Poly (3, 4-ethylenedioxythiophene): poly (styrene sulfonate), PEDOT: PSS, has been widely
used as an effective hole transporting material in many different organic semiconductor …

It is clear that the current energy regimen, which relies on nonrenewable and polluting
energy sources, has unsustainable consequences for societal, economical, geopolitical, and …

Nickel oxide (NiOx) has garnered considerable attention as a prospective hole‐transporting
layer (HTL) in organic solar cells (OSCs), offering a potential solution to the stability …

Recently, organic solar cells (OSCs) have received rapid boosts in the power conversion
efficiency (PCE), due to progresses in materials and device engineering. Several groups …

During the last few years, transition metal oxides (TMO) such as molybdenum tri‐oxide
(MoO3), vanadium pent‐oxide (V2O5) or tungsten tri‐oxide (WO3) have been extensively …

Trap-assisted recombination caused by localised sub-gap states is one of the most
important first-order loss mechanism limiting the power-conversion efficiency of all solar …

Absorber thickness is one among keys parameters that can have significant effects on the
performance of the solar cell. An appropriate absorber thickness should be chosen to …

The detailed characterization of solution‐derived nickel (II) oxide (NiO) hole‐transporting
layer (HTL) films and their application in high efficiency organic photovoltaic (OPV) cells is …

In the early stage, Marks and co-workers [13] reported a striking performance improvement
of OSCs by replacing PEDOT: PSS with NiO x film using a pulsed-laser deposition …

Research on organic photovoltaic (OPV) materials and devices has flourished in recent
years due to their potential for offering low-cost solar energy conversion. With a deepened …