Invertis Journal of Renewable Energy
  • Year: 2014
  • Volume: 4
  • Issue: 4

H2 Generation from Cu2O Quantum Dots (QDs) Sensitized Cu/p-CuI Photoelectrode

  • Author:
  • R. D. A. A. Rajapaksha1, C. A. N. Fernando1,, S. N. T. De Silva2
  • Total Page Count: 5
  • Page Number: 208 to 212

1Nano-technology Research Laboratory, Department of Electronics, Faculty of Applied Sciences, Wayamba University of Sri Lanka, Kuliyapitiya, Sri Lanka

2Department of Biotechnology, Faculty of Agriculture & plantation management, Wayamba University of Sri Lanka, Makandura, Sri Lanka

*E-mail: nandanaf@phy.ruh.ac.lk

Online published on 10 August, 2015.

Abstract

p-CuI is sensitized with quantum dots (QDs) of Cu2O for the first time to fabricate photoelectrochemical cells. p-CuI thin films are deposited by immersing well cleaned copper sheets into a solution containing I2 (10–2M), KI (0.1M), CuSO4 (10–3M) to make Cu/p-CuI photoelectrodes. These photoelectrodes are boiled in a CuSO4 (10–2M) solution for different time intervals to obtain Cu/p-CuI/QD photoelectrodes. A remarkable H2 generation is observed in the presence of 0.025M Na2SO4 solution from the QDs sensitized photo-generated electrons at Cu/p-CuI/QDs photoelectrode. Different H2 profiles are reported as a function of the size of QDs.

Keywords

QDs, H2 generation, Cu/p-CuI/QDs photoelectrode