Abstract

CdS and CdS:Cu quantum dots are synthesized by chemical method using 3-mercaptopropionic acid (MPA) as capping material. The samples are then characterized using different structural and chemical characterization techniques which confirms nanoformation of the samples. The as-synthesized quantum dots are used to fabricate simple devices on glass substrate by depositing Aluminium (Al) electrodes on the active quantum dot layer with thermal evaporation technique. The current-voltage (I-V) relationship of the quantum dot devices are investigated under dark, room light and laser light (Red-638.2 nm) conditions and enhancement in photocurrent with increase in light intensity is observed for the devices.

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