Improving the Performance of Polymer Solar Cells with Benzo[]perylenetriimide-Based Small-Molecules as Interfacial Layers.

In this study, we prepared three benzo[]perylenetriimide (BPTI) conjugated molecules as electron-transporting surface-modifying layers for polymer solar cells (PSCs). These three BPTI derivatives differed in the nature of their terminal functionalities, featuring butylamine (CNH), propylammonium iodide (CNHI), and butyldimethylamine (CDMA) units, respectively. We evaluated the optoelectronic properties of PTB7-Th: PCBM blends modified with these interfacial layers, as well as the performance of resulting PSCs.

A Sensitive Visible Light Photodetector Using Cobalt-Doped Zinc Ferrite Oxide Thin Films.

In this study, a highly sensitive trilayer photodetector using Co-doped ZnFeO thin films annealed at 400 °C was synthesized successfully. Trilayer-photodetector devices with a film stack of 5 at % Co-doped-zinc-ferrite-thin-film/indium-tin-oxide on p-Si substrates were fabricated by radio-frequency sputtering. The absorbance spectra, photoluminescence spectra, transmission electron microscopy images, and - characteristics under various conditions were comprehensively investigated.