Organic solar cells (OSCs) have shown great promise as low‐cost photovoltaic devices for
solar energy conversion over the past decade. Interfacial engineering provides a powerful …

The development of efficient, reliable, and clean energy sources is one of the global
priorities for enabling a sustainable transition toward a green society and economy. The …

The power conversion efficiency of perovskite solar cells (PSCs) has ascended from 3.8% to
22.1% in recent years. ZnO has been well‐documented as an excellent electron‐transport …

For the inverted organic solar cells (OSCs), the interface contacts between the ZnO electron
transporting layer and the organic active layer play an important role in the device …

As the electron transport layer in quantum dot light‐emitting diodes (QLEDs), ZnO suffers
from excessive electrons that lead to luminescence quenching of the quantum dots (QDs) …

Polymer solar cell (PSC), also called organic photovoltaic solar cell (OPV), is an emerging
solar cell, benefitting from recent advances in nano-structured and functional energy …

Zinc oxide nanoparticle (ZnO-NP) thin films have been intensively used as electron transport
layers (ETLs) in organic optoelectronic devices, but their moderate mechanical flexibility …

Colloidal metal oxide nanocrystals offer a unique combination of excellent low-temperature
solution processability, rich and tuneable optoelectronic properties and intrinsic stability …

Large‐scale fabrication of organic solar cells requires an active layer with high thickness
tolerability and the use of environment‐friendly solvents. Thick films with high‐performance …

In this study, we employed polyethylenimine-doped sol–gel-processed zinc oxide
composites (ZnO: PEI) as efficient electron transport layers (ETL) for facilitating electron …