Document Type
Article
Publication Date
12-2024
Keywords
graphene; photolithography; wet etching; metalization; graphene transfer; Schottky junction; battery; low power
Abstract
High electrical conductivity and optical transparency make graphene a suitable candidate for photovoltaic-based power systems. In this study, we present the design and fabrication of an array of graphene-based Schottky junction solar cells. Using mainstream semiconductor manufacturing methods, we produced 96 solar cells from a single 100 mm diameter silicon wafer that was precoated with an oxide layer. The fabrication process involves removing the oxide layer over a select region, depositing metal contacts on both the oxide and bare silicon regions, and transferring large-area graphene onto the exposed silicon to create the photovoltaic interface. A single solar cell can provide up to 160 μA of short-circuit current and up to 0.42 V of open-circuit voltage. A series of solar cells are wired to recharge a 3 V battery intermittently, while the battery continuously powers a device. The solar cells and rechargeable battery together form a power system for any 3-volt low-power application.
Citation
Rahman, S. M., Kabir, M. R., Amin, T. B., Mangum, J. M., Ashaduzzaman., & Thibado, P. M. (2024). Array of Graphene Solar Cells on 100 mm Silicon Wafers for Power Systems. Energies, 17 (23), 5895. https://doi.org/10.3390/en17235895
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
