☆ 4.1 Review

Exciton diffusion and dissociation in organic and quantum-dot solar cells

SMARTMAT (2023)

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Summary: This article discusses the surface chemistry engineering of metal halide perovskite quantum dots (PQDs) and emphasizes the dual impact of surface ligands on the stability and performance of PQDs, highlighting innovative solutions. Significant achievements in the fields of photovoltaics and optoelectronics have been made through a deep understanding of the surface atomistic structure and defect mechanisms in PQDs.

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Summary: This review provides an overview of the current understanding of entropy-driven charge separation in organic solar cells, focusing on the investigation of the entropy effect on exciton dissociation mechanism from both theoretical and experimental aspects. It explores factors such as the dimensionality of the organic semiconductor, energy disorder effect, morphology of the active layer, and the nonequilibrium effect, and discusses how they contribute to compensating the Coulomb dissociation barrier for charge transfer exciton separation and charge generation process. This review offers insights into the underlying mechanisms of exciton separation and provides pathways for enhancing the efficiency of organic solar cells.

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Investigation of Energy Transfer in Organic Photovoltaic Cells and Impact on Exciton Diffusion Length Measurements

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Observation of long-range exciton diffusion in highly ordered organic semiconductors

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Temperature dependence of exciton diffusion in conjugated polymers

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Effect of molecular packing on the exciton diffusion length in organic solar cells

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Long-range resonant energy transfer for enhanced exciton harvesting for organic solar cells

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Anisotropy of exciton migration in poly(p-phenylene vinylene)

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Accurate measurement of the exciton diffusion length in a conjugated polymer using a heterostructure with a side-chain cross-linked fullerene layer

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Contactless determination of the photoconductivity action spectrum, exciton diffusion length, and charge separation efficiency in polythiophene-sensitized TiO2 bilayers

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Charge-separation energy in films of π-conjugated organic molecules

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