From pv magazine International
Researchers from the Photo-electronic Hybrids Research Center at the Korea Institute of Science and Technology (KIST) have applied spin coating to the manufacture of large-area organic PV cells.
Low-cost spin coating applies a uniform film onto a solid surface using centrifugal force and a liquid-vapor interface. It is used in organic PV research during film formation to speed up solvent evaporation.
The researchers said spin coating enables bulk-heterojunction (BHJ) films for large-area organic cells which perform better and are more replicable than films produced without the process. “Commercially-available organic materials become easily crystallized, which makes them unsuitable for large-area solution processes,” the KIST group explained.
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