InGaP-based quantum well solar cells: Growth, structural design, and photovoltaic properties
Journal Article
·
· Journal of Applied Physics
- North Carolina State Univ., Raleigh, NC (United States); North Carolina State Univ., Raleigh, NC (United States)
- North Carolina State Univ., Raleigh, NC (United States)
Raising the efficiency ceiling of multi-junction solar cells (MJSCs) through the use of more optimal band gap configurations of next-generation MJSC is crucial for concentrator and space systems. Towards this goal, we propose two strain balanced multiple quantum well (SBMQW) structures to tune the bandgap of InGaP-based solar cells. These structures are based on InxGa1–xAs1–zPz/InyGa1–yP (x > y) and InxGa1–xP/InyGa1–yP (x > y) well/barrier combinations, lattice matched to GaAs in a p-i-n solar cell device. The bandgap of InxGa1–xAs1–zPz/InyGa1–yP can be tuned from 1.82 to 1.65 eV by adjusting the well composition and thickness, which promotes its use as an efficient subcell for next generation five and six junction photovoltaic devices. The thicknesses of wells and barriers are adjusted using a zero net stress balance model to prevent the formation of defects. Thin layers of InGaAsP wells have been grown thermodynamically stable with compositions within the miscibility gap for the bulk alloy. The growth conditions of the two SBMQWs and the individual layers are reported. The structures are characterized and analyzed by optical microscopy, X-ray diffraction, photoluminescence, current-voltage characteristics, and spectral response (external quantum efficiency). In conclusion, the effect of the well number on the excitonic absorption of InGaAsP/InGaP SBMQWs is discussed and analyzed.
- Research Organization:
- North Carolina State Univ., Raleigh, NC (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- EE0005403
- OSTI ID:
- 1470319
- Alternate ID(s):
- OSTI ID: 1240310
OSTI ID: 22597033
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 9 Vol. 119; ISSN JAPIAU; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Using Spin-Coated Silver Nanoparticles/Zinc Oxide Thin Films to Improve the Efficiency of GaInP/(In)GaAs/Ge Solar Cells
|
journal | June 2018 |
Similar Records
InGaP-based quantum well solar cells: Growth, structural design, and photovoltaic properties
Absorption Enhancement in InGaAsP/InGaP Quantum Well Solar Cells
100-period InGaAsP/InGaP superlattice solar cell with sub-bandgap quantum efficiency approaching 80%
Journal Article
·
Sun Mar 06 23:00:00 EST 2016
· Journal of Applied Physics
·
OSTI ID:22597033
Absorption Enhancement in InGaAsP/InGaP Quantum Well Solar Cells
Conference
·
Sun Nov 04 23:00:00 EST 2018
·
OSTI ID:1558344
100-period InGaAsP/InGaP superlattice solar cell with sub-bandgap quantum efficiency approaching 80%
Journal Article
·
Thu Aug 24 20:00:00 EDT 2017
· Applied Physics Letters
·
OSTI ID:1393377