Rear-Illuminated Perovskite Photorechargeable Lithium Battery

Ashim Gurung, Khan Mamun Reza, Sally Mabrouk, Behzad Bahrami, Rajesh Pathak, Buddhi Sagar Lamsal, Sheikh Ifatur Rahman, Nabin Ghimire, Raja Sekhar Bobba, Ke Chen, Jyotshna Pokharel, Abiral Baniya, Md Ashiqur Rahman Laskar, Mao Liang, Wenfeng Zhang, Wen Hua Zhang, Shangfeng Yang, Kang Xu, Qiquan Qiao

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


Photovoltaic power-conversion systems can harvest energy from sunlight almost perpetually whenever sunrays are accessible. Meanwhile, as indispensable energy storage units used in advanced technologies such as portable electronics, electric vehicles, and renewable/smart grids, batteries are energy-limited closed systems and require constant recharging. Fusing these two essential technologies into a single device would create a sustainable power source. Here, it is demonstrated that such an integrated device can be realized by fusing a rear-illuminated single-junction perovskite solar cell with Li4Ti5O12-LiCoO2 Li-ion batteries, whose photocharging is enabled by an electronic converter via voltage matching. This design facilitates a straightforward monolithic stacking of the battery on the solar cell using a common metal substrate, which provides a robust mechanical isolation between the two systems while simultaneously providing an efficient electrical interconnection. This system delivers a high overall photoelectric conversion-storage efficiency of 7.3%, outperforming previous efforts on stackable integrated architectures with organic–inorganic photovoltaics. Furthermore, converter electronics facilitates system control with battery management and maximum power point tracking, which are inevitable for efficient, safe, and reliable operation of practical loads. This work presents a significant advancement toward integrated photorechargeable energy storage systems as next-generation power sources.

Original languageEnglish (US)
Article number2001865
JournalAdvanced Functional Materials
Issue number30
StatePublished - Jul 1 2020
Externally publishedYes


  • battery charging
  • perovskite solar cells
  • photorechargeable
  • solar charging batteries
  • solar rechargeable

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Condensed Matter Physics
  • General Materials Science
  • Electrochemistry
  • Biomaterials


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