TY - JOUR
T1 - Dion-Jacobson Phase Perovskite Ca2Nan-3NbnO3 n+1-(n = 4-6) Nanosheets as High-κ Photovoltaic Electrode Materials in a Solar Water-Splitting Cell
AU - Aziza, Miladina R.
AU - Chang, Chia Wei
AU - Mohapatra, Anisha
AU - Chu, Chih Wei
AU - Kaun, Chao Cheng
AU - Su, Yen Hsun
N1 - Funding Information:
This work was supported, in part, by the Ministry of Science and Technology, Taiwan, under Grants MOST-108-2221-E-006-138, MOST-105-2221-E-006-206-MY3, MOST-108-2218-E-006-024, and MOST-108-2218-E-006-023, Precision Instruments Center in National Sun Yat-sen University (FEI EO Tecnai F20 G2 field-emission transmission electron microscope), and National Center for High-Performance Computing for computing time and facilities.
Publisher Copyright:
Copyright © 2020 American Chemical Society.
PY - 2020/7/24
Y1 - 2020/7/24
N2 - A well-crystalline two-dimensional (2D) perovskite material, Ca2Nan-3NbnO3n+1- (CNNO-) nanosheets, derived from the Dion-Jacobson phase has the potential to generate hydrogen through photoelectrochemical water splitting. Here, we demonstrate that a high-κ photovoltaic electrode consisting of CNNO- nanosheets with layer number n = 4-6 and a hole-transport polymer, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), can form a p-n junction and an overall solar-to-hydrogen water-splitting cell, with the highest efficiency of 0.52% and a hydrogen evolution rate of 80.64 μmol h-1. First-principles calculations are carried out to confirm the energy-band diagram of this promising material, which significantly affects the electronic transition process in a solar water-splitting cell. 2D CNNO- nanosheets present great potential for serving as nanoelectronic water-splitting devices in single transistors.
AB - A well-crystalline two-dimensional (2D) perovskite material, Ca2Nan-3NbnO3n+1- (CNNO-) nanosheets, derived from the Dion-Jacobson phase has the potential to generate hydrogen through photoelectrochemical water splitting. Here, we demonstrate that a high-κ photovoltaic electrode consisting of CNNO- nanosheets with layer number n = 4-6 and a hole-transport polymer, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), can form a p-n junction and an overall solar-to-hydrogen water-splitting cell, with the highest efficiency of 0.52% and a hydrogen evolution rate of 80.64 μmol h-1. First-principles calculations are carried out to confirm the energy-band diagram of this promising material, which significantly affects the electronic transition process in a solar water-splitting cell. 2D CNNO- nanosheets present great potential for serving as nanoelectronic water-splitting devices in single transistors.
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U2 - 10.1021/acsanm.0c00747
DO - 10.1021/acsanm.0c00747
M3 - Article
AN - SCOPUS:85091048634
SN - 2574-0970
VL - 3
SP - 6367
EP - 6375
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
IS - 7
ER -
