Organic solar cells

The Role of Device Mobility on the Charge Generation Process in Polymerized Small-Molecule Acceptor

This work highlights that to improve the JSC of current state-of-art OPV devices, the mobility of a device can be improved through material designs and device engineering for a higher charge generation efficiency.

Available from the Journal of Physical Chemistry C

An Alkylated Indacenodithieno[3,2-b ]thiophene-Based Nonfullerene Acceptor with High Crystallinity E

A new synthetic route to prepare an alkylated indacenodithieno[3,2-b]thiophene-based nonfullerene acceptor (C8-ITIC) is reported. This new acceptor, C8-ITIC, exhibits a reduction in the optical band gap, higher absorptivity, and an increased propensity to crystallize.

Available from Advanced Materials (open access)

The role of fullerenes in the environmental stability of polymer:fullerene solar cells

Here we quantitatively study the role of the common fullerene derivative, PCBM, in limiting the stability of benchmark organic solar cells, showing that a minor fraction (<1%) of photo-oxidised PCBM, induced by short exposure to either solar or ambient laboratory lighting conditions in air, is sufficient to compromise device performance severely.

Available from Energy & Environmental Science

Reducing the efficiency–stability–cost gap of organic photovoltaics with highly efficient and stable

Here we demonstrate highly efficient and stable solar cells using a ternary approach, wherein two non-fullerene acceptors are combined with both a scalable and affordable donor polymer, P3HT, and a high-efficiency, low-band gap polymer in a single-layer bulk-heterojunction device.

Available from Nature Materials

A Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics

A novel small molecule, FBR, bearing 3-ethylrhodanine flanking groups was synthesized as a nonfullerene electron acceptor for solution-processed bulk heterojunction organic photovoltaics.