Results 151 to 160 of about 110,157 (321)

Investigation the behavior of different fullerenes on graphene surface

open access: yesScientific Reports
In the present study, the regime of motion of fullerene molecules on graphene substrate in a specific temperature range is investigated. The potential energy of fullerene molecules is analyzed using classical molecular dynamics methods.
Mohammad Ali Bakhtiari   +7 more
doaj   +1 more source

Determining Exciton Diffusion Length in Organic Semiconductors: Unifying Macro‐ and Microscopic Perspectives

open access: yesAdvanced Energy Materials, EarlyView.
Exciton diffusion length in organic semiconductor films is determined from encounter/annihilation rates. Non‐normalized exciton densities and proper intrinsic lifetime reference avoid over‐parametrization of the fits. Monte Carlo Simulation of individual molecule‐to‐molecule hops reproduce these results (②) when matching lattice constant and hoping ...
Wenchao Yang   +12 more
wiley   +1 more source

Theoretical studies of fullerene annealing and fragmentation

open access: bronze, 1994
Robert L. Murry   +2 more
openalex   +1 more source

Discerning Blend Microstructure and Charge Recombination for Stable Biorenewable‐Based Organic Photovoltaics

open access: yesAdvanced Energy Materials, EarlyView.
A combination of morphological, electrical, and spectroscopy techniques is used to evaluate the degradation mechanisms of non‐fullerene (NFA)‐based organic photovoltaics (OPVs). Blends based on Y12 are more stable than Y6, aspeciallyOPVs from FO6‐T:Y12 demonstrated superior stability with an extrapolated T80 of over 2000 hours under maximum power point 
Eva Mazzolini   +14 more
wiley   +1 more source

Transport Resistance Dominates the Fill Factor Losses in Record Organic Solar Cells

open access: yesAdvanced Energy Materials, EarlyView.
Organic photovoltaics are a promising solar cell technology, but even the record devices with 20% efficiency have significant fill factor losses due to low active layer conductivities. In this Perspective, the authors describe the origin of these losses, discuss experimental methods for their quantification, and explain how to minimize them to optimize
Chen Wang   +6 more
wiley   +1 more source

Solvent Engineering for Scalable and Sustainable Fabrication of Lead‐tin Perovskite Solar Cells

open access: yesAdvanced Energy Materials, EarlyView.
Scaling up Pb‐Sn PSCs from the laboratory to an industrial scale requires addressing challenges related to scalable preparation technologies and solvent sustainability. This work introduces two innovative, low‐toxic solvent mixtures for a two‐step blade‐coating deposition process of the active perovskite layer, resulting in efficient and stable Pb‐Sn ...
Lijun Chen   +7 more
wiley   +1 more source

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