On-chip energy storage integrated with solar cells using a laser scribed graphene oxide film

Significance Statement

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.


About the author

Professor Min Gu is a Laureate Fellow of the Australian Research Council as well as is Pro Vice- Chancellor (Research Capacity), Director of the Centre for Micro-Photonics and University Distinguished Professor at Swinburne University of Technology. He is a sole author of two standard reference books and has over 450 publications in nano/biophotonics. He is an elected Fellow of the Australian Academy of Science as well as the Australian Academy of technological Sciences and Engineering He is also an elected Fellow of the Australian Institute of Physics, the Optical Soceity of America, The International Society for Optical Engineering, The Instiute of Physics (UK) and The International Institute of Electric and Electronic Engineers. He was the President of the International Society of Optics within Life Sciences and Vice- President of the Bureau of the International Commission for Optics (ICO). He is a Director of the board of the Optical Society of America. He was awarded the Einstein Professorship (Chinese Academy of Science, 2010) and the W. H. Beattie Steel Medal of the Australian Optical Society (2011). He was the Finalist of the Australian Innovation Challenge Competition in 2013 and the recipient of the 2014 Ian Wark Medal, 2015 Baos medal (Australian Institute of Physics) and KCA research commercializing award.

About the author

Lead author of the paper, Litty Varghese Thekkekara received her M.Sc in Photonics and Bio-Photonics from University of Madras, Chennai, India. Currently, she is pursuing her PhD in Photonics at Centre for Micro-Photonics in Swinburne University of Technology, Australia. Her research topic is “High performance energy storage integrated silicon solar cells” under the supervision of Prof. Min Gu. 

About the author

Baohua Jia is an Associate Professor and Research Leader at Swinburne University of Technology. She uses light to develop various functional nanostructures to effectively harness and store clean energy from sunlight. She was awarded a PhD (2007) in optics from Swinburne University of Technology. She is the Honorary Treasurer of Australian Optical Society. She has co-authored more than 200 scientific publications and secured almost $2m research grants as a key CI in the past 7 years. Her recent awards include the Young Tall Poppy Science Award (2013), L’Oréal Australia and New Zealand for Women in Science Fellowship (2012), Discovery Early Career Researcher Award (DECRA) (2012), Victoria Fellowship (2010) and Australian Postdoctoral Fellowship (2009) et al 

About the author

Dr. Dan Li is currently a professor of Materials Science and Engineering at Monash University, Australia. He received his PhD degree in Materials Physics and Chemistry from University of Electronic Science and Technology of China in 1999. After several years as a Research Fellow at Nanjing University of Science and Technology, University of Washington, University of California Los Angles, and University of Wollongong, he joined Monash University as an associate professor in 2008 and was promoted to full professor in 2012. He received the ARC Queen Elizabeth II Fellowship in 2006, the Scopus Young Researcher of the Year Award (Engineering and Technology) in 2010, ARC Future Fellowship in 2011, Dean’s Award for Excellence in Research in 2012. He was named in the list of Thomson Reuters’ Highly Cited Researchers in the category of Materials Science in 2014-15. His current research interests are centred on synthesis and properties of graphene-based soft materials and their applications in energy storage and conversion, membrane separation, sensing, bionics and environmental protection. He is also very interested in developing new techniques to understand the ion/thermal transport phenomena in nanostructured porous materials.  

About the author

Dr. Yinan Zhang obtained his doctoral degree from Swinburne University of Technology, Australia in 2014 on plasmonic light trapping on Si-based solar cells. Currently, he is a postdoctoral research fellow working on thermal management of plasmonic Silicon thin film solar cells. His research expertise and interests are photovoltaics, plasmonics and nanofabrication etc. 

About the author

Dr. Ling Qiu received a Ph.D. in Materials Science and Engineering from Monash University, Australia in 2015. Currently, he is a postdoctoral research fellow working on graphene-based elastic aerogels and their applications in structural materials and flexible electrons.   

Journal Reference

Appl. Phys. Lett. 107, 031105 (2015)

Litty V. Thekkekara1, Baohua Jia1, Yinan Zhang1, Ling Qiu2, Dan Li2 , Min Gu1

Show Affiliations
  1. Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
  2. 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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On-chip energy storage integrated with solar cells using a laser scribed graphene oxide film- renewable energy global innovations



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