Large response of a hybrid inorganic-polymer photodetector

摘要

Hybrid inorganic-polymer p-n junction device structures are fabricated using chemical bath deposited cadmium sulphide nanoparticles as inorganic photosensitive n-type materials and poly (9-vinyl carbazole) as a hole conducting polymer. This device displays rectifying ratio as large as 11. The photoresponsivity increases with the reverse bias voltage and its value is found to be typically 1.2 AW/sup -1/ at the reverse bias of 2 V.