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Title:
 
Band-Gap-Engineered Architectures for High-Efficiency Multijunction Concentrator Solar Cells
 
Author(s):
 
R.R. King, A. Boca, W. Hong, X.-Q. Liu, D. Bhusari, D. Larrabee, K.M. Edmondson, D.C. Law, C.M. Fetzer, S. Mesropian, N.H. Karam
 
Keywords:
 
III-V Semiconductor, Gallium Arsenide Based Cells, Multijunction Solar Cell, High Efficiency, Concentrator Cell/s
 
Topic:
 
Advanced Photovoltaics
Subtopic: Fundamental Studies
Event: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany
Session: 1AO.5.2
 
Pages:
 
55 - 61
ISBN: 3-936338-25-6
Paper DOI: 10.4229/24thEUPVSEC2009-1AO.5.2
 
Price:
 
 
0,00 EUR
 
Document(s): paper
 

Abstract/Summary:


Beginning with maximum theoretical efficiencies from detailed balance calculations, we evaluate the real-world energy loss mechanisms in a variety of high-efficiency multijunction cell architectures such as inverted metamorphic 3- and 4-junction cells, as a step toward closing the gap between theory and experiment. Experimental results are given on band-gap-engineered lattice-matched and metamorphic 3-junction cells, and on 4-junction terrestrial concentrator cells. A new world record 41.6%-efficient solar cell is presented, the highest efficiency yet demonstrated for any type of solar cell.