ACS Energy Letters · 2019 · 76 citations · 58 references
EngineeringOrganic ElectronicsOrganic Solar CellOrganic ChemistryChemistryPhotovoltaicsChemical EngineeringSolar Cell StructuresDegradation BehaviorSolvent AdditivesIn-operando StudyIv CharacteristicsPolymer ChemistryMaterials SciencePhotochemistryOrganic SemiconductorPhysical ChemistryOrganic Solar CellsPhotodegradationOrganic Material ChemistryConjugated PolymerSolar CellsSolar Cell Materials
Degradation of organic solar cells is among the fundamental problems that hinder their successful breakthrough. We probe in-operando the degradation behavior of organic solar cells based on the high-efficiency low-bandgap benzodithiophene copolymer PTB7-Th and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM). The influence of the solvent additives 1,8-diiodooctane and o-chlorobenzaldehyde on the degradation mechanism is studied with in situ grazing incidence small-angle X-ray scattering during operation. Changes in the IV characteristics are correlated for the first time in situ with changes in the morphology showing that the use of a solvent additive causes a change in device degradation.
58
Aggregation and morphology control enables multiple cases of high-efficiency polymer solar cells
Yuhang Liu, Jingbo Zhao, Zhengke Li et al. · Nature Communications · 2014 · 3.1K citations · Full text
Single-junction polymer solar cells with high efficiency and photovoltage
Zhicai He, Biao Xiao, Feng Liu et al. · Nature Photonics · 2015 · 1.7K citations