In the past few years, there have been impressive breakthroughs to enhance the structure of
organic solar cells (OSCs) in order to improve the performance. Resulting in increment of the …

Transient photovoltage (TPV) is a technique frequently used to determine charge carrier
lifetimes in thin-film solar cells such as organic, dye-sensitized, and perovskite solar cells. As …

Organic bulk‐heterojunction solar cells based on the newly developed nonfullerene electron
acceptors have the potential for very low‐cost energy production. However, to enable large …

Unintentional doping of the active layer is a source for lowered device performance in
organic solar cells. The effect of doping is to induce a space-charge region within the active …

To achieve efficient solar cells, an in-depth review on significance of diffusion length
enhancement is presented in this research work. We have focused on globally-adopted …

Surface recombination has a major impact on the open-circuit voltage (V OC) of organic
photovoltaics. Here, we study how this loss mechanism is influenced by imbalanced charge …

The Fermi-Dirac statistics is adopted to consider degenerate effects in organic diodes. The
degenerate drift-diffusion equation is analytically solved under the uniform-electrical-field …

The field of organic solar cells has recently gained broad research interest due to the
introduction of non-fullerene small-molecule acceptors. The rapid improvement in solar cell …

In this work, we measure the hole mobility in the model polymer system poly (3-
hexylthiophene-2, 5-diyl) by using different measurement techniques. Our main purpose is …

The steady-state charge-carrier mobility in semiconductors can be extracted from the space-
charge-limited current in single-carrier devices. However, in many cases, a built-in voltage is …