Approaching charge separation efficiency to unity without charge recombination

S Zhang, J Wang, S Wen, M Jiang, H Xiao, X Ding… - Physical Review Letters, 2021 - APS
Improving the efficiency of charge separation (CS) and charge transport (CT) is essential for
almost all optoelectronic applications, yet its maximization remains a big challenge. Here we …

Polarization Alignment in Polycrystalline BiFeO3 Photoelectrodes for Tunable Band Bending

X Li, Z Wang, W Ji, T Lu, J You, K Wang, G Liu, Y Liu… - ACS …, 2023 - ACS Publications
Polarization in a semiconductor can modulate the band bending via the depolarization
electric field (E dP), subsequently tuning the charge separation and transfer (CST) process …

Band-Gap Reduction in Superlattices: Designing Low-Band-Gap Ferroelectrics

S Zhang, HY Xiao, SM Peng, GX Yang, ZJ Liu, XT Zu… - Physical Review …, 2018 - APS
Ferroelectric Bi Fe O 3 is promising for photovoltaic applications, especially in regard to the
exploitation of ferroelectric photovoltaic effects for charge separation. However, its large …

Local Enhancement of Polarization at PbTiO3/BiFeO3 Interfaces Mediated by Charge Transfer

Y Liu, YL Zhu, YL Tang, YJ Wang, YX Jiang, YB Xu… - Nano Letters, 2017 - ACS Publications
Ferroelectrics hold promise for sensors, transducers, and telecommunications. With the
demand of electronic devices scaling down, they take the form of nanoscale films. However …

Light-Induced Currents at Domain Walls in Multiferroic BiFeO3

B Guzelturk, AB Mei, L Zhang, LZ Tan, P Donahue… - Nano …, 2019 - ACS Publications
Multiferroic BiFeO3 (BFO) films with spontaneously formed periodic stripe domains can
generate above-gap open circuit voltages under visible light illumination; nevertheless the …

Full-Space Potential Gradient Driven Charge Migration inside BiFeO3 Photocathode

B Tan, AM Reyes, E Menéndez-Proupin… - ACS Energy …, 2022 - ACS Publications
Solar–fuel conversion depends on effective collection of photocarriers in the photoelectrode.
In practice, however, considerable photocarriers are lost in the bulk through recombination …

Electron− hole separation in ferroelectric oxides for efficient photovoltaic responses

D Kim, H Han, JH Lee, JW Choi… - Proceedings of the …, 2018 - National Acad Sciences
Despite their potential to exceed the theoretical Shockley− Queisser limit, ferroelectric
photovoltaics (FPVs) have performed inefficiently due to their extremely low photocurrents …

Bulk Photovoltage Effect in Ferroelectric BaTiO3

Y Liu, X Wang, F Fan, C Li - The Journal of Physical Chemistry …, 2022 - ACS Publications
Due to the unusual charge separation mechanism and anomalous photovoltaic effects, the
bulk photovoltage effect in ferroelectric semiconductors has attracted a great deal of …

Internal‐Field‐Enhanced Charge Separation in a Single‐Domain Ferroelectric PbTiO3 Photocatalyst

Y Liu, S Ye, H Xie, J Zhu, Q Shi, N Ta… - Advanced …, 2020 - Wiley Online Library
Ferroelectric materials with spontaneous polarization‐induced internal electric fields have
drawn increasing attention in solar fuel production due to the intrinsic polarized structure …

[HTML][HTML] Shift current response in elemental two-dimensional ferroelectrics

Z Qian, J Zhou, H Wang, S Liu - npj Computational Materials, 2023 - nature.com
A bulk material without inversion symmetry can generate a direct current under illumination.
This interface-free current generation mechanism, referred to as the bulk photovoltaic effect …