Donor Materials

Photosensitive materials in the field of organic photovoltaics refer to a type of organic conjugated materials that can convert photon energy into electrical energy through the photovoltaic effect. When a photosensitive material absorbs photons from sunlight, it forms an excited state (electron-hole pair), also called excitons. The excitons in the photovoltaic device diffuse to the junction area and dissociate into free electrons and holes. Eventually, the charge is transferred to the anode (holes) and cathode (electrons) and generates direct current for the circuit.

Based on the combination of the excellent physical properties of small organic molecules or polymers (such as low density, processability, solubility, flexibility, etc.) with the photoelectric properties of semiconductors, organic photosensitive materials have attracted great interest from researchers. These characteristics make organic photosensitive materials a special category of unique and novel materials in large-area manufacturing of light and flexible organic photovoltaic devices through low-cost manufacturing technology.

Alfa Chemistry provides customers with a variety of photosensitive materials that can be used in various fields of OPV. These products have a wide range of applications, including but not limited to classic conjugated polymers, donor-acceptor conjugated polymers, OPV photosensitive small molecules and dye-sensitized solar cell materials. Among them, our receptor materials include Small Molecules and Polymers. Please contact us to learn more.