Dynamic Microscopy Study of Ultrafast Charge Transfer in a Hybrid P3HT/Hyperbranched CdSe Nanoparticle Blend for Photovoltaics Giulia Grancini Mariano Biasiucci Rosanna Mastria Francesco Scotognella Francesco Tassone Dario Polli Giuseppe Gigli Guglielmo Lanzani 10.1021/jz3000382.s001 https://acs.figshare.com/articles/journal_contribution/Dynamic_Microscopy_Study_of_Ultrafast_Charge_Transfer_in_a_Hybrid_P3HT_Hyperbranched_CdSe_Nanoparticle_Blend_for_Photovoltaics/2018352 We present a spectroscopic investigation on a new hyperbranched cadmium selenide nanocrystals (CdSe NC)/poly­(3-hexylthiophene) (P3HT) blend, a potentially good active component in hybrid photovoltaics. Combined ultrafast transient absorption spectroscopy and morphological investigations by means of an ultrafast confocal microscope reveal a strong influence of the complex local structure on the photogenerated carrier dynamics. In particular, we map the electron-transfer process across the hybrid NC/polymer interface, and we reveal that charge separation occurs through a preferential pathway from the CdSe nanobranches to the P3HT chains. Efficient charge generation at the distributed heterojunction is also confirmed by scanning kelvin probe force microscopy measurements. 2015-12-16 20:59:02 Hybrid P 3HT CdSe Nanoparticle P 3HT chains Ultrafast Charge Transfer absorption spectroscopy photogenerated carrier dynamics NC charge separation spectroscopic investigation P 3HT blend Dynamic Microscopy Study ultrafast confocal microscope Efficient charge generation scanning kelvin probe force microscopy measurements hyperbranched cadmium selenide nanocrystals CdSe nanobranches