skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Direct solar-to-hydrogen conversion via inverted metamorphic multi-junction semiconductor architectures

Journal Article · · Nature Energy

Solar water splitting via multi-junction semiconductor photoelectrochemical cells provides direct conversion of solar energy to stored chemical energy as hydrogen bonds. Economical hydrogen production demands high conversion efficiency to reduce balance-of-systems costs. For sufficient photovoltage, water-splitting efficiency is proportional to the device photocurrent, which can be tuned by judicious selection and integration of optimal semiconductor bandgaps. Here, we demonstrate highly efficient, immersed water-splitting electrodes enabled by inverted metamorphic epitaxy and a transparent graded buffer that allows the bandgap of each junction to be independently varied. Voltage losses at the electrolyte interface are reduced by 0.55 V over traditional, uniformly p-doped photocathodes by using a buried p-n junction. Lastly, advanced on-sun benchmarking, spectrally corrected and validated with incident photon-to-current efficiency, yields over 16% solar-to-hydrogen efficiency with GaInP/GaInAs tandem absorbers, representing a 60% improvement over the classical, high-efficiency tandem III-V device.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1348150
Report Number(s):
NREL/JA-5900-66837
Journal Information:
Nature Energy, Vol. 2, Issue 4; ISSN 2058-7546
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 241 works
Citation information provided by
Web of Science

References (37)

A taxonomy for solar fuels generators journal January 2015
Translation of device performance measurements to reference conditions journal September 1986
Life-cycle net energy assessment of large-scale hydrogen production via photoelectrochemical water splitting journal January 2014
Epitaxial Lift-Off for large area thin film III/V devices journal March 2005
Photoelectrochemical Cells journal February 1980
Scalability and feasibility of photoelectrochemical H 2 evolution: the ultimate limit of Pt nanoparticle as an HER catalyst journal January 2015
Solar-hydrogen: Environmentally safe fuel for the future journal April 2005
Pt–Ru Alloyed Fuel Cell Catalysts Sputtered from a Single Alloyed Target journal August 2011
Photo-electrochemical hydrogen generation from water using solar energy. Materials-related aspects journal October 2002
Artificial Photosynthesis: Solar Splitting of Water to Hydrogen and Oxygen journal March 1995
Solar-to-hydrogen efficiency: shining light on photoelectrochemical device performance journal January 2016
High-efficiency GaInP∕GaAs∕InGaAs triple-junction solar cells grown inverted with a metamorphic bottom junction journal July 2007
Photoelectrochemistry: Applications to Solar Energy Conversion journal October 1978
Metamorphic III–V Solar Cells: Recent Progress and Potential journal January 2016
An efficient photocathode for semiconductor liquid junction cells: 9.4% solar conversion efficiency with p-InP/VCl3-VCl2-HCl/C journal October 1980
High-efficiency thin-film InGaP/InGaAs/Ge tandem solar cells enabled by controlled spalling technology journal January 2012
Experimental demonstrations of spontaneous, solar-driven photoelectrochemical water splitting journal January 2015
Hydrogen-Evolving Solar Cells journal March 1984
Band parameters for III–V compound semiconductors and their alloys journal June 2001
A Monolithic Photovoltaic-Photoelectrochemical Device for Hydrogen Production via Water Splitting journal April 1998
Technical and economic feasibility of centralized facilities for solar hydrogen production via photocatalysis and photoelectrochemistry journal January 2013
Vegard’s law journal March 1991
An analysis of the optimal band gaps of light absorbers in integrated tandem photoelectrochemical water-splitting systems journal January 2013
Efficiency of Splitting Water with Semiconducting Photoelectrodes journal January 1984
Metamorphic epitaxy for multijunction solar cells journal March 2016
Reduction of crosshatch roughness and threading dislocation density in metamorphic GaInP buffers and GaInAs solar cells journal May 2012
Limiting and realizable efficiencies of solar photolysis of water journal August 1985
Remarkable stability of unmodified GaAs photocathodes during hydrogen evolution in acidic electrolyte journal January 2016
Photoelectrochemical Hydrogen Evolution Using Si Microwire Arrays
  • Boettcher, Shannon W.; Warren, Emily L.; Putnam, Morgan C.
  • Journal of the American Chemical Society, Vol. 133, Issue 5, p. 1216-1219 https://doi.org/10.1021/ja108801m
journal January 2011
Suppression of Band Edge Migration at the p-GaInP 2 /H 2 O Interface under Illumination via Catalysis journal July 2000
Sunlight absorption in water – efficiency and design implications for photoelectrochemical devices journal January 2014
Efficiency of solar water splitting using semiconductor electrodes journal November 2006
Arsenic Formation on GaAs during Etching in HF Solutions: Relevance for the Epitaxial Lift-Off Process journal December 2012
On the efficiency and stability of photoelectrochemical devices journal December 1984
Efficient direct solar-to-hydrogen conversion by in situ interface transformation of a tandem structure journal September 2015
Optical enhancement of the open-circuit voltage in high quality GaAs solar cells journal March 2013
Development of lattice-matched 1.7 eV GalnAsP solar cells grown on GaAs by MOVPE conference June 2016

Cited By (68)

Spinel Structural Disorder Influences Solar-Water-Splitting Performance of ZnFe 2 O 4 Nanorod Photoanodes journal July 2018
Plasmon‐Enhanced Photoelectrochemical Water Splitting for Efficient Renewable Energy Storage journal December 2018
Towards Solar Methanol: Past, Present, and Future journal February 2019
Organic Semiconductor Based Devices for Solar Water Splitting journal October 2018
Coating Polymeric Carbon Nitride Photoanodes on Conductive Y:ZnO Nanorod Arrays for Overall Water Splitting journal July 2018
Strategies for Plasmonic Hot-Electron-Driven Photoelectrochemical Water Splitting journal January 2018
Kinetic Competition between Water‐Splitting and Photocorrosion Reactions in Photoelectrochemical Devices journal November 2018
Engineering the Surface of a Polymeric Photocatalyst for Stable Solar‐to‐Chemical Fuel Conversion from Seawater journal June 2019
A Stand‐Alone Module for Solar‐Driven H 2 Production Coupled with Redox‐Mediated Sulfide Remediation journal August 2019
Scalable Core–Shell MoS 2 /Sb 2 Se 3 Nanorod Array Photocathodes for Enhanced Photoelectrochemical Water Splitting journal November 2019
A photochemical diode artificial photosynthesis system for unassisted high efficiency overall pure water splitting journal April 2018
High performance III-V photoelectrodes for solar water splitting via synergistically tailored structure and stoichiometry journal July 2019
An efficient and stable photoelectrochemical system with 9% solar-to-hydrogen conversion efficiency via InGaP/GaAs double junction journal November 2019
A thermally synergistic photo-electrochemical hydrogen generator operating under concentrated solar irradiation journal April 2019
Quantum dot activated indium gallium nitride on silicon as photoanode for solar hydrogen generation journal January 2019
Efficient solar-driven electrochemical CO 2 reduction to hydrocarbons and oxygenates journal January 2017
Vapor-fed solar hydrogen production exceeding 15% efficiency using earth abundant catalysts and anion exchange membrane journal January 2017
Production of solar chemicals: gaining selectivity with hybrid molecule/semiconductor assemblies journal January 2018
TiO 2 /TiN core/shell nanobelts for efficient solar hydrogen generation journal January 2018
Interaction of liquid water with the p-GaInP 2 (100) surface covered with submonolayer oxide journal January 2018
From CO 2 methanation to ambitious long-chain hydrocarbons: alternative fuels paving the path to sustainability journal January 2019
Single-crystal silicon-based electrodes for unbiased solar water splitting: current status and prospects journal January 2019
Toward practical solar hydrogen production – an artificial photosynthetic leaf-to-farm challenge journal January 2019
Thin film photoelectrodes for solar water splitting journal January 2019
Calculations of theoretical efficiencies for electrochemically-mediated tandem solar water splitting as a function of bandgap energies and redox shuttle potential journal January 2019
Unbiased solar H 2 production with current density up to 23 mA cm −2 by Swiss-cheese black Si coupled with wastewater bioanode journal January 2019
Advancing semiconductor–electrocatalyst systems: application of surface transformation films and nanosphere lithography journal January 2018
Stimulating bioplastic production with light energy by coupling Ralstonia eutropha with the photocatalyst graphitic carbon nitride journal January 2019
Membrane-less photoelectrochemical devices for H 2 O 2 production: efficiency limit and operational constraint journal January 2019
Computation and assessment of solar electrolyzer field performance: comparing coupling strategies journal January 2019
A bright outlook on organic photoelectrochemical cells for water splitting journal January 2018
Graphitic carbon nitride (g-C 3 N 4 ) electrodes for energy conversion and storage: a review on photoelectrochemical water splitting, solar cells and supercapacitors journal January 2018
Electronic structure of aqueous-phase anatase titanium dioxide nanoparticles probed by liquid jet photoelectron spectroscopy journal January 2019
Creating stable interfaces between reactive materials: titanium nitride protects photoabsorber–catalyst interface in water-splitting photocathodes journal January 2019
Ultrafast probes at the interfaces of solar energy conversion materials journal January 2019
The elusive photocatalytic water splitting reaction using sunlight on suspended nanoparticles: is there a way forward? journal January 2020
Black phosphorus quantum dots facilitate carrier separation for enhancing hydrogen production over hierarchical Cu 7 S 4 /ZnIn 2 S 4 composites journal January 2020
A series of silver doped butterfly-like Ti 8 Ag 2 clusters with two Ag ions panelled on a Ti 8 surface journal January 2019
Efficiency and stability of narrow-gap semiconductor-based photoelectrodes journal January 2019
Comment on “Unbiased solar H 2 production with current density up to 23 mA cm −2 by Swiss-cheese black Si coupled with wastewater bioanode” by L. Lu, W. Vakki, J. A. Aguiar, C. Xiao, K. Hurst, M. Fairchild, X. Chen, F. Yang, J. Gu and Z. J. Ren, Energy Environ. Sci. , 2019, 12 , 1088 journal January 2019
A highly [001]-textured Sb 2 Se 3 photocathode for efficient photoelectrochemical water reduction journal January 2019
A methodological review on material growth and synthesis of solar-driven water splitting photoelectrochemical cells journal January 2019
Solar hydrogen production: a bottom-up analysis of different photovoltaic–electrolysis pathways journal January 2019
Numerical Monte Carlo simulations of charge transport across the surface of dye and cocatalyst modified spherical nanoparticles under conditions of pulsed or continuous illumination journal January 2019
Elucidating charge separation in particulate photocatalysts using nearly intrinsic semiconductors with small asymmetric band bending journal January 2019
Photoelectrochemical water splitting using strain-balanced multiple quantum well photovoltaic cells journal January 2019
A perspective on practical solar to carbon monoxide production devices with economic evaluation journal January 2020
Practical challenges in the development of photoelectrochemical solar fuels production journal January 2020
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
High-efficiency inverted metamorphic 1.7/1.1 eV GaInAsP/GaInAs dual-junction solar cells journal January 2018
Surface chemistry and photoelectrochemistry—Case study on tantalum nitride journal October 2019
Single nanoparticle photoelectrochemistry: What is next? journal November 2019
Tandem photoelectrochemical cells for solar water splitting journal January 2018
A study of the strain distribution by scanning X-ray diffraction on GaP/Si for III–V monolithic integration on silicon journal July 2019
Nanostructured LaFeO 3 Photocathodes with Onset Potentials for the Hydrogen Evolution Reaction Over 1.4 V vs. RHE journal January 2019
Amorphous Cu 2-δ O as Passivation Layer for Ultra Long Stability of Copper Oxide Nanowires in Photoelectrochemical Environments journal January 2018
Editors' Choice—A Monolithic Photoelectrochemical Device Evolving Hydrogen in Pure Water journal January 2019
Tin and Oxygen-Vacancy Co-doping into Hematite Photoanode for Improved Photoelectrochemical Performances journal March 2020
Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses journal January 2020
Photoelectrochemical cells for solar hydrogen production: Challenges and opportunities journal August 2019
Recent Advances and Emerging Trends in Photo-Electrochemical Solar Energy Conversion text January 2019
Recent Advances and Emerging Trends in Photo-Electrochemical Solar Energy Conversion journal November 2018
Coating Polymeric Carbon Nitride Photoanodes on Conductive Y:ZnO Nanorod Arrays for Overall Water Splitting journal July 2018
Advancing semiconductor–electrocatalyst systems text January 2018
Efficient solar hydrogen generation in microgravity environment journal July 2018
One-Pot in Situ Hydrothermal Growth of BiVO4/Ag/rGO Hybrid Architectures for Solar Water Splitting and Environmental Remediation journal August 2017
Hybrid photosynthesis-powering biocatalysts with solar energy captured by inorganic devices journal October 2017