Graphdiyne oxide-accelerated charge carrier transfer and separation at the interface for efficient binary organic solar cells

Interfacial engineering for the regulation of charge carrier dynamics in solar cells is a critical factor fabrication high-efficiency devices. Based on successful preparation highly dispersible graphdiyne oxide (GDYO) with large number functional groups, we fabricated organic employing GDYO-modified poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate) (PEDOT:PSS) as hole transport materials. Results show that π−π interaction between GDYO and PEDOT:PSS beneficial to formation an optimized transfer channel improves conductivity mobility layer. Moreover, improved interfacial contact contributes suppression recombination elevation extraction layer active More importantly, occurrence separation benefits from morphology layer, which efficiently performance, proven by results transient absorption measurements. Therefore, holistic management approach multiobjective optimization dynamics, photoelectric conversion efficiency 17.5% (with certified value 17.2%) obtained binary cells. All these indicate potential application functionalized field optoelectronic