Scientists at the National Renewable Energy Laboratory (NREL) are using an ionic salt to replace the fullerene layer in perovskite solar cells – boosting their performance, efficiency, and durability. Their findings appear in the journal Science.
The researchers say their findings point to a promising approach to advancing perovskite photovoltaic technologies toward commercialization. Perovskites refers to a crystalline structure that has proven highly efficient as a semiconductor material for absorbing sunlight. Work continues to improve the long-term stability of perovskite solar cells.
A senior scientist at NREL and architect of the research effort, Kai Zhu, said improvements involved changing the chemical composition of the electron transport layer in the perovskite solar cell. This layer is essential as it moves electrons triggered by sunlight through the cell, thereby generating electricity.
Read more: NREL-Led Research Effort Adds Salt, Boosts Performance of Perovskites | NREL