- Passivation Using Molecular Halides Increases Quantum Dot Solar Cell Performance.
Passivation Using Molecular Halides Increases Quantum Dot Solar Cell Performance.
Advanced materials (Deerfield Beach, Fla.) (2015-11-19)
Xinzheng Lan, Oleksandr Voznyy, Amirreza Kiani, F Pelayo García de Arquer, Abdullah Saud Abbas, Gi-Hwan Kim, Mengxia Liu, Zhenyu Yang, Grant Walters, Jixian Xu, Mingjian Yuan, Zhijun Ning, Fengjia Fan, Pongsakorn Kanjanaboos, Illan Kramer, David Zhitomirsky, Philip Lee, Alexander Perelgut, Sjoerd Hoogland, Edward H Sargent
PMID26576685
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.
MATERIALS
Product Number
Brand
Product Description
Sigma-Aldrich
PbS core-type quantum dots, oleic acid coated, fluorescence λem 1500 nm, 10 mg/mL in toluene
Sigma-Aldrich
PbS core-type quantum dots, oleic acid coated, fluorescence λem 1100 nm, 10 mg/mL in toluene
Sigma-Aldrich
PbS core-type quantum dots, oleic acid coated, fluorescence λem 900 nm, 10 mg/mL in toluene