Organic semiconductors with p-i-n structure for optoelectronic neurostimulation

An improved organic semiconductor structure has been developed by using bulk heterostructures, i.e., p-i-n junctions, for effective wireless stimulation of cells, including neurons. Measures of photovoltage generated in response to irradiation of structures with brief pulses of red light with a safe radiation intensity were studied. The effectiveness of organic p-i-n semiconductor structures was confirmed by photostimulation of a neuroblast cell line. The results obtained support the conclusion that p-i-n organic semiconductor device technology can provide an alternative to modern silicon semiconductors in the field of medicine combined with bioelectronics for neurostimulation.