nanoGe - HOPV15 - Charge carrier dynamics in organic solar cells - the impact of morphology, energetics and charge transfer states

Charge carrier dynamics in organic solar cells - the impact of morphology, energetics and charge transfer states

James Durrant^a

^aImperial College London, United Kingdom, South Kensington, Londres, Reino Unido, United Kingdom

^bSPECIFIC, Swansea University, Baglan Bay Innovation and Knowledge Centre, Baglan, SA12 7AX, United Kingdom

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)

Roma, Italy, 2015 May 11th - 13th

Organizer: Filippo De Angelis

Invited Speaker, James Durrant, presentation 004
Publication date: 5th February 2015

My talk will focus on charge separation and recombination in organic solar cells and their impact upon device function. I will discuss how such studies elucidate materials function in such devices, and thereby lead to materials and device design guidelines which can aid technology development. The talk will be based around the use of transient optical and optoeletronic measurements of yields, lifetimes and densities of excitons and polarons in blend films and solar cells, and correlated with steady state optical and device efficiency measurements. I will discuss the energetics and kinetics of charge separation and recombination, and the importance of blend morphology in determining these processes. I will address the importance of material crystalliinity / aggregation in determining local material energetics, and the impact of both chemically pure and mixed domains on device function. My talk will particularly focus on the rather controversial topic of the role of charge transfer and bound polaron pairs in the processes of charge separation in bulk heterojunction solar cells.

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International Conference on Hybrid and Organic Photovoltaics

International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.

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The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.