Strategy to utilize amorphous phase of semiconductor toward excellent and reliable photochemical water splitting performance: Roles of interface dipole moment and reaction parallelization

AbstractThe magnitude of the dipole moment at the Si-SiO2 interface resulting from partial charge transfer that takes place upon the formation of interface bonds has been calculated. The charge transfer occurs because of the difference in electronegativity between silicon atoms and SiO2 molecules which are present across the interface. Results obtained for (100) and (111) silicon substrates indicate that the magnitude of the interface dipole moment is dependent on substrate orientation and the interface chemistry. Dipole moments at the Si-SiO2 and gate-SiO2 interfaces should be included in the definition of the flatband voltage VFB of MOS structures. CV-based measurements of the metal-semiconductor workfunction difference φms on (100) and (111) silicon oxidized in dry oxygen and metallized with Al agree with the predictions of this model. Other types of interface dipoles and their processing dependence are briefly discussed.

Polymeric heptazine imide by O doping and constructing van der Waals heterostructures for photocatalytic water splitting: a theoretical perspective from transition dipole moment analyses

Physical Chemistry Chemical Physics ◽

10.1039/c9cp06092h ◽

2020 ◽

Vol 22 (18) ◽

pp. 9915-9922

Author(s):

Xirui Zhang ◽

Chao Yu ◽

Jintong Guan ◽

Shicheng Jiang ◽

Yunhui Wang ◽

...

Keyword(s):

Dipole Moment ◽

Optical Absorption ◽

Band Structure ◽

Water Splitting ◽

Theoretical Perspective ◽

Van Der Waals ◽

Transition Dipole Moment ◽

Van Der Waals Heterostructures ◽

Transition Dipole ◽

Photocatalytic Water Splitting

Transition dipole moment is suggested as a bridge between band structure and optical absorption in semiconductor photocatalysts and as referential descriptor for interlayer photoexcitation in layered heterostructures.

Advantageous crystalline–amorphous phase boundary for enhanced electrochemical water oxidation

Energy & Environmental Science ◽

10.1039/c9ee00950g ◽

2019 ◽

Vol 12 (8) ◽

pp. 2443-2454 ◽

Cited By ~ 58

Author(s):

HyukSu Han ◽

Heechae Choi ◽

Sungwook Mhin ◽

Yu-Rim Hong ◽

Kang Min Kim ◽

...

Keyword(s):

Phase Boundary ◽

Water Splitting ◽

Amorphous Phase ◽

Water Oxidation ◽

High Performance ◽

Cost Effective ◽

Effective Strategy

Crystalline–amorphous phase boundary engineering can be an effective strategy to develop cost-effective and high-performance electrocatalysts for water splitting.

Alcohol-soluble interfacial fluorenes for inverted polymer solar cells: sequence induced spatial conformation dipole moment

Physical Chemistry Chemical Physics ◽

10.1039/c5cp05589j ◽

2016 ◽

Vol 18 (3) ◽

pp. 2219-2229 ◽

Cited By ~ 6

Author(s):

Lie Chen ◽

Xiangfu Liu ◽

Yingkai Wei ◽

Feiyan Wu ◽

Yiwang Chen

Keyword(s):

Solar Cells ◽

Dipole Moment ◽

Small Molecule ◽

Polymer Solar Cells ◽

Polar Group ◽

Interface Dipole ◽

Inverted Polymer Solar Cells

The joint sequence of the polar group of small molecule electrolytes results in different conformations, which have an impact on the interface dipole moment.

Intrinsic defect engineered Janus MoSSe sheet as a promising photocatalyst for water splitting

RSC Advances ◽

10.1039/d0ra00119h ◽

2020 ◽

Vol 10 (18) ◽

pp. 10816-10825

Author(s):

Yimin Xu ◽

Yongsheng Yao ◽

Wenjin Yin ◽

Juexian Cao ◽

Mingyang Chen ◽

...

Keyword(s):

Dipole Moment ◽

Water Splitting ◽

Band Edge ◽

Intrinsic Defect ◽

Strong Candidate ◽

Intrinsic Dipole Moment ◽

Significant Attention ◽

Band Edge Position

The Janus MoSSe sheet has aroused significant attention due to its band edge position and intrinsic dipole moment, making it a strong candidate for water splitting photocatalysis.

Boronization‐Induced Ultrathin 2D Nanosheets with Abundant Crystalline–Amorphous Phase Boundary Supported on Nickel Foam toward Efficient Water Splitting

Advanced Energy Materials ◽

10.1002/aenm.201902714 ◽

2019 ◽

Vol 10 (3) ◽

pp. 1902714 ◽

Cited By ~ 26

Author(s):

Hongbin Xu ◽

Ben Fei ◽

Guanghui Cai ◽

Yuan Ha ◽

Jing Liu ◽

...

Keyword(s):

Phase Boundary ◽

Water Splitting ◽

Amorphous Phase ◽

Nickel Foam ◽

2D Nanosheets

Advances in Photoelectrochemical Water Splitting

10.1039/9781782629863 ◽

2018 ◽

Cited By ~ 2

Keyword(s):

Water Splitting ◽

Photoelectrochemical Water Splitting

10.1039/9781849737739 ◽

2013 ◽

Cited By ~ 39

Keyword(s):

Water Splitting ◽

Photoelectrochemical Water Splitting

Electrochemical and photoelectrochemical water splitting with a CoOx catalyst prepared by flame assisted deposition

Dalton Transactions ◽

10.1039/c9dt03983j ◽

2020 ◽

Vol 49 (3) ◽

pp. 588-592 ◽

Cited By ~ 1

Author(s):

Fusheng Li ◽

Ziqi Zhao ◽

Hao Yang ◽

Dinghua Zhou ◽

Yilong Zhao ◽

...

Keyword(s):

Cobalt Oxide ◽

Water Splitting ◽

Water Oxidation ◽

Oxide Catalyst ◽

Photoelectrochemical Water Splitting ◽

Deposition Method ◽

Photoelectrochemical Water Oxidation

A cobalt oxide catalyst prepared by a flame-assisted deposition method on the surface of FTO and hematite for electrochemical and photoelectrochemical water oxidation, respectively.

A novel ligand with –NH2 and –COOH-decorated Co/Fe-based oxide for an efficient overall water splitting: dual modulation roles of active sites and local electronic structure

Catalysis Science & Technology ◽

10.1039/d0cy01109f ◽

2020 ◽

Vol 10 (18) ◽

pp. 6266-6273

Author(s):

Yalan Zhang ◽

Zebin Yu ◽

Ronghua Jiang ◽

Jung Huang ◽

Yanping Hou ◽

...

Keyword(s):

Electronic Structure ◽

Water Splitting ◽

Energy Demand ◽

Active Sites ◽

Electrode Materials ◽

Global Energy ◽

Overall Water Splitting ◽

Local Electronic Structure ◽

Electrochemical Water Splitting

Excellent electrochemical water splitting with remarkable durability can provide a solution to satisfy the increasing global energy demand in which the electrode materials play an important role.