The resilience of perovskite under heat, has been questioned for this increasingly preferred solar sell component. There have been major research work going on at the global platform to bring its efficiency rate up. Australia National University (ANU) now has set a new efficiency record. Set at 21.6% for a single junction perovskite solar cell of one square centimeter, this breaks all other records and sets a new standard of efficiency.
There has been a conscious movement away from pure silicon solar cells towards perovskite, as it promises to be cost effective and comes with shorter payback times. With its ability to become the next big thing in solar energy, scientists are banking on it heavily. However, its one big issue is its survival in heat, oxygen, moisture, electric fields and light irradiation. It cannot withstand these conditions and becomes unstable under them. Which beats the very purpose of their use in solar cells.
But with increasing effort by research like at the ANU, perovskite is becoming stronger. ANU’s new record was earlier held by South Korea’s Ulsan National Institute of Science and Technology, which achieved 22.1% on a smaller perovskite cell in 2017 but topped out at 19.7% when scaled up to a square centimeter.
“When they’re very small it’s difficult to measure them accurately and it’s not necessarily representative of what would happen if you scaled up,” said ANU associate professor Thomas White. “So, our result is the highest on a scale that many consider the minimum: one square centimeter.”
The Commonwealth Scientific and Industrial Research Organization’s Photovoltaics Performance Laboratory has certified Australia National University’s efficiency record.