We demonstrate that the inclusion of a small amount of the co-solvent 1,8-diiodooctane in the preparation of a bulk-heterojunction photovoltaic device increases its power conversion efficiency by 20%, through a mechanism of transient plasticisation. We follow the removal of 1,8-diiodooctane directly after spin-coating using ellipsometry and ion beam analysis, while using small angle neutron sca...

Organic photovoltaics (OPVs) are fabricated with blended active layers of poly [[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b]thiophenediyl]]: [6,6]-phenylC71-butyric acid methyl ester (PTB7:PC71BM). The active layers are prepared in chlorobenzene (CB) added different additives of 1, 8-Diiodooctane (DIO) and polystyrene (PS)...

We have developed new small-molecule electron donors, SMBDT-S and SMBDT-SF, based on benzo[1,2-b:4,5-b’]dithiophene (BDT) with thiophene side chains as a core unit rhodanine end-capping units to enhance the open-circuit voltage (Voc), which is one of factors limiting performance organic photovoltaics (OPVs). The SMBDT-SF donor molecules exhibited excellent thermal stability high crystallinity. ...

The light spectrometer is one of the most widely used optical instruments, allowing users to measure and analyze spectral components. However, reach a broad response range, spectrometers have combine silicon photodiode with an additional account for limited operating wavelength range each in isolation. Here, we developed organic photodiodes (OPDs) by combining novel narrow-bandgap non-fullerene...

Implantable biomedical electronics, such as pacemakers, drug pumps, cochlear implants, cardioverter-defibrillators, and neurological stimulators, help humans to overcome various diseases. Currently, the power supply for these devices relies on small-size batteries, replacement of battery is required after running a period time. Recharging could be way prolong cycle. Organic photovoltaics (OPVs)...