The Role of Dynamic and Static Disorder for Charge-Transfer States in Organic Bulk Heterojunction Solar Cells
Clemens Göhler, Carsten Deibel
Abstract
Organic bulk heterojunction solar cells utilize the donor–acceptor approach to amplify the charge photogeneration via interfacial charge-transfer (CT) states. A detailed modeling of the CT energetics is required to understand the performance limitations of organic photovoltaic devices today. However, general questions regarding the CT state are still under dispute. In this Perspective, we want to focus on energetic CT disorder, which can be separated into dynamic and static broadening. Both contributions uniquely affect the solar cell properties, and we will highlight current research results regarding their dominance over the CT state energy.
Topics & Concepts
HeterojunctionOrganic solar cellPhotovoltaic systemCharge (physics)Dominance (genetics)AcceptorSolar cellMaterials scienceHybrid solar cellOptoelectronicsSolar energyPolymer solar cellNanotechnologyEngineering physicsChemical physicsChemistryPhysicsCondensed matter physicsEngineeringElectrical engineeringQuantum mechanicsBiochemistryGeneOrganic Electronics and PhotovoltaicsPerovskite Materials and ApplicationsThin-Film Transistor Technologies