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Issue
Korean Journal of Chemical Engineering,
Vol.34, No.12, 3214-3219, 2017
Expanding depletion region via doping: Zn-doped Cu2O buffer layer in Cu2O photocathodes for photoelectrochemical water splitting
Lee KH, Lee CH, Cheong JY, Lee SK, Kim ID, Joh HI, Lee DC
We report photoelectrochemical hydrogen evolution reaction using a Cu2O-based photocathode with a layer doped with Zn ions. The doping results in the shift of the onset flat-band potential of the photocathode, likely a consequence of maximized band-bending in the Cu2O/Zn : Cu2O heterojunction. Systematic electrochemical analysis reveals that expansion of depletion region is responsible for the enhanced photoelectrochemical performance, e.g., the increase of photocurrent and reduced internal resistance.
Keywords: Cu2O; Zn-doped Cu2O; Photocathode; Water Splitting; Photoelectrochemistry
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[Cited By]
  1. Kim MS, Kim GM, Wang N, Lee DC, Korean Journal of Chemical Engineering, 38(7), 1308, 2021
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