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

Title: Ultrathin Lutetium Oxide Film as an Epitaxial Hole-Blocking Layer for Crystalline Bismuth Vanadate Water Splitting Photoanodes

Journal Article · · Advanced Functional Materials

Abstract Here a novel ultrathin lutetium oxide (Lu 2 O 3 ) interlayer is integrated with crystalline bismuth vanadate (BiVO 4 ) thin film photoanodes to facilitate carrier transport through atomic‐scale interface control. The epitaxial Lu 2 O 3 interlayer fabricated by pulsed laser deposition features very few structural defects at the back contact of the heterojunction, and forms a unique band alignment that favors photohole blocking. An optimized interlayer thickness of 1.4 nm significantly enhances charge separation efficiency and photocurrent. Combined with photoelectrochemical characterization, solid‐state electronic, and localized conductive atomic force microscopy measurements, it is revealed that the Lu 2 O 3 interlayer modulates the electronic conduction pathways along structural grain boundaries and determines the overall device performance. This study sheds light on the nature of interface‐engineered carrier transport for efficient photoelectrode heterostructure design.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1425068
Alternate ID(s):
OSTI ID: 1416395
Report Number(s):
BNL-203208-2018-JAAM; TRN: US1802028
Journal Information:
Advanced Functional Materials, Vol. 28, Issue 10; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 36 works
Citation information provided by
Web of Science

References (38)

Nano-architecture and material designs for water splitting photoelectrodes journal January 2012
Domain epitaxy: A unified paradigm for thin film growth journal January 2003
Controlling Photoactivity in Ultrathin Hematite Films for Solar Water-Splitting journal March 2010
Raman spectroscopy of three polymorphs of BiVO4: clinobisvanite, dreyerite and pucherite, with comparisons to (VO4)3-bearing minerals: namibite, pottsite and schumacherite journal January 2006
Tailoring Multilayered BiVO 4 Photoanodes by Pulsed Laser Deposition for Water Splitting journal September 2015
Semiconductor-Based Photoelectrochemical Water Splitting at the Limit of Very Wide Depletion Region journal November 2015
A perspective on solar-driven water splitting with all-oxide hetero-nanostructures journal January 2011
Progress in bismuth vanadate photoanodes for use in solar water oxidation journal January 2013
Multifunctional, self-assembled oxide nanocomposite thin films and devices journal September 2015
Precise Determination of the Valence-Band Edge in X-Ray Photoemission Spectra: Application to Measurement of Semiconductor Interface Potentials journal June 1980
The influence of the film thickness of nanostructured α-Fe2O3 on water photooxidation journal January 2009
Advances in the growth and characterization of magnetic, ferroelectric, and multiferroic oxide thin films journal May 2010
Back Electron–Hole Recombination in Hematite Photoanodes for Water Splitting journal January 2014
Enhanced Stability and Activity for Water Oxidation in Alkaline Media with Bismuth Vanadate Photoelectrodes Modified with a Cobalt Oxide Catalytic Layer Produced by Atomic Layer Deposition journal November 2013
p-GaN/n-ZnO Heterojunction Nanowires: Optoelectronic Properties and the Role of Interface Polarity journal April 2014
Dominance of Plasmonic Resonant Energy Transfer over Direct Electron Transfer in Substantially Enhanced Water Oxidation Activity of BiVO 4 by Shape-Controlled Au Nanoparticles journal August 2017
Photocharged BiVO 4 photoanodes for improved solar water splitting journal January 2016
Photoelectrochemistry: Applications to Solar Energy Conversion journal October 1978
Ultrafast charge transfer in atomically thin MoS2/WS2 heterostructures journal August 2014
Surface Interrogation Scanning Electrochemical Microscopy (SI-SECM) of Photoelectrochemistry at a W/Mo-BiVO 4 Semiconductor Electrode: Quantification of Hydroxyl Radicals during Water Oxidation journal May 2013
Understanding the Role of Underlayers and Overlayers in Thin Film Hematite Photoanodes journal October 2014
Domain-wall conduction in ferroelectric BiFeO3 controlled by accumulation of charged defects journal November 2016
Crystal growth and structure of BiVO4 journal December 1979
Nanoporous BiVO4 Photoanodes with Dual-Layer Oxygen Evolution Catalysts for Solar Water Splitting journal February 2014
Atomic Insight into the W-Doping Effect on Carrier Dynamics and Photoelectrochemical Properties of BiVO 4 Photoanodes journal January 2016
A Ga 2 O 3 underlayer as an isomorphic template for ultrathin hematite films toward efficient photoelectrochemical water splitting journal January 2012
Effects of a SnO 2 hole blocking layer in a BiVO 4 -based photoanode on photoelectrocatalytic water oxidation journal January 2017
Solar Water Splitting Cells journal November 2010
Electronic Structure of Monoclinic BiVO 4 journal September 2014
Highly photoactive Ti-doped α-Fe 2 O 3 thin film electrodes: resurrection of the dead layer journal January 2013
Unravelling Photocarrier Dynamics beyond the Space Charge Region for Photoelectrochemical Water Splitting journal April 2017
High Light Absorption and Charge Separation Efficiency at Low Applied Voltage from Sb-Doped SnO 2 /BiVO 4 Core/Shell Nanorod-Array Photoanodes journal May 2016
Graphene-On-Silicon Schottky Junction Solar Cells journal April 2010
Conformally coated BiVO4 nanodots on porosity-controlled WO3 nanorods as highly efficient type II heterojunction photoanodes for water oxidation journal October 2016
Highly Improved Quantum Efficiencies for Thin Film BiVO 4 Photoanodes journal August 2011
Perovskite solar cells with a planar heterojunction structure prepared using room-temperature solution processing techniques journal December 2013
Facile fabrication of an efficient BiVO4 thin film electrode for water splitting under visible light irradiation journal June 2012
Prominent ferroelastic domain walls in BiVO 4 crystal journal September 1995

Cited By (11)

Target stoichiometry and growth temperature impact on properties of BiVO 4 (010) epitaxial thin films journal January 2018
Photoelectrochemical Device Designs toward Practical Solar Water Splitting: A Review on the Recent Progress of BiVO4 and BiFeO3 Photoanodes journal August 2018
The impact of crystal defects towards oxide semiconductor photoanode for photoelectrochemical water splitting journal October 2019
Elaborately Modified BiVO 4 Photoanodes for Solar Water Splitting journal December 2018
Recent Advances of Epitaxial BiVO4 Thin Film: Preparation and Physical and Photoelectrochemical Properties journal January 2020
BiVO 4 optimized to nano-worm morphology for enhanced activity towards photoelectrochemical water splitting journal January 2019
Atomic Layer Deposition of Space‐Efficient SnO 2 Underlayers for BiVO 4 Host–Guest Architectures for Photoassisted Water Splitting journal November 2018
The Role of Underlayers and Overlayers in Thin Film BiVO 4 Photoanodes for Solar Water Splitting journal May 2019
Enhanced photocatalytic activity and charge transfer of a TiO 2 /BiVO 4 nanostructured composite journal January 2019
Boosting the Performance of BiVO 4 Prepared through Alkaline Electrodeposition with an Amorphous Fe Co‐Catalyst journal September 2018
Atomic Layer Deposition of Space‐Efficient SnO 2 Underlayers for BiVO 4 Host–Guest Architectures for Photoassisted Water Splitting journal November 2018

Figures / Tables (6)


Similar Records

Heterostructured Bismuth Vanadate/Cobalt Phosphate Photoelectrodes Promote TEMPO-Mediated Oxidation of 5-Hydroxymethylfurfural
Journal Article · Fri May 31 00:00:00 EDT 2019 · ChemElectroChem · OSTI ID:1425068

Interstitial Lithium Doping in BiVO4 Thin Film Photoanode for Enhanced Solar Water Splitting Activity
Journal Article · Tue Jul 14 00:00:00 EDT 2020 · Chemistry of Materials · OSTI ID:1425068

Composition-Dependent Functionality of Copper Vanadate Photoanodes
Journal Article · Wed Feb 28 00:00:00 EST 2018 · ACS Applied Materials and Interfaces · OSTI ID:1425068

Related Subjects