The lack of highly durable energy storage is one of the reason of hindrance to consider solar energy as the primary energy source. We fabricated on-chip laser scribed graphene oxide based energy storage (supercapacitors) integrated Silicon solar cells (Solar- Supercapacitors) which solved the bottle neck issues faced by the research community regarding additional space for energy storage, environmental pollution, durability of energy storage, scaling down the current energy storages for micro-electronics without performance degradation etc in general and particular for solar research. This research paves the way for solar powered flexible electronics and electric vehicles.
Litty V. Thekkekara1, Baohua Jia1, Yinan Zhang1, Ling Qiu2, Dan Li2 , Min Gu1Show Affiliations
- Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Department of Materials Engineering, Monash University, Clayton, Victoria 3800, Australia
We demonstrate an on-chip concept of the energy storage integrated with crystalline silicon solar cells using a laser scribed graphene oxide film, which can lead to the miniaturization in size and the minimization in cost of optoelectronic devices. The integrated solar supercapacitor with 62% columbic efficiency is directly written on the reverse side of solar cell without any loss in the solar cell performance. The energy and power density of the obtained energy storage devices are comparable to those of electrolytic capacitors even after a number of charging-discharging measurements.
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