Photoexcitation of C60-WSe2 hybrids for optical sensing

Kishan Jayanand; Silvino P. Bastos; Anupama B. Kaul

doi:10.1117/12.2632594

3 October 2022 Photoexcitation of C₆₀-WSe₂ hybrids for optical sensing

Kishan Jayanand, Silvino P. Bastos, Anupama B. Kaul

Proceedings Volume 12200, Low-Dimensional Materials and Devices 2022; 1220006 (2022) https://doi.org/10.1117/12.2632594
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

Monolayers of transition metal dichalcogenides (TMDCs) have caught the interest of post-silicon electronics and optoelectronics researchers due to their exceptional electronic and optoelectronic properties which stem from their unique two-dimensional (2D) layered structure. In recent years, there has been a focus on exploring van der Waals (vdW) heterojunctions with TMDCs, including with lower dimensionality materials such as zero-dimensional (0D) systems. Integrating 0D-2D assemblies together provides an opportunity to configure a diverse array of material stacks towards optoelectronics and electronics applications. In this study, we synthesized 0D-2D vdW heterostructure by spin coating C₆₀ molecules on halide-assisted-low-pressure chemical-vapor-deposition (HA-LPCVD) produced monolayer WSe₂ flakes. Raman and photoluminescence spectroscopy allowed us to assess the charge carrier exchange at the vdW interface. We found that after C₆₀ deposition, the photodetector figures of merit for WSe₂ − C₆₀ hybrids improved, and investigations were conducted as a function of illumination power. Our studies reveal that WSe₂ − C₆₀ hybrid system is an appealing choice for next generation optical sensing devices.

Conference Presentation

Citation Download Citation

Kishan Jayanand, Silvino P. Bastos, and Anupama B. Kaul "Photoexcitation of C₆₀-WSe₂ hybrids for optical sensing", Proc. SPIE 12200, Low-Dimensional Materials and Devices 2022, 1220006 (3 October 2022); https://doi.org/10.1117/12.2632594

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