Tunneling behaviors of photogenerated electrons in In{sub 0.15}Ga{sub 0.85}As/GaAs quantum well photoelectrodes
The photovoltaic spectral features and the behaviors of photocurrent versus the electrode potential for near surface In{sub 0.15}Ga{sub 0.85}As/GaAs quantum well electrodes have been investigated in nonaqueous solutions of ferrocene and acetylferrocene. The photovoltaic spectrum shows a sharp structure that reflects confined state-to-state exciton transition in the quantum well. Deep dips are observed in the photocurrent versus the electrode potential curves in both electrolytes at the different electrode potentials under the illumination of exciton resonance wavelength. These dips are qualitatively explained by considering the interfacial tunneling transfer of photogenerated electron within the quantum well.
- Research Organization:
- Chinese Academy of Sciences, Beijing (CN)
- OSTI ID:
- 20013647
- Journal Information:
- Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical, Journal Name: Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical Journal Issue: 47 Vol. 103; ISSN 1089-5647; ISSN JPCBFK
- Country of Publication:
- United States
- Language:
- English
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