The understanding and applications of organic semiconductors have shown remarkable
progress in recent years. This material class has been developed from being a lab curiosity …

The performance of solar cells based on molecular electronic materials is limited by
relatively low open-circuit voltage (V oc) relative to the absorption threshold. These voltage …

The fill factor (FF) is an important parameter that determines the power conversion efficiency
of an organic solar cell. There are several factors that can significantly influence FF, and …

Measuring the current-voltage characteristic of organic bulk heterojunction solar devices
sometimes reveals an S-shaped deformation. We qualitatively produce this behavior by a …

The authors present efficient all‐polymer solar cells comprising two different low‐bandgap
naphthalenediimide (NDI)‐based copolymers as acceptors and regioregular P3HT as the …

The effect of injection and extraction barriers on flat heterojunction (FHJ) and bulk
heterojunction (BHJ) organic solar cells is analyzed. The barriers are realized by a …

In this work, we assess the possible reasons for the differences observed in open circuit
voltage (VOC) in mixed cation perovskite solar cells when comparing four different hole …

Interface engineering is proved to be the most important strategy to push the device
performance of the perovskite solar cell (PSC) to its limit, and numerous works have been …

In this paper we focus on the current status of organic solar cells based on small molecules.
Since their discovery, much progress has been made, and the main steps are highlighted …

Inflection point behaviour is often observed in the current–voltage (IV) curve of polymer solar
cells. This phenomenon is examined in the context of flexible roll-to-roll (R2R) processed …