Research co-led by CityU boosts efficiency of perovskite solar cells to record high
- CityU chemists develop a strategy for highly efficient and stable perovskite solar cells
- The first team to boost the efficiency of inverted perovskite solar cells to 25% and pass the stability test
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An international research team co-led by City University of Hong Kong (CityU) is accelerating the commercialisation of perovskite photovoltaic technology with a new approach that boosts the efficiency of inverted perovskite solar cells (PSCs) to a record high of 25%.
The team’s innovative approach involves applying a ferrocene-based organometallic compound called ferrocenyl-bis-thiophene-2-carboxylate (FcTc2) as the interfacial material to improve the efficiency and stability of inverted PSCs.
“We are the first team to boost the efficiency of inverted PSCs to 25% and pass the stability test set by the International Electrotechnical Commission,” said Dr Zhu Zonglong, Assistant Professor from the Department of Chemistry (CHEM).
The findings were published in the prestigious journal Science under the title “Organometallic-functionalised interfaces for highly efficient inverted perovskite solar cells”.
PSCs are a promising alternative to traditional silicon solar cells because of their low-cost, low-manufacturing temperature, and lightweight and flexible properties. They can be printed on plastic films as flexible solar cells or coated on window glass to absorb sunlight.
However, the operational lifetime of a device can be hampered by the chemically reactive components in perovskite materials that can become volatile and degrade under high temperatures and humidity.
