICATING AN N-TYPE SILICON SUBSTRATE (10) AND INTRODUCING N-TYPE DOPANT TO ONE OR MORE FIRST AND SECOND REGIONS OF THE SUBSTRATE SO THAT THE SECOND REGION (15) IS MORE HEAVILY DOPED THAN THE FIRST REGIO...

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Bibliographische Detailangaben
Hauptverfasser:	CHANDRASEKARAN, VINODH, YELUNDUR, VIJAY, ROHATGI, AJEET, DAMIANI, BEN, MEIER, DANIEL, DAVIS, HUBERT PRESTON
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION SEMICONDUCTOR DEVICES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	SOLAR CELLS (5) AND METHODS FOR THEIR MANUFACTURE ARE DISCLOSED. AN EXAMPLE METHOD MAY INCLUDE FABRICATING AN N-TYPE SILICON SUBSTRATE (10) AND INTRODUCING N-TYPE DOPANT TO ONE OR MORE FIRST AND SECOND REGIONS OF THE SUBSTRATE SO THAT THE SECOND REGION (15) IS MORE HEAVILY DOPED THAN THE FIRST REGION (20). THE SUBSTRATE MAY BE SUBJECTED TO A SINGLE HIGH-TEMPERATURE ANNEAL CYCLE TO FORM A SELECTIVE FRONT SURFACE FIELD LAYER. OXYGEN MAY BE INTRODUCED DURING THE SINGLE ANNEAL CYCLE TO FORM IN SITU FRONT AND BACK PASSIVATING OXIDE LAYERS (40, 41). FIRE-THROUGH OF FRONT AND BACK CONTACTS AS WELL AS METALLIZATION WITH CONTACT CONNECTIONS MAY BE PERFORMED IN A SINGLE CO- FIRING OPERATION. THE FIRING OF THE BACK CONTACT MAY FORM A P+ EMITTER LAYER (50) AT THE INTERFACE OF THE SUBSTRATE AND BACK CONTACTS, THUS FORMING A P-N JUNCTION (25) AT THE INTERFACE OF THE EMITTER LAYER AND THE SUBSTRATE. ASSOCIATED SOLAR CELLS ARE ALSO PROVIDED.