Photo response of P3HT: PCBM/SWCNT bulk hetrojunction device

摘要

Here, we report the photoresponse of poly (3-hexylthiophene) (P3HT) and 1-(3-methoxycarbonyl) propyl-1-phenyl [6, 6] C61 (PCBM) bulk heterojunction organic devices. Schottky devices having the structure ITO/P3HT: PCBM/Al and ITO/P3HT: PCBM+SWCNT nanocomposites/Al have been fabricated. Prior to the fabrication of devices, Raman & Photoluminescence studies were performed to study the optical characteristics of polymer blend and nanocomposite; these studies confirm the formation of nanocomposite. I-V characteristics of the devices show a remarkable increase in the current upon light illumination. Further, charge transport analysis shows three different voltage dependent charge transport regions.