4 research outputs found
Enhanced Photodynamic of Carriers and Suppressed Charge Recombination Enable Approaching 18% Efficiency in Nonfullerene Organic Solar Cells
Regulation of the exciton generation, diffusion, and
carrier transport,
as well as optimization of the non-radiative energy loss could further
overcome the power conversion efficiency limitation of organic solar
cells. However, the relationship between exciton properties and non-radiative
energy loss has seldom been investigated. Herein, taking D18-series
devices as the research model, the exciton diffusion length (LD) and hole transfer dynamics can be remarkably
improved by the variation of electron-withdrawing halogen and the
non-radiative energy loss simultaneously can be suppressed. By combining
the analysis results of hole transfer, exciton diffusion, charge separation,
and recombination, this work demonstrates that the photo-induced exciton
in the chlorinated polymer donor can diffuse to a longer distance
within the effective exciton lifetime, suppress the exciton recombination,
and enhance device performance. The results define the relationship
between the exciton behaviors and non-radiative energy loss and further
reveal the significance of controlling the bulk heterojunction with
superior photo-physical properties
Enhancing the Thermal Stability of Organic Field-Effect Transistors by Electrostatically Interlocked 2D Molecular Packing
Enhancing the Thermal Stability of Organic Field-Effect
Transistors by Electrostatically Interlocked 2D Molecular Packin
Enhancing the Thermal Stability of Organic Field-Effect Transistors by Electrostatically Interlocked 2D Molecular Packing
Enhancing the Thermal Stability of Organic Field-Effect
Transistors by Electrostatically Interlocked 2D Molecular Packin
Enhancing the Thermal Stability of Organic Field-Effect Transistors by Electrostatically Interlocked 2D Molecular Packing
Enhancing the Thermal Stability of Organic Field-Effect
Transistors by Electrostatically Interlocked 2D Molecular Packin