SOLAR CELL WITH GRADED BANDGAP

• Main Authors: CHEN JR-HONG, HUANG CHU-WAN, YEH KUANGN
• Format: Patent
• Language: English
• Published: 03.05.2012
• Subjects: 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

A solar cell with graded bandgap is provided to increase the efficiencies of using the solar energy by a solar cell. The solar cell with graded bandgap above sequentially comprises a transparent conductive layer, a polysilicon layer, and conductive layer on a substrate. The polysilicon layer has a gradually increased bandgap from a first interface contacting the transparent conductive layer to the second interface contacting the conductive layer.