Boosting the photoelectrochemical performance of vertically aligned MoS2 nanosheets by Ag2S decoration

• Published in: Materials letters Vol. 326; p. 132914
• Main Authors: Bae, Sung-Su, Seo, Dong-Bum, Jayarathna, Roshani Awanthika, Lee, Sangyeob, Kim, Eui-Tae
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2022
• Subjects: 2D nanostructures; Heterostructures; Molybdenum disulfide; Photoelectrochemistry; Silver sulfide; Photoelectrochemistry; 2D nanostructures; Molybdenum disulfide; Silver sulfide; Heterostructures
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2022.132914

[Display omitted] •Enhanced photoelectrochemical reaction of 2D MoS2 nanosheets by Ag2S decoration.•Facile and controllable synthesis of 2D MoS2 nanosheets/Ag2S heterostructure.•Efficient heterojunction effects of 2D MoS2 nanosheets/Ag2S on photoelectrochemical applications. The effective heterojunction is a decisive factor in maximizing the photoelectrochemical (PEC) properties of two-dimensional (2D) MoS2. Herein, we demonstrated 2D MoS2 nanosheet/Ag2S as an efficient heterostructure for PEC applications. The MoS2 nanosheet/Ag2S heterostructures was fabricated in a controllable manner by metalorganic chemical vapor deposition of vertical 2D MoS2 nanosheets on indium tin oxide glass substrate, followed by Ag2S decoration. The 2D MoS2 nanosheet/Ag2S heterostructure showed significantly enhanced photocurrent compared with pristine MoS2 nanosheets, which was attributed to the efficient photo-generated carrier separation by the heterojunction effect and fast transfer of a carrier based on nanosheets. These results suggest one of the promising heterostructures of 2D MoS2 for various PEC applications.