English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

An efficient synthesis of N-(2′,4′-bis(hexyloxy)-[1,1′-biphenyl]-4-yl)-N-(4-bromophenyl)-2′,4′-bis(hexyloxy)-[1,1′-biphenyl]-4-amine (BPTPA donor, 5) was developed based on a new 4-step synthetic route. The BPTPA donor is used to quickly access two new sensitizers: NT35 andG220, which both exhibit greater IPCE response with cobalt-based redox shuttles, compared to the classical iodide/triiodide electrolyte. A reference sensitizer, G221, comprising only a TPA unit as the donor and cyanoacrylic acid as the acceptor/anchor unit, was also realized for comparative purposes. The devices consisting of the sensitizers bearing the BPTPA donor and cobalt-based redox shuttles showed the highest Jsc, Voc and IPCE spectra response compared to G221. The BPTPA donor is shown to efficiently suppress the electron recombination between the TiO2 surface and the redox shuttle yielding high Voc values. Among these sensitizers, G220showed the best photovoltaic performance having a short-circuit photocurrent density (Jsc) of 14.8 mA cm−2, an open-circuit photovoltage (Voc) of 0.87 V, and a fill factor (FF) of 0.71, corresponding to an overall conversion efficiency of 9.06% under standard global AM 1.5 solar light conditions. These results demonstrate that organic sensitizers based on this bulky BPTPA donor are promising candidates for cobalt-based DSSCs

Facile synthesis of a bulky BPTPA donor group suitable for cobalt electrolyte based dye sensitized solar cells