Four-junction wafer bonded concentrator solar cells

  title={Four-junction wafer bonded concentrator solar cells},
  author={Frank Dimroth and Thomas N. D. Tibbits and Markus Niemeyer and Felix Predan and Paul Beutel and Christian Ing. habil. Karcher and Eduard Oliva and Gerald Siefer and David Lackner and Peter Fuss-Kailuweit and Andreas W. Bett and Rainer Klaus Krause and Charlotte Drazek and Eric Guiot and Jocelyne Wasselin and Aur{\'e}lie Tauzin and Thomas Signamarcheix},
  journal={2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC)},
Summary form only given. The highest solar cell conversion efficiencies are achieved with Four-junction devices under concentrated sunlight illumination. Different cell architectures are under development, all targeting an ideal bandgap combination close to 1.9 eV, 1.4 eV, 1.0 eV and 0.7 eV. Wafer bonding is used in this work to combine materials with a significant lattice-mismatch. Three cell architectures are presented using the same two top junctions of GaInP/GaAs but different infrared… 
151 Citations
InP-based composite substrates for four junction concentrator solar cells
A photovoltaics conversion efficiency of 46% at 508 suns concentration was recently demonstrated with a four-junction solar cell consisting in a GaAs-based top tandem cell transferred onto an
Single and multi-junction solar cells utilizing a 1.0 eV SiGeSn junction
Multi-junction photovoltaic technologies lead the way to achieving ultra-high power conversion efficiencies for both space based and terrestrial concentrator applications. However, realizing a
High-Efficiency GaAs-Based Solar Cells
The III-V compound solar cells represented by GaAs solar cells have contributed as space and concentrator solar cells and are important as sub-cells for multijunction solar cells. This chapter
GaInP/AlGaAs metal‐wrap‐through tandem concentrator solar cells
III–V multi-junction solar cells are promising devices for photovoltaic applications under very high concentration levels of sunlight. Shadowing losses of the front side metallisation and ohmic
Passivating contacts and tandem concepts: Approaches for the highest silicon-based solar cell efficiencies
The efficiency of photovoltaic energy conversion is a decisive factor for low-cost electricity from renewable energies. In recent years, the efficiency of crystalline silicon solar cells in mass
The GaAs/GaAs/Si solar cell – Towards current matching in an integrated two terminal tandem
Abstract Non-concentrating tandem solar cells offer the potential to increase conversion efficiencies beyond 30%. Of particular interest are configurations with a silicon bottom cell – to leverage
Single-junction solar cells based on p-i-n GaAsSbN heterostructures grown by liquid phase epitaxy
Abstract In this paper, we present single heterojunction p-i-n GaAsSbN/GaAs solar cells grown by low-temperature liquid-phase epitaxy (LPE) – this is of interest as a component of multi-junction
Multi-junction solar cells paving the way for super high-efficiency
In order to realize a clean energy society by using renewable energies, high-performance solar cells are a very attractive proposition. The development of high-performance solar cells offers a
Six-junction III–V solar cells with 47.1% conversion efficiency under 143 Suns concentration
Single-junction flat-plate terrestrial solar cells are fundamentally limited to about 30% solar-to-electricity conversion efficiency, but multiple junctions and concentrated light make much higher
Recent progress of multi-junction solar cell development for CPV applications at AZUR SPACE
The next generation concentrator photovoltaic (CPV) solar cell from AZUR SPACE will be a five-junction upright metamorphic (5J-UMM) cell that is currently under development. The main design criteria


Development of high efficiency wafer bonded 4-junction solar cells for concentrator photovoltaic applications
The next generation of multi-junction concentrator solar cells will have to reach higher efficiencies than today's devices. At the same time these solar cells must be reliable in the field, be
New Efficiency Frontiers with Wafer-Bonded Multi-Junction Solar Cells.
Triple-junction (3J) solar cells will soon be history. The next generation of multi-junction (MJ) devices are now reaching efficiencies far beyond the record levels of 3J cells on Germanium. In this
Wafer bonded 4-junction GaInP/GaAs//GaInAsP/GaInAs concentrator solar cells
Multiple-junction solar cells made from III-V compound semiconductors are delivering the highest solar-electric conversion efficiencies. Increasing the number of junctions offers the potential to
Wafer bonded four-junction GaInP/GaAs//GaInAsP/GaInAs concentrator solar cells with 44.7% efficiency
Triple-junction solar cells from III–V compound semiconductors have thus far delivered the highest solar-electric conversion efficiencies. Increasing the number of junctions generally offers the
Development of InGaP/GaAs/InGaAs inverted triple junction concentrator solar cells
We have been developing InGaP/GaAs/InGaAs inverted triple junction solar cells for a concentrator application with a target efficiency of 45%. We reduced the series resistance in the cells. As a
III-V Multi-junction solar cells and concentrating photovoltaic (CPV) systems
Abstract It has been proven that the only realistic path to practical ultra-high efficiency solar cells is the monolithic multi-junction approach, i.e., to stack pn-junctions made of different
Practical considerations in tandem cell modeling
Abstract Computer modeling of two-junction, tandem solar cells is performed with an emphasis on exploring the sensitivity of cell design and performance to important, practical parameters such as
Advanced high-efficiency concentrator tandem solar cells
Computer modeling studies of two-junction concentrator tandem solar cells show that infrared (IR)-responsive bottom cells are essential to achieve the highest performance levels in both terrestrial
Solar cell generations over 40% efficiency
Multijunction III-V concentrator cells of several different types have demonstrated solar conversion efficiency over 40% since 2006, and represent the only third-generation photovoltaic technology to
III‐V Multijunction Solar Cells—New Lattice‐Matched Products And Development Of Upright Metamorphic 3J Cells
AZUR SPACE's current CPV product 3C40C is an advanced lattice‐matched In0.50Ga0.50P/In0.01Ga0.99As/Ge triple junction (3J) solar cell. Recently, efficiencies up to 41.2% (450–600×AM1.5d) have been