Perovskite Materials for solar cell application and beyond

Lianzhou Wang

Nanomaterials Centre, School of Chemical Engineering and AIBN, The University of Queensland

Abstract: Organic-inorganic hybrid perovskite materials have been demonstrated to be highly performed light absorbers for high efficient perovskite solar cells. Herein, we give some demonstrations on the development of lead-based or lead-free perovskite materials for not only solar cells, but also new applications including memory devices, integrated PV-Photoelectrochemical unassisted water splitting process, and PV-battery configuration. More specifically, 1) we found in organic-inorganic hybrid perovskite materials (CH3NH3PbI3-xClx) exhibited remarkable resistive switching behaviour with excellent endurance (>100 cycles), long retention time (>104 s) with a very small on-off voltage of < 1 V, which can be applicable in the resistive random access memory (RRAM) devices; 2). by dissolving organolead perovskites in organic solvents, a new type of in-situ solar conversion and energy storage system, so called solar battery, is also demonstrated; 3) the combination of a high performance photoelectrode BiVO4 with perovskite solar cells can lead to unassisted solar driven water splitting process with solar-to-hydrogen conversion efficiency of >6.5%; and 4). the integration of a perovskite solar cell with a newly developed Al-ion battery resulted in solar energy to energy storage efficiency of over 10%.1-5 All these examples demonstrated the versatile functionalities of perovskite materials in energy conversion and storage fields.

Biography: Lianzhou Wang is currently Professor and Australian Research Council (ARC) Future Fellow in School of Chemical Engineering, and Director of Nanomaterials Centre, the University of Queensland. Lianzhou’s research focuses on the design and application of functional nanomaterials for use in renewable energy conversion/storage systems, including photocatalytsts, low cost solar cells, and rechargeable batteries. In the last years, as a Chief Investigator, he has succeeded in winning a large number of competitive grants, including 19 ARC grants and >10 research projects from other agencies such as CSIRO, Queensland Government, Corporative Research Centre, and industry, totalling the funding of excess $22 million Australian dollars. Lianzhou has contributed 12 book/book chapters, >300 original journal publications, 11 patents and delivered over 80 plenary/keynote/invited presentations. He has won some prestigious Fellowships/awards including STA Fellowship of Japan, ARC Queen Elizabeth II Fellowship (2006), UQ Research Excellence Award of 2008, Scopus Young Researcher Award of 2011, ARC Future Fellowship of 2012, and is a member of ARC College of Experts for 2016-2018 and a Fellow of Royal Society of Chemistry.