Untapped Potentials of Inorganic Metal Halide Perovskite Solar Cells

By A. Ho-baillie, Meng Zhang, C. Lau, Fa‐Jun Ma, Shujuan Huang. Joule, 2019

205 citations recorded by the source corpus.

Summary While the rate of improvement for organic lead halide perovskite solar cells is slowing, there has been a dramatic increase in cell efficiencies and in the number of cell demonstrations for inorganic cesium lead halide perovskite (e.g., CsPbIXBr3-X) solar cells in the last 2 years. The higher band gap and thermal stability of CsPbIXBr3-X are desirable for tandem solar cell applications and other optoelectronic devices. It is apparent that these cells are performing well optically, with some reaching 90% of their theoretical current output limits. However, low carrier lifetime and high surface recombination limit the voltages and fill factors of these cells, limiting their performance to only 60% of their theoretical efficiency limits. Appropriate transport layer designs (producing positive band offsets), reducing surface recombination velocities (to 103 cm/s), and improving lifetimes (10 μs) are effective strategies for improving efficiencies, allowing cells with thick absorbers to be fabricated, and achieving efficiencies above 80% of their theoretical limits.

Subfields: Electrical and Electronic Engineering, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/6b86f15be1ad765dc566bf7258a014344cd863a6