Impact of donor halogenation on reorganization energies and voltage losses in bulk-heterojunction solar cells
Hongbo Wu, Zaifei Ma, Mengyang Li, Hao Lu, Ailing Tang, Erjun Zhou, Jin Wen, Yanming Sun, Wolfgang Tress, Jógvan Magnus Haugaard Olsen, Simone Meloni, Zhishan Bo, Zheng Tang
Abstract
The introduction of halogen atoms in the donor molecules in organic solar cells leads to a decrease in the reorganization energy, which in turn results in reduced non-radiative voltage losses and an improved open-circuit voltage in the devices.
Topics & Concepts
HeterojunctionHalogenationVoltageMaterials scienceEngineering physicsOptoelectronicsPhysicsChemistryElectrical engineeringEngineeringOrganic chemistrySilicon and Solar Cell TechnologiesThin-Film Transistor TechnologiesOrganic Electronics and Photovoltaics