Theoretical optimization of GaInP/GaAs dual-junction solar cell: Toward a 36% efficiency at 1000 suns

✍ Scribed by Baudrit, Mathieu ;Algora, Carlos

• Book ID: 105365501
• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 302 KB
• Volume: 207
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200925210

✦ Synopsis

Abstract

A theoretical conversion efficiency of 36.4% at 1000 suns concentration has been determined by means of realistic models and an improved optimization routine. The starting point device was the recent world‐record monolithic GaInP/GaAs dual‐junction solar cell that was grown lattice matched on a GaAs substrate by MOVPE, which has an efficiency of 32.6% at 1000 suns. Using previously calibrated models developed at our institution, IES‐UPM, together with Silvaco ATLAS TCAD software, we reproduced the characteristics of the world‐record solar cell, and then determined a cell configuration that would yield greater efficiency by using an optimization routine to hone the doping concentration and the thickness of each layer.