Next Article in Journal
Microalgae Cultivation for the Biotransformation of Birch Wood Hydrolysate and Dairy Effluent
Previous Article in Journal
Use of Zirconium Phosphate-Sulphate as Acid Catalyst for Synthesis of Glycerol-Based Fuel Additives
Previous Article in Special Issue
Ultrasonic-Assisted Synthesis of 2D α-Fe2O3@g-C3N4 Composite with Excellent Visible Light Photocatalytic Activity
Review

Metal Chalcogenides on Silicon Photocathodes for Efficient Water Splitting: A Mini Overview

Department of Energy Science, Sungkyunkwan University, Suwon 16419, Korea
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Catalysts 2019, 9(2), 149; https://doi.org/10.3390/catal9020149
Received: 29 November 2018 / Revised: 2 January 2019 / Accepted: 8 January 2019 / Published: 2 February 2019
(This article belongs to the Special Issue Semiconductor Catalysis)
In the photoelectrochemical (PEC) water splitting (WS) reactions, a photon is absorbed by a semiconductor, generating electron-hole pairs which are transferred across the semiconductor/electrolyte interface to reduce or oxidize water into oxygen or hydrogen. Catalytic junctions are commonly combined with semiconductor absorbers, providing electrochemically active sites for charge transfer across the interface and increasing the surface band bending to improve the PEC performance. In this review, we focus on transition metal (di)chalcogenide [TM(D)C] catalysts in conjunction with silicon photoelectrode as Earth-abundant materials systems. Surprisingly, there is a limited number of reports in Si/TM(D)C for PEC WS in the literature. We provide almost a complete survey on both layered TMDC and non-layered transition metal dichalcogenides (TMC) co-catalysts on Si photoelectrodes, mainly photocathodes. The mechanisms of the photovoltaic power conversion of silicon devices are summarized with emphasis on the exact role of catalysts. Diverse approaches to the improved PEC performance and the proposed synergetic functions of catalysts on the underlying Si are reviewed. Atomic layer deposition of TM(D)C materials as a new methodology for directly growing them and its implication for low-temperature growth on defect chemistry are featured. The multi-phase TM(D)C overlayers on Si and the operation principles are highlighted. Finally, challenges and directions regarding future research for achieving the theoretical PEC performance of Si-based photoelectrodes are provided. View Full-Text
Keywords: photoelectrochemical water splitting; silicon/chalcogenide junction; semiconductor photoelectrode; atomic layer deposition; multi-phase metal chalcogenides photoelectrochemical water splitting; silicon/chalcogenide junction; semiconductor photoelectrode; atomic layer deposition; multi-phase metal chalcogenides
Show Figures

Figure 1

MDPI and ACS Style

Joe, J.; Yang, H.; Bae, C.; Shin, H. Metal Chalcogenides on Silicon Photocathodes for Efficient Water Splitting: A Mini Overview. Catalysts 2019, 9, 149. https://doi.org/10.3390/catal9020149

AMA Style

Joe J, Yang H, Bae C, Shin H. Metal Chalcogenides on Silicon Photocathodes for Efficient Water Splitting: A Mini Overview. Catalysts. 2019; 9(2):149. https://doi.org/10.3390/catal9020149

Chicago/Turabian Style

Joe, Jemee, Hyunwoo Yang, Changdeuck Bae, and Hyunjung Shin. 2019. "Metal Chalcogenides on Silicon Photocathodes for Efficient Water Splitting: A Mini Overview" Catalysts 9, no. 2: 149. https://doi.org/10.3390/catal9020149

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop