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Progress towards a 30% efficient GaInP/Si tandem solar cells

Journal Article · · Energy Procedia (Online)
The performance of dual-junction solar cells with a Si bottom cell has been investigated both theoretically and experimentally. Simulations show that adding a top junction with an energy bandgap of 1.6 -1.9 eV to a standard silicon solar cell enables efficiencies over 38%. Currently, top junctions of GaInP (1.8 eV) are the most promising as they can achieve 1-sun efficiencies of 20.8% [1]. We fabricated mechanically stacked, four terminal GaInP/Si tandem solar cells using a transparent adhesive between the subcells. These tandem devices achieved an efficiency of 27% under AM1.5 g spectral conditions. Furthermore, higher efficiencies can be achieved by using an improved Si-bottom cell and by optimizing the dual-junction device for long-wavelength light and luminescent coupling between the two junctions.
Research Organization:
NREL (National Renewable Energy Laboratory (NREL), Golden, CO (United States))
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy Solar Energy Technologies Office (EE-4S)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1225305
Report Number(s):
NREL/JA--5J00-64775
Journal Information:
Energy Procedia (Online), Journal Name: Energy Procedia (Online) Vol. 77; ISSN 1876-6102
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (11)

Zuverlässigkeit optoelektronischer Komponenten book January 2020
Analytical Modeling of Dual-Junction Tandem Solar Cells Based on an InGaP/GaAs Heterojunction Stacked on a Ge Substrate journal April 2019
Innovations in Urban Climate Governance: Voluntary Programs for Low-Carbon Buildings and Cities journal July 2017
Raising the one-sun conversion efficiency of III–V/Si solar cells to 32.8% for two junctions and 35.9% for three junctions journal August 2017
High-efficiency crystalline silicon solar cells: status and perspectives journal January 2016
Three-terminal III–V/Si tandem solar cells enabled by a transparent conductive adhesive journal January 2020
Highly efficient and durable III–V semiconductor-catalyst photocathodes via a transparent protection layer journal January 2020
Electroluminescent refrigeration by ultra-efficient GaAs light-emitting diodes journal May 2018
A review of recent progress in heterogeneous silicon tandem solar cells journal March 2018
Nanoscale electrical analyses of axial-junction GaAsP nanowires for solar cell applications journal January 2020
Review of Power Device for Solar-Powered Aircraft Applications journal October 2019

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