| Title |
Tailoring the Morphology of WS2 for Efficient Multidisciplinary Applications |
| Authors |
(Jin Kim) ; (Seungyoung Park) |
| DOI |
https://doi.org/10.3365/KJMM.2026.64.4.288 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
WS2; Photoelectrochemical; Gas sensor; Morphology; Chemical vapor deposition |
| Abstract |
Although the morphology of transition metal dichalcogenides (TMDs) can be engineered to
implement efficient sensing devices and energy conversion/storage systems, expanding the applicability of
TMDs across diverse fields using a limited range of TMD materials remains challenging. In particular,
research on strategies to optimize nanostructures incorporating vertical nanosheets to achieve efficient
multidisciplinary applications is necessary. Herein, we propose an efficient strategy to enhance and optimize
the multifunctional performance of WS2, including the performance of photoelectrochemical (PEC) cell and
gas sensing applications, through morphology control. WS2 vertical nanosheets were fabricated using a
controllable metal?organic chemical vapor deposition method, and their morphology could be effectively tuned
by adjusting the growth pressure. Comprehensive improvements in PEC performance and NO2 gas sensing
characteristics achieved through growth pressure modulation validated the dual functionality of the
morphology-controlled WS2 nanosheet structures. These results indicate that, irrespective of the application
field, efficient charge separation and the increased specific surface area provided by the nanosheet
architecture effectively enhance the performance of WS2. Furthermore, by controlling the nanosheet density
and thickness, we identify an optimal WS2 nanosheet structure with appropriate dimensions that enables
versatile multidisciplinary applications. This study suggests the importance of morphology control as a key
strategy for multifunctional applications and demonstrates a promising pathway to expand the applicability
of a limited range of WS2 across diverse fields through a simple and effective approach. |