Open-circuit voltage (VOC) is the maximum voltage a solar cell can provide to an external
circuit, which is derived from the splitting of hole and electron quasi-Fermi levels. In …

The performance of semiconducting polymers has been steadily increasing in the last 20
years. Improved control over the microstructure of these materials and a deeper …

Perovskite-based solar cells have attracted significant recent interest, with power conversion
efficiencies in excess of 15% already superceding a number of established thin-film solar …

Organic solar cells lag behind their inorganic counterparts in efficiency due largely to low
open‐circuit voltages (Voc). In this work, a comprehensive framework for understanding and …

Charge transfer complexes are interfacial charge pairs residing at the donor–acceptor
heterointerface in organic solar cell. Experimental evidence shows that it is crucial for the …

Inorganic thin-film photovoltaics is a very old research topic with a scientific record of more
than 30 years and tens of thousands of published papers. At the same time, thin-film …

This chapter starts with a description of the characteristic electronic structure and charge
transport properties of organic semiconductors. These introductory parts are followed by …

A consensus is emerging that mixed phases are present in bulk heterojunction organic
photovoltaic (OPV) devices. Significant insights into the mixed phases have come from …

Experimental and theoretical studies of the electronic structure of bulk heterojunction (BHJ)
organic solar cells are reported. The photoconductivity spectral response of the solar cells …

It has recently been shown that surface energy effects can cause selective segregation at
the active layer interfaces of a bulk heterojunction (BHJ) organic photovoltaic device. The …