Passivation Using Molecular Halides Increases Quantum Dot Solar Cell Performance. Issue 2 (18th November 2015) - Lan, Xinzheng
Abstract : A solution‐based passivation scheme is developed featuring the use of molecular iodine and PbS colloidal quantum dots (CQDs). The improved passivation translates into a longer carrier diffusion length in the solid film. This allows thicker solar‐cell devices to be built while preserving efficient charge collection, leading to a certified power conversion efficiency of 9.9%, which is a new record in CQD solar cells.