Browse Items (16 total)

  • Tags: Conjugated Polymers

Organic solar cells: An overview focusing on active layer morphology

Solar cells constructed of organic materials are becoming increasingly efficient due to the discovery of the bulk heterojunction concept. This review provides an overview of organic solar cells. Topics covered include: a brief history of organic…

Role of Molecular Architecture in Organic Photovoltaic Cells

What are the stumbling blocks for achieving high-efficiency organic photovoltaic devices? This question is examined from a molecular architecture and Molecular packing perspective. The intermolecular interaction between the electron donor and…

Time- and Polarization-Resolved Photoluminescence of Individual Semicrystalline Polythiophene (P3HT) Nanoparticles

We report on a remarkable size and internal structure dependence on time- and polarization-resolved photoluminescence (PL) from individual regioregular rrP3HT (poly-3-(hexylthiophine)) nanoparticles. For the smallest particles (similar to 34 nm) with…

Polymer Nanoparticle Super lattices for Organic Photovoltaic Applications

In this Perspective, we discuss the possibility of constructing binary nanoparticle superlattices for organic photovoltaic applications and some of the interesting new photophysics emerging from preliminary studies. We summarize recent advances in…

Strategies for controlling the active layer morphologies in OPVs

This review focuses on the recent developments in our understanding of active layer morphologies for organic photovoltaic cells and approaches to obtain active layer morphologies for high power conversion efficiencies. The evolution of active layer…

Tuning Aggregation of Poly(3-hexylthiophene) within Nanoparticles

Nanoparticles derived from pi-conjugated polymers have gained widespread attention as active layer materials in various organic electronics applications. The optoelectronic, charge transfer, and charge transport properties of pi-conjugated polymers…

Fabrication conditions for efficient organic photovoltaic cells from aqueous dispersions of nanoparticles

For environmentally friendly and cost-effective manufacturing of organic photovoltaic (OPV) cells, it is highly desirable to replace haloarenes with water as the active layer fabrication solvent. Replacing an organic solvent with water requires…

Analysis of hole transport in thin films and nanoparticle assemblies of poly(3-hexylthiophene)

We report numerical simulation results on hole transport in layers of the organic polymer poly(3-hexylthiophene) (P3HT) of different nanostructures based on a deterministic, phenomenological drift diffusion-reaction model that accounts for hole…

Multiscale Active Layer Morphologies for Organic Photovoltaics Through Self-Assembly of Nanospheres

We address here the need for a general strategy to control molecular assembly over multiple length scales. Efficient organic photovoltaics require an active layer comprised of a mesoscale interconnected networks of nanoscale aggregates of…