Semiconductor nanocrystal represents an attractive alternative to various vacuum-based techniques for application in optoelectronic devices. Lead sulfide is used as colloidal quantum dots (CQDs) to benefit from their size tunability, stability, solution processability and high quantum yield luminescence. These properties allow more photon harvesting by matching the band gap to the solar spectrum, making it a versatile absorber material when applied in solar cell devices allow achievingpower-conversion efficiencies (PCEs) greater than 11%.The full potential of colloidal quantum dots is not fully harnessed yet. The thin film properties of the colloidal quantum dots are still limiting the performance of the device although it applies the optimum device engineering. Therefor it is important to overcome the exciting limit by understanding the thin film in more details. Since few people know about the technology, it is essential that we raise its profile.
Reference: 1. Philipp Stadler, Shaimaa A. Mohamed, et. al.Iodide-Capped PbS Quantum Dots: Full Optical Characterization of a Versatile Absorber, Adv. Mater. 2015, DOI: 10.1002/adma.201404921
© 2019 MTPR. All Rights Reserved